Run wasm-opt on hqx module

2019-06-19 00:27:13 +01:00
81 changed files with 3367 additions and 2311 deletions
--- a/.nvmrc
+++ b/.nvmrc
@ -1 +1 @@
-10.16.2
+10.16.0
--- a/codecs/hqx/Dockerfile
+++ b/codecs/hqx/Dockerfile
@ -1,12 +1,23 @@
+FROM ubuntu
+RUN apt-get update && \
+  apt-get install -qqy git build-essential cmake python2.7
+RUN git clone --recursive https://github.com/WebAssembly/wabt /usr/src/wabt
+RUN mkdir -p /usr/src/wabt/build
+WORKDIR /usr/src/wabt/build
+RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
+  make && \
+  make install
+
 FROM rust
-RUN rustup target add wasm32-unknown-unknown
-RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+RUN rustup install nightly && \
+  rustup target add --toolchain nightly wasm32-unknown-unknown && \
+  cargo install wasm-pack
+
+COPY --from=0 /opt/wabt /opt/wabt

 RUN mkdir /opt/binaryen && \
- curl -L https://github.com/WebAssembly/binaryen/releases/download/1.38.32/binaryen-1.38.32-x86-linux.tar.gz  | tar -xzf - -C /opt/binaryen --strip 1
+  curl -L https://github.com/WebAssembly/binaryen/releases/download/1.38.32/binaryen-1.38.32-x86-linux.tar.gz  | tar -xzf - -C /opt/binaryen --strip 1

-RUN mkdir /opt/wabt && \
- curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
+ENV PATH="/opt/binaryen:/opt/wabt/bin:${PATH}"

-ENV PATH="/opt/binaryen:/opt/wabt:${PATH}"
 WORKDIR /src
--- a/codecs/hqx/build.sh
+++ b/codecs/hqx/build.sh
@ -6,11 +6,11 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  wasm-pack build
+  rustup run nightly \
+    wasm-pack build --target no-modules
+  mv pkg/squooshhqx_bg.wasm pkg/squooshhqx_bg.unopt.wasm
+  wasm-opt -Os --no-validation pkg/squooshhqx_bg.unopt.wasm -o pkg/squooshhqx_bg.wasm
  wasm-strip pkg/squooshhqx_bg.wasm
-  echo "Optimising Wasm so it doesn't break Chrome (this takes like 10-15mins. get a cup of tea)"
-  echo "Once https://crbug.com/974804 is fixed, we can remove this step"
-  wasm-opt -Os --no-validation -o pkg/squooshhqx_bg.wasm pkg/squooshhqx_bg.wasm
  rm pkg/.gitignore
 )
 echo "============================================="
--- a/codecs/hqx/index.html
+++ b/codecs/hqx/index.html
@ -0,0 +1,24 @@
+<!doctype html>
+<script src ="./pkg/squooshhqx.js"></script>
+<script type="module">
+  async function run() {
+    await wasm_bindgen("./pkg/squooshhqx_bg.wasm");
+    const bitmap = await createImageBitmap(await fetch("https://i.imgur.com/MNDnBSc.png").then(r => r.blob()));
+    const canvas = document.createElement("canvas");
+    canvas.width = bitmap.width;
+    canvas.height = bitmap.height;
+    const ctx = canvas.getContext("2d");
+    ctx.drawImage(bitmap, 0, 0);
+    const imgdata = ctx.getImageData(0, 0, bitmap.width, bitmap.height);
+    const factor = 4;
+    const r = wasm_bindgen.resize(new Uint32Array(imgdata.data.buffer), bitmap.width, bitmap.height, factor);
+
+    canvas.width = bitmap.width * factor;
+    canvas.height = bitmap.height * factor;
+    const output = new ImageData(new Uint8ClampedArray(r.buffer), canvas.width, canvas.height);
+    ctx.putImageData(output, 0, 0);
+    canvas.style = `width: ${canvas.width}px; height: ${canvas.height}px; image-rendering: pixelated;`;
+    document.body.append(canvas);
+  }
+  run();
+</script>
--- a/codecs/hqx/loading_benchmark.js
+++ b/codecs/hqx/loading_benchmark.js
@ -0,0 +1,11 @@
+// THIS IS NOT A NODE SCRIPT
+// This is a d8 script. Please install jsvu[1] and install v8.
+// Then run `npm run --silent benchmark`.
+// [1]: https://github.com/GoogleChromeLabs/jsvu
+
+async function init() {
+  const start = Date.now();
+  const module = await WebAssembly.compile(readbuffer("pkg/squooshhqx_bg.wasm"));
+  print(`${Date.now()/1000 - start/1000}`);
+}
+init().catch(e => console.error(e.stack));
--- a/codecs/hqx/pkg/package.json
+++ b/codecs/hqx/pkg/package.json
@ -9,7 +9,6 @@
    "squooshhqx.js",
    "squooshhqx.d.ts"
  ],
-  "module": "squooshhqx.js",
-  "types": "squooshhqx.d.ts",
-  "sideEffects": "false"
+  "browser": "squooshhqx.js",
+  "types": "squooshhqx.d.ts"
 }
--- a/codecs/hqx/pkg/squooshhqx.d.ts
+++ b/codecs/hqx/pkg/squooshhqx.d.ts
@ -7,3 +7,14 @@
 * @returns {Uint32Array} 
 */
 export function resize(input_image: Uint32Array, input_width: number, input_height: number, factor: number): Uint32Array;
+
+/**
+* If `module_or_path` is {RequestInfo}, makes a request and
+* for everything else, calls `WebAssembly.instantiate` directly.
+*
+* @param {RequestInfo | BufferSource | WebAssembly.Module} module_or_path
+*
+* @returns {Promise<any>}
+*/
+export default function init (module_or_path: RequestInfo | BufferSource | WebAssembly.Module): Promise<any>;
+        
--- a/codecs/hqx/pkg/squooshhqx.js
+++ b/codecs/hqx/pkg/squooshhqx.js
@ -1,46 +1,97 @@
-import * as wasm from './squooshhqx_bg.wasm';
+(function() {
+    const __exports = {};
+    let wasm;

-let cachegetUint32Memory = null;
-function getUint32Memory() {
-    if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
-        cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+    let cachegetUint32Memory = null;
+    function getUint32Memory() {
+        if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
+            cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+        }
+        return cachegetUint32Memory;
    }
-    return cachegetUint32Memory;
-}

-let WASM_VECTOR_LEN = 0;
+    let WASM_VECTOR_LEN = 0;

-function passArray32ToWasm(arg) {
-    const ptr = wasm.__wbindgen_malloc(arg.length * 4);
-    getUint32Memory().set(arg, ptr / 4);
-    WASM_VECTOR_LEN = arg.length;
-    return ptr;
-}
-
-let cachegetInt32Memory = null;
-function getInt32Memory() {
-    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
-        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    function passArray32ToWasm(arg) {
+        const ptr = wasm.__wbindgen_malloc(arg.length * 4);
+        getUint32Memory().set(arg, ptr / 4);
+        WASM_VECTOR_LEN = arg.length;
+        return ptr;
    }
-    return cachegetInt32Memory;
-}

-function getArrayU32FromWasm(ptr, len) {
-    return getUint32Memory().subarray(ptr / 4, ptr / 4 + len);
-}
-/**
-* @param {Uint32Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} factor
-* @returns {Uint32Array}
-*/
-export function resize(input_image, input_width, input_height, factor) {
-    const retptr = 8;
-    const ret = wasm.resize(retptr, passArray32ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, factor);
-    const memi32 = getInt32Memory();
-    const v0 = getArrayU32FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
-    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 4);
-    return v0;
-}
+    function getArrayU32FromWasm(ptr, len) {
+        return getUint32Memory().subarray(ptr / 4, ptr / 4 + len);
+    }

+    let cachedGlobalArgumentPtr = null;
+    function globalArgumentPtr() {
+        if (cachedGlobalArgumentPtr === null) {
+            cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
+        }
+        return cachedGlobalArgumentPtr;
+    }
+    /**
+    * @param {Uint32Array} input_image
+    * @param {number} input_width
+    * @param {number} input_height
+    * @param {number} factor
+    * @returns {Uint32Array}
+    */
+    __exports.resize = function(input_image, input_width, input_height, factor) {
+        const ptr0 = passArray32ToWasm(input_image);
+        const len0 = WASM_VECTOR_LEN;
+        const retptr = globalArgumentPtr();
+        wasm.resize(retptr, ptr0, len0, input_width, input_height, factor);
+        const mem = getUint32Memory();
+        const rustptr = mem[retptr / 4];
+        const rustlen = mem[retptr / 4 + 1];
+
+        const realRet = getArrayU32FromWasm(rustptr, rustlen).slice();
+        wasm.__wbindgen_free(rustptr, rustlen * 4);
+        return realRet;
+
+    };
+
+    function init(module) {
+
+        let result;
+        const imports = {};
+
+        if (module instanceof URL || typeof module === 'string' || module instanceof Request) {
+
+            const response = fetch(module);
+            if (typeof WebAssembly.instantiateStreaming === 'function') {
+                result = WebAssembly.instantiateStreaming(response, imports)
+                .catch(e => {
+                    console.warn("`WebAssembly.instantiateStreaming` failed. Assuming this is because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+                    return response
+                    .then(r => r.arrayBuffer())
+                    .then(bytes => WebAssembly.instantiate(bytes, imports));
+                });
+            } else {
+                result = response
+                .then(r => r.arrayBuffer())
+                .then(bytes => WebAssembly.instantiate(bytes, imports));
+            }
+        } else {
+
+            result = WebAssembly.instantiate(module, imports)
+            .then(result => {
+                if (result instanceof WebAssembly.Instance) {
+                    return { instance: result, module };
+                } else {
+                    return result;
+                }
+            });
+        }
+        return result.then(({instance, module}) => {
+            wasm = instance.exports;
+            init.__wbindgen_wasm_module = module;
+
+            return wasm;
+        });
+    }
+
+    self.wasm_bindgen = Object.assign(init, __exports);
+
+})();
--- a/codecs/hqx/pkg/squooshhqx_bg.d.ts
+++ b/codecs/hqx/pkg/squooshhqx_bg.d.ts
@ -1,5 +1,6 @@
 /* tslint:disable */
 export const memory: WebAssembly.Memory;
+export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
+export function __wbindgen_global_argument_ptr(): number;
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
-export function resize(a: number, b: number, c: number, d: number, e: number, f: number): void;
--- a/codecs/hqx/pkg/squooshhqx_bg.wasm
+++ b/codecs/hqx/pkg/squooshhqx_bg.wasm
--- a/codecs/imagequant/build.sh
+++ b/codecs/imagequant/build.sh
@ -11,9 +11,16 @@ echo "============================================="
 echo "Compiling libimagequant"
 echo "============================================="
 (
-  cd node_modules/libimagequant
-  emconfigure ./configure --disable-sse
-  emmake make static -j`nproc`
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MODULARIZE=1 \
+    -s 'EXPORT_NAME="imagequant"' \
+    -I node_modules/libimagequant \
+    --std=c99 \
+    -c \
+    node_modules/libimagequant/{libimagequant,pam,mediancut,blur,mempool,kmeans,nearest}.c
 )
 echo "============================================="
 echo "Compiling wasm module"
@ -22,16 +29,14 @@ echo "============================================="
  emcc \
    --bind \
    ${OPTIMIZE} \
-    --closure 1 \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
    -s 'EXPORT_NAME="imagequant"' \
    -I node_modules/libimagequant \
    -o ./imagequant.js \
-    --std=c++11 \
+    --std=c++11 *.o \
    -x c++ \
-    imagequant.cpp \
-    node_modules/libimagequant/libimagequant.a
+    imagequant.cpp
 )
 echo "============================================="
 echo "Compiling wasm module done"
@ -39,5 +44,5 @@ echo "============================================="

 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "Run \`docker pull trzeci/emscripten\`"
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/imagequant/imagequant.cpp
+++ b/codecs/imagequant/imagequant.cpp
@ -61,21 +61,21 @@ RawImage quantize(std::string rawimage, int image_width, int image_height, int n
 }

 const liq_color zx_colors[] = {
-  {.r = 0, .g = 0, .b = 0, .a = 255},       // regular black
-  {.r = 0, .g = 0, .b = 215, .a = 255},     // regular blue
-  {.r = 215, .g = 0, .b = 0, .a = 255},     // regular red
-  {.r = 215, .g = 0, .b = 215, .a = 255},   // regular magenta
-  {.r = 0, .g = 215, .b = 0, .a = 255},     // regular green
-  {.r = 0, .g = 215, .b = 215, .a = 255},   // regular cyan
-  {.r = 215, .g = 215, .b = 0, .a = 255},   // regular yellow
-  {.r = 215, .g = 215, .b = 215, .a = 255}, // regular white
-  {.r = 0, .g = 0, .b = 255, .a = 255},     // bright blue
-  {.r = 255, .g = 0, .b = 0, .a = 255},     // bright red
-  {.r = 255, .g = 0, .b = 255, .a = 255},   // bright magenta
-  {.r = 0, .g = 255, .b = 0, .a = 255},     // bright green
-  {.r = 0, .g = 255, .b = 255, .a = 255},   // bright cyan
-  {.r = 255, .g = 255, .b = 0, .a = 255},   // bright yellow
-  {.r = 255, .g = 255, .b = 255, .a = 255}  // bright white
+  {.a = 255, .r = 0, .g = 0, .b = 0},       // regular black
+  {.a = 255, .r = 0, .g = 0, .b = 215},     // regular blue
+  {.a = 255, .r = 215, .g = 0, .b = 0},     // regular red
+  {.a = 255, .r = 215, .g = 0, .b = 215},   // regular magenta
+  {.a = 255, .r = 0, .g = 215, .b = 0},     // regular green
+  {.a = 255, .r = 0, .g = 215, .b = 215},   // regular cyan
+  {.a = 255, .r = 215, .g = 215, .b = 0},   // regular yellow
+  {.a = 255, .r = 215, .g = 215, .b = 215}, // regular white
+  {.a = 255, .r = 0, .g = 0, .b = 255},     // bright blue
+  {.a = 255, .r = 255, .g = 0, .b = 0},     // bright red
+  {.a = 255, .r = 255, .g = 0, .b = 255},   // bright magenta
+  {.a = 255, .r = 0, .g = 255, .b = 0},     // bright green
+  {.a = 255, .r = 0, .g = 255, .b = 255},   // bright cyan
+  {.a = 255, .r = 255, .g = 255, .b = 0},   // bright yellow
+  {.a = 255, .r = 255, .g = 255, .b = 255}  // bright white
 };

 uint8_t block[8 * 8 * 4];
--- a/codecs/imagequant/imagequant.js
+++ b/codecs/imagequant/imagequant.js
--- a/codecs/imagequant/imagequant.wasm
+++ b/codecs/imagequant/imagequant.wasm
--- a/codecs/imagequant/package.json
+++ b/codecs/imagequant/package.json
@ -2,7 +2,7 @@
  "name": "imagequant",
  "scripts": {
    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
  },
  "napa": {
    "libimagequant": "ImageOptim/libimagequant#2.12.1"
--- a/codecs/mozjpeg_enc/build.sh
+++ b/codecs/mozjpeg_enc/build.sh
@ -17,7 +17,7 @@ echo "============================================="
  cd node_modules/mozjpeg
  autoreconf -fiv
  emconfigure ./configure --without-simd
-  emmake make libjpeg.la -j`nproc`
+  emmake make libjpeg.la
 )
 echo "============================================="
 echo "Compiling mozjpeg done"
@ -30,7 +30,6 @@ echo "============================================="
  emcc \
    --bind \
    ${OPTIMIZE} \
-    --closure 1 \
    -s WASM=1 \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
@ -50,5 +49,5 @@ echo "============================================="

 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "Run \`docker pull trzeci/emscripten\`"
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/mozjpeg_enc/mozjpeg_enc.js
+++ b/codecs/mozjpeg_enc/mozjpeg_enc.js
--- a/codecs/mozjpeg_enc/mozjpeg_enc.wasm
+++ b/codecs/mozjpeg_enc/mozjpeg_enc.wasm
--- a/codecs/mozjpeg_enc/package.json
+++ b/codecs/mozjpeg_enc/package.json
@ -2,7 +2,7 @@
  "name": "mozjpeg_enc",
  "scripts": {
    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
  },
  "napa": {
    "mozjpeg": "mozilla/mozjpeg#v3.3.1"
--- a/codecs/optipng/.gitignore
+++ b/codecs/optipng/.gitignore
@ -0,0 +1,2 @@
+build/
+*.o
--- a/codecs/optipng/README.md
+++ b/codecs/optipng/README.md
@ -0,0 +1,26 @@
+# OptiPNG
+
+- Source: <http://optipng.sourceforge.net/>
+- Version: v0.7.7
+
+## Dependencies
+
+- Docker
+
+## Example
+
+See `example.html`
+
+## API
+
+### `int version()`
+
+Returns the version of optipng as a number. va.b.c is encoded as 0x0a0b0c
+
+### `ArrayBuffer compress(std::string buffer, {level})`;
+
+`compress` will re-compress the given PNG image via `buffer`. `level` is a number between 0 and 7.
+
+### `void free_result()`
+
+Frees the result created by `compress()`.
--- a/codecs/optipng/build.sh
+++ b/codecs/optipng/build.sh
@ -0,0 +1,87 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export PREFIX="/src/build"
+export CFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
+export CPPFLAGS="${OPTIMIZE} -I${PREFIX}/include/"
+export LDFLAGS="${OPTIMIZE} -L${PREFIX}/lib/"
+
+apt-get update
+apt-get install -qqy autoconf libtool
+
+echo "============================================="
+echo "Compiling zlib"
+echo "============================================="
+test -n "$SKIP_ZLIB" || (
+  cd node_modules/zlib
+  emconfigure ./configure --prefix=${PREFIX}/
+  emmake make
+  emmake make install
+)
+echo "============================================="
+echo "Compiling zlib done"
+echo "============================================="
+
+echo "============================================="
+echo "Compiling libpng"
+echo "============================================="
+test -n "$SKIP_LIBPNG" || (
+  cd node_modules/libpng
+  autoreconf -i
+  emconfigure ./configure --with-zlib-prefix=${PREFIX}/ --prefix=${PREFIX}/
+  emmake make
+  emmake make install
+)
+echo "============================================="
+echo "Compiling libpng done"
+echo "============================================="
+
+echo "============================================="
+echo "Compiling optipng"
+echo "============================================="
+(
+  emcc \
+    ${OPTIMIZE} \
+    -Wno-implicit-function-declaration \
+    -I ${PREFIX}/include \
+    -I node_modules/optipng/src/opngreduc \
+    -I node_modules/optipng/src/pngxtern \
+    -I node_modules/optipng/src/cexcept \
+    -I node_modules/optipng/src/gifread \
+    -I node_modules/optipng/src/pnmio \
+    -I node_modules/optipng/src/minitiff \
+    --std=c99 -c \
+    node_modules/optipng/src/opngreduc/*.c \
+    node_modules/optipng/src/pngxtern/*.c \
+    node_modules/optipng/src/gifread/*.c \
+    node_modules/optipng/src/minitiff/*.c \
+    node_modules/optipng/src/pnmio/*.c \
+    node_modules/optipng/src/optipng/*.c
+
+  emcc \
+    --bind \
+    ${OPTIMIZE} \
+    -s ALLOW_MEMORY_GROWTH=1 -s MODULARIZE=1 -s 'EXPORT_NAME="optipng"' \
+    -I ${PREFIX}/include \
+    -I node_modules/optipng/src/opngreduc \
+    -I node_modules/optipng/src/pngxtern \
+    -I node_modules/optipng/src/cexcept \
+    -I node_modules/optipng/src/gifread \
+    -I node_modules/optipng/src/pnmio \
+    -I node_modules/optipng/src/minitiff \
+    -o "optipng.js" \
+    --std=c++11 \
+    optipng.cpp \
+    *.o \
+    ${PREFIX}/lib/libz.so ${PREFIX}/lib/libpng.a
+)
+echo "============================================="
+echo "Compiling optipng done"
+echo "============================================="
+
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "Did you update your docker image?"
+echo "Run \`docker pull trzeci/emscripten\`"
+echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/optipng/example.html
+++ b/codecs/optipng/example.html
@ -0,0 +1,19 @@
+<!doctype html>
+<script src='optipng.js'></script>
+<script>
+  const Module = optipng();
+
+  Module.onRuntimeInitialized = async _ => {
+    console.log('Version:', Module.version().toString(16));
+    const image = await fetch('../example_palette.png').then(r => r.arrayBuffer());
+    const newImage = Module.compress(image, {level: 3});
+    console.log('done');
+    Module.free_result();
+
+    console.log(`Old size: ${image.byteLength}, new size: ${newImage.byteLength} (${newImage.byteLength/image.byteLength*100}%)`);
+    const blobURL = URL.createObjectURL(new Blob([newImage], {type: 'image/png'}));
+    const img = document.createElement('img');
+    img.src = blobURL;
+    document.body.appendChild(img);
+  };
+</script>
--- a/codecs/optipng/optipng.cpp
+++ b/codecs/optipng/optipng.cpp
@ -0,0 +1,53 @@
+#include "emscripten/bind.h"
+#include "emscripten/val.h"
+
+#include <stdio.h>
+
+using namespace emscripten;
+
+extern "C" int main(int argc, char *argv[]);
+
+int version() {
+  // FIXME (@surma): Haven’t found a version in optipng :(
+  return 0;
+}
+
+struct OptiPngOpts {
+  int level;
+};
+
+uint8_t* result;
+val compress(std::string png, OptiPngOpts opts) {
+  remove("input.png");
+  remove("output.png");
+  FILE* infile = fopen("input.png", "wb");
+  fwrite(png.c_str(), png.length(), 1, infile);
+  fflush(infile);
+  fclose(infile);
+
+  char optlevel[8];
+  sprintf(&optlevel[0], "-o%d", opts.level);
+  char* args[] = {"optipng", optlevel, "-out", "output.png", "input.png"};
+  main(5, args);
+
+  FILE *outfile = fopen("output.png", "rb");
+  fseek(outfile, 0, SEEK_END);
+  int fsize = ftell(outfile);
+  result = (uint8_t*) malloc(fsize);
+  fseek(outfile, 0, SEEK_SET);
+  fread(result, fsize, 1, outfile);
+  return val(typed_memory_view(fsize, result));
+}
+
+void free_result() {
+  free(result);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  value_object<OptiPngOpts>("OptiPngOpts")
+    .field("level", &OptiPngOpts::level);
+
+  function("version", &version);
+  function("compress", &compress);
+  function("free_result", &free_result);
+}
--- a/codecs/optipng/optipng.d.ts
+++ b/codecs/optipng/optipng.d.ts
@ -0,0 +1,10 @@
+import {EncodeOptions} from "src/codecs/optipng/encoder";
+
+export interface OptiPngModule extends EmscriptenWasm.Module {
+  compress(data: BufferSource, opts: EncodeOptions): Uint8Array;
+  free_result(): void;
+}
+
+export default function(opts: EmscriptenWasm.ModuleOpts): OptiPngModule;
+
+
--- a/codecs/optipng/optipng.js
+++ b/codecs/optipng/optipng.js
--- a/codecs/optipng/optipng.wasm
+++ b/codecs/optipng/optipng.wasm
--- a/codecs/optipng/package-lock.json
+++ b/codecs/optipng/package-lock.json
--- a/codecs/optipng/package.json
+++ b/codecs/optipng/package.json
@ -0,0 +1,22 @@
+{
+  "name": "optipng",
+  "scripts": {
+    "install": "tar-dependency install && napa",
+    "build": "npm run build:wasm",
+    "build:wasm": "docker run --rm -v $(pwd):/src -e SKIP_ZLIB=\"${SKIP_ZLIB}\" -e SKIP_LIBPNG=\"${SKIP_LIBPNG}\" trzeci/emscripten ./build.sh"
+  },
+  "tarDependencies": {
+    "node_modules/optipng": {
+      "url": "https://netcologne.dl.sourceforge.net/project/optipng/OptiPNG/optipng-0.7.7/optipng-0.7.7.tar.gz",
+      "strip": 1
+    }
+  },
+  "napa": {
+    "libpng": "emscripten-ports/libpng",
+    "zlib": "emscripten-ports/zlib"
+  },
+  "dependencies": {
+    "napa": "3.0.0",
+    "tar-dependency": "0.0.3"
+  }
+}
--- a/codecs/oxipng/.gitignore
+++ b/codecs/oxipng/.gitignore
@ -1 +0,0 @@
-/target
--- a/codecs/oxipng/Cargo.lock
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--- a/codecs/oxipng/Cargo.toml
+++ b/codecs/oxipng/Cargo.toml
@ -1,21 +0,0 @@
-[package]
-name = "oxipng"
-version = "0.1.0"
-authors = ["Ingvar Stepanyan <me@rreverser.com>"]
-edition = "2018"
-publish = false
-
-[lib]
-crate-type = ["cdylib"]
-
-[dependencies]
-oxipng = { version = "2.3.0", default-features = false }
-wasm-bindgen = "0.2.48"
-log = { version = "0.4", features = ["release_max_level_off"] }
-
-[profile.release]
-lto = true
-opt-level = "s"
-
-[patch.crates-io]
-oxipng = { git = "https://github.com/shssoichiro/oxipng.git", branch = "master" }
--- a/codecs/oxipng/Dockerfile
+++ b/codecs/oxipng/Dockerfile
@ -1,12 +0,0 @@
-FROM rust
-RUN rustup target add wasm32-unknown-unknown
-RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
-
-RUN mkdir /opt/wabt && \
- curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
-
-RUN mkdir /opt/wasi-sdk && \
-  curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-8/wasi-sdk-8.0-linux.tar.gz | tar -xzf - -C /opt/wasi-sdk --strip 1
-
-ENV PATH="/opt/wabt:/opt/wasi-sdk/bin:${PATH}"
-WORKDIR /src
--- a/codecs/oxipng/build.sh
+++ b/codecs/oxipng/build.sh
@ -1,22 +0,0 @@
-#!/bin/bash
-
-set -e
-
-echo "============================================="
-echo "Compiling wasm"
-echo "============================================="
-(
-  wasm-pack build
-  wasm-strip pkg/oxipng_bg.wasm
-  rm pkg/.gitignore
-)
-echo "============================================="
-echo "Compiling wasm  done"
-echo "============================================="
-
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
-echo "Did you update your docker image?"
-echo "Run \`docker pull ubuntu\`"
-echo "Run \`docker pull rust\`"
-echo "Run \`docker build -t squoosh-oxipng .\`"
-echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/oxipng/package-lock.json
+++ b/codecs/oxipng/package-lock.json
@ -1,4 +0,0 @@
-{
-  "name": "oxipng",
-  "lockfileVersion": 1
-}
--- a/codecs/oxipng/package.json
+++ b/codecs/oxipng/package.json
@ -1,7 +0,0 @@
-{
-  "name": "oxipng",
-  "scripts": {
-    "build:image": "docker build -t squoosh-oxipng .",
-    "build": "docker run --rm -v $(pwd):/src squoosh-oxipng ./build.sh"
-  }
-}
--- a/codecs/oxipng/pkg/oxipng.d.ts
+++ b/codecs/oxipng/pkg/oxipng.d.ts
@ -1,8 +0,0 @@
-/* tslint:disable */
-/* eslint-disable */
-/**
-* @param {Uint8Array} data 
-* @param {number} level 
-* @returns {Uint8Array} 
-*/
-export function optimise(data: Uint8Array, level: number): Uint8Array;
--- a/codecs/oxipng/pkg/oxipng.js
+++ b/codecs/oxipng/pkg/oxipng.js
@ -1,60 +0,0 @@
-import * as wasm from './oxipng_bg.wasm';
-
-const lTextDecoder = typeof TextDecoder === 'undefined' ? require('util').TextDecoder : TextDecoder;
-
-let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
-
-cachedTextDecoder.decode();
-
-let cachegetUint8Memory0 = null;
-function getUint8Memory0() {
-    if (cachegetUint8Memory0 === null || cachegetUint8Memory0.buffer !== wasm.memory.buffer) {
-        cachegetUint8Memory0 = new Uint8Array(wasm.memory.buffer);
-    }
-    return cachegetUint8Memory0;
-}
-
-function getStringFromWasm0(ptr, len) {
-    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
-}
-
-let WASM_VECTOR_LEN = 0;
-
-function passArray8ToWasm0(arg, malloc) {
-    const ptr = malloc(arg.length * 1);
-    getUint8Memory0().set(arg, ptr / 1);
-    WASM_VECTOR_LEN = arg.length;
-    return ptr;
-}
-
-let cachegetInt32Memory0 = null;
-function getInt32Memory0() {
-    if (cachegetInt32Memory0 === null || cachegetInt32Memory0.buffer !== wasm.memory.buffer) {
-        cachegetInt32Memory0 = new Int32Array(wasm.memory.buffer);
-    }
-    return cachegetInt32Memory0;
-}
-
-function getArrayU8FromWasm0(ptr, len) {
-    return getUint8Memory0().subarray(ptr / 1, ptr / 1 + len);
-}
-/**
-* @param {Uint8Array} data
-* @param {number} level
-* @returns {Uint8Array}
-*/
-export function optimise(data, level) {
-    var ptr0 = passArray8ToWasm0(data, wasm.__wbindgen_malloc);
-    var len0 = WASM_VECTOR_LEN;
-    wasm.optimise(8, ptr0, len0, level);
-    var r0 = getInt32Memory0()[8 / 4 + 0];
-    var r1 = getInt32Memory0()[8 / 4 + 1];
-    var v1 = getArrayU8FromWasm0(r0, r1).slice();
-    wasm.__wbindgen_free(r0, r1 * 1);
-    return v1;
-}
-
-export const __wbindgen_throw = function(arg0, arg1) {
-    throw new Error(getStringFromWasm0(arg0, arg1));
-};
-
--- a/codecs/oxipng/pkg/oxipng_bg.d.ts
+++ b/codecs/oxipng/pkg/oxipng_bg.d.ts
@ -1,8 +0,0 @@
-/* tslint:disable */
-/* eslint-disable */
-export const memory: WebAssembly.Memory;
-export function optimise(a: number, b: number, c: number, d: number): void;
-export function malloc(a: number): number;
-export function free(a: number): void;
-export function __wbindgen_malloc(a: number): number;
-export function __wbindgen_free(a: number, b: number): void;
--- a/codecs/oxipng/pkg/oxipng_bg.wasm
+++ b/codecs/oxipng/pkg/oxipng_bg.wasm
--- a/codecs/oxipng/pkg/package.json
+++ b/codecs/oxipng/pkg/package.json
@ -1,15 +0,0 @@
-{
-  "name": "oxipng",
-  "collaborators": [
-    "Ingvar Stepanyan <me@rreverser.com>"
-  ],
-  "version": "0.1.0",
-  "files": [
-    "oxipng_bg.wasm",
-    "oxipng.js",
-    "oxipng.d.ts"
-  ],
-  "module": "oxipng.js",
-  "types": "oxipng.d.ts",
-  "sideEffects": false
-}
--- a/codecs/oxipng/src/lib.rs
+++ b/codecs/oxipng/src/lib.rs
@ -1,10 +0,0 @@
-mod malloc_shim;
-
-use wasm_bindgen::prelude::*;
-
-#[wasm_bindgen(catch)]
-pub fn optimise(data: &[u8], level: u8) -> Vec<u8> {
-  let mut options = oxipng::Options::from_preset(level);
-  options.deflate = oxipng::Deflaters::Libdeflater;
-  oxipng::optimize_from_memory(data, &options).unwrap_throw()
-}
--- a/codecs/oxipng/src/malloc_shim.rs
+++ b/codecs/oxipng/src/malloc_shim.rs
@ -1,47 +0,0 @@
-//! This is a module that provides `malloc` and `free` for `libdeflate`.
-//! These implementations are compatible with the standard signatures
-//! but use Rust allocator instead of including libc one as well.
-//!
-//! Rust allocator APIs requires passing size and alignment to the
-//! `dealloc` function. This is different from C API, which only
-//! expects a pointer in `free` and expects allocators to take care of
-//! storing any necessary information elsewhere.
-//!
-//! In order to simulate C API, we allocate a `size_and_data_ptr`
-//! of size `sizeof(usize) + size` where `size` is the requested number
-//! of bytes. Then, we store `size` at the beginning of the allocated
-//! chunk (within those `sizeof(usize)` bytes) and return
-//! `data_ptr = size_and_data_ptr + sizeof(usize)` to the calleer:
-//!
-//! [`size`][...actual data]
-//! -^------------------ `size_and_data_ptr`
-//! ---------^---------- `data_ptr`
-//!
-//! Then, in `free`, the caller gives us `data_ptr`. We can subtract
-//! `sizeof(usize)` back and get the original `size_and_data_ptr`.
-//! At this point we can read `size` back and call the Rust `dealloc`
-//! for the whole allocated chunk.
-//!
-//! I've raised an upstream issue to hopefully make this easier in
-//! future: https://github.com/ebiggers/libdeflate/issues/62
-
-use std::alloc::*;
-use std::mem::{align_of, size_of};
-
-unsafe fn layout_for(size: usize) -> Layout {
-    Layout::from_size_align_unchecked(size_of::<usize>() + size, align_of::<usize>())
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn malloc(size: usize) -> *mut u8 {
-    let size_and_data_ptr = alloc(layout_for(size));
-    *(size_and_data_ptr as *mut usize) = size;
-    size_and_data_ptr.add(size_of::<usize>())
-}
-
-#[no_mangle]
-pub unsafe extern "C" fn free(data_ptr: *mut u8) {
-    let size_and_data_ptr = data_ptr.sub(size_of::<usize>());
-    let size = *(size_and_data_ptr as *const usize);
-    dealloc(size_and_data_ptr, layout_for(size))
-}
--- a/codecs/resize/Cargo.toml
+++ b/codecs/resize/Cargo.toml
@ -1,5 +1,5 @@
 [package]
-name = "resize"
+name = "squooshresize"
 version = "0.1.0"
 authors = ["Surma <surma@surma.link>"]

--- a/codecs/resize/Dockerfile
+++ b/codecs/resize/Dockerfile
@ -1,9 +1,18 @@
+FROM ubuntu
+RUN apt-get update && \
+  apt-get install -qqy git build-essential cmake python2.7
+RUN git clone --recursive https://github.com/WebAssembly/wabt /usr/src/wabt
+RUN mkdir -p /usr/src/wabt/build
+WORKDIR /usr/src/wabt/build
+RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
+  make && \
+  make install
+
 FROM rust
-RUN rustup target add wasm32-unknown-unknown
-RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+RUN rustup install nightly && \
+  rustup target add --toolchain nightly wasm32-unknown-unknown && \
+  cargo install wasm-pack

-RUN mkdir /opt/wabt && \
- curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
-
-ENV PATH="/opt/wabt:${PATH}"
+COPY --from=0 /opt/wabt /opt/wabt
+ENV PATH="/opt/wabt/bin:${PATH}"
 WORKDIR /src
--- a/codecs/resize/benchmark.js
+++ b/codecs/resize/benchmark.js
@ -0,0 +1,53 @@
+// THIS IS NOT A NODE SCRIPT
+// This is a d8 script. Please install jsvu[1] and install v8.
+// Then run `npm run --silent benchmark`.
+// [1]: https://github.com/GoogleChromeLabs/jsvu
+
+self = global = this;
+load("./pkg/resize.js");
+
+async function init() {
+  //  Adjustable constants.
+  const inputDimensions = 2000;
+  const outputDimensions = 1500;
+  const algorithm = 3; // Lanczos
+  const iterations = new Array(100);
+
+  // Constants. Don’t change.
+  const imageByteSize = inputDimensions * inputDimensions * 4;
+  const imageBuffer = new Uint8ClampedArray(imageByteSize);
+
+  const module = await WebAssembly.compile(readbuffer("./pkg/resize_bg.wasm"));
+  await wasm_bindgen(module);
+  [[false, false], [true, false], [false, true], [true, true]].forEach(
+    opts => {
+      print(`\npremultiplication: ${opts[0]}`);
+      print(`color space conversion: ${opts[1]}`);
+      print(`==============================`);
+      for (let i = 0; i < 100; i++) {
+        const start = Date.now();
+        wasm_bindgen.resize(
+          imageBuffer,
+          inputDimensions,
+          inputDimensions,
+          outputDimensions,
+          outputDimensions,
+          algorithm,
+          ...opts
+        );
+        iterations[i] = Date.now() - start;
+      }
+      const average =
+        iterations.reduce((sum, c) => sum + c) / iterations.length;
+      const stddev = Math.sqrt(
+        iterations
+          .map(i => Math.pow(i - average, 2))
+          .reduce((sum, c) => sum + c) / iterations.length
+      );
+      print(`n = ${iterations.length}`);
+      print(`Average: ${average}`);
+      print(`StdDev: ${stddev}`);
+    }
+  );
+}
+init().catch(e => console.error(e, e.stack));
--- a/codecs/resize/build.sh
+++ b/codecs/resize/build.sh
@ -6,9 +6,9 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  wasm-pack build
+  rustup run nightly \
+    wasm-pack build --target no-modules
  wasm-strip pkg/resize_bg.wasm
-  rm pkg/.gitignore
 )
 echo "============================================="
 echo "Compiling wasm  done"
--- a/codecs/resize/package.json
+++ b/codecs/resize/package.json
@ -2,6 +2,7 @@
  "name": "resize",
  "scripts": {
    "build:image": "docker build -t squoosh-resize .",
-    "build": "docker run --rm -v $(pwd):/src squoosh-resize ./build.sh"
+    "build": "docker run --rm -v $(pwd):/src squoosh-resize ./build.sh",
+    "benchmark": "v8 --no-liftoff --no-wasm-tier-up ./benchmark.js"
  }
 }
--- a/codecs/resize/pkg/package.json
+++ b/codecs/resize/pkg/package.json
@ -1,15 +0,0 @@
-{
-  "name": "resize",
-  "collaborators": [
-    "Surma <surma@surma.link>"
-  ],
-  "version": "0.1.0",
-  "files": [
-    "resize_bg.wasm",
-    "resize.js",
-    "resize.d.ts"
-  ],
-  "module": "resize.js",
-  "types": "resize.d.ts",
-  "sideEffects": "false"
-}
--- a/codecs/resize/pkg/resize.d.ts
+++ b/codecs/resize/pkg/resize.d.ts
@ -1,13 +1,13 @@
 /* tslint:disable */
 /**
-* @param {Uint8Array} input_image 
-* @param {number} input_width 
-* @param {number} input_height 
-* @param {number} output_width 
-* @param {number} output_height 
-* @param {number} typ_idx 
-* @param {boolean} premultiply 
-* @param {boolean} color_space_conversion 
+* @param {Uint8Array} arg0 
+* @param {number} arg1 
+* @param {number} arg2 
+* @param {number} arg3 
+* @param {number} arg4 
+* @param {number} arg5 
+* @param {boolean} arg6 
+* @param {boolean} arg7 
 * @returns {Uint8Array} 
 */
-export function resize(input_image: Uint8Array, input_width: number, input_height: number, output_width: number, output_height: number, typ_idx: number, premultiply: boolean, color_space_conversion: boolean): Uint8Array;
+export function resize(arg0: Uint8Array, arg1: number, arg2: number, arg3: number, arg4: number, arg5: number, arg6: boolean, arg7: boolean): Uint8Array;
--- a/codecs/resize/pkg/resize.js
+++ b/codecs/resize/pkg/resize.js
@ -1,50 +1,114 @@
-import * as wasm from './resize_bg.wasm';
+(function() {
+    var wasm;
+    const __exports = {};

-let cachegetUint8Memory = null;
-function getUint8Memory() {
-    if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
-        cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
+
+    let cachegetUint8Memory = null;
+    function getUint8Memory() {
+        if (cachegetUint8Memory === null || cachegetUint8Memory.buffer !== wasm.memory.buffer) {
+            cachegetUint8Memory = new Uint8Array(wasm.memory.buffer);
+        }
+        return cachegetUint8Memory;
    }
-    return cachegetUint8Memory;
-}

-let WASM_VECTOR_LEN = 0;
+    let WASM_VECTOR_LEN = 0;

-function passArray8ToWasm(arg) {
-    const ptr = wasm.__wbindgen_malloc(arg.length * 1);
-    getUint8Memory().set(arg, ptr / 1);
-    WASM_VECTOR_LEN = arg.length;
-    return ptr;
-}
-
-let cachegetInt32Memory = null;
-function getInt32Memory() {
-    if (cachegetInt32Memory === null || cachegetInt32Memory.buffer !== wasm.memory.buffer) {
-        cachegetInt32Memory = new Int32Array(wasm.memory.buffer);
+    function passArray8ToWasm(arg) {
+        const ptr = wasm.__wbindgen_malloc(arg.length * 1);
+        getUint8Memory().set(arg, ptr / 1);
+        WASM_VECTOR_LEN = arg.length;
+        return ptr;
    }
-    return cachegetInt32Memory;
-}

-function getArrayU8FromWasm(ptr, len) {
-    return getUint8Memory().subarray(ptr / 1, ptr / 1 + len);
-}
-/**
-* @param {Uint8Array} input_image
-* @param {number} input_width
-* @param {number} input_height
-* @param {number} output_width
-* @param {number} output_height
-* @param {number} typ_idx
-* @param {boolean} premultiply
-* @param {boolean} color_space_conversion
-* @returns {Uint8Array}
-*/
-export function resize(input_image, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion) {
-    const retptr = 8;
-    const ret = wasm.resize(retptr, passArray8ToWasm(input_image), WASM_VECTOR_LEN, input_width, input_height, output_width, output_height, typ_idx, premultiply, color_space_conversion);
-    const memi32 = getInt32Memory();
-    const v0 = getArrayU8FromWasm(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1]).slice();
-    wasm.__wbindgen_free(memi32[retptr / 4 + 0], memi32[retptr / 4 + 1] * 1);
-    return v0;
-}
+    function getArrayU8FromWasm(ptr, len) {
+        return getUint8Memory().subarray(ptr / 1, ptr / 1 + len);
+    }

+    let cachedGlobalArgumentPtr = null;
+    function globalArgumentPtr() {
+        if (cachedGlobalArgumentPtr === null) {
+            cachedGlobalArgumentPtr = wasm.__wbindgen_global_argument_ptr();
+        }
+        return cachedGlobalArgumentPtr;
+    }
+
+    let cachegetUint32Memory = null;
+    function getUint32Memory() {
+        if (cachegetUint32Memory === null || cachegetUint32Memory.buffer !== wasm.memory.buffer) {
+            cachegetUint32Memory = new Uint32Array(wasm.memory.buffer);
+        }
+        return cachegetUint32Memory;
+    }
+    /**
+    * @param {Uint8Array} arg0
+    * @param {number} arg1
+    * @param {number} arg2
+    * @param {number} arg3
+    * @param {number} arg4
+    * @param {number} arg5
+    * @param {boolean} arg6
+    * @param {boolean} arg7
+    * @returns {Uint8Array}
+    */
+    __exports.resize = function(arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7) {
+        const ptr0 = passArray8ToWasm(arg0);
+        const len0 = WASM_VECTOR_LEN;
+        const retptr = globalArgumentPtr();
+        wasm.resize(retptr, ptr0, len0, arg1, arg2, arg3, arg4, arg5, arg6, arg7);
+        const mem = getUint32Memory();
+        const rustptr = mem[retptr / 4];
+        const rustlen = mem[retptr / 4 + 1];
+
+        const realRet = getArrayU8FromWasm(rustptr, rustlen).slice();
+        wasm.__wbindgen_free(rustptr, rustlen * 1);
+        return realRet;
+
+    };
+
+    const heap = new Array(32);
+
+    heap.fill(undefined);
+
+    heap.push(undefined, null, true, false);
+
+    let heap_next = heap.length;
+
+    function dropObject(idx) {
+        if (idx < 36) return;
+        heap[idx] = heap_next;
+        heap_next = idx;
+    }
+
+    __exports.__wbindgen_object_drop_ref = function(i) { dropObject(i); };
+
+    function init(path_or_module) {
+        let instantiation;
+        const imports = { './resize': __exports };
+        if (path_or_module instanceof WebAssembly.Module) {
+            instantiation = WebAssembly.instantiate(path_or_module, imports)
+            .then(instance => {
+            return { instance, module: path_or_module }
+        });
+    } else {
+        const data = fetch(path_or_module);
+        if (typeof WebAssembly.instantiateStreaming === 'function') {
+            instantiation = WebAssembly.instantiateStreaming(data, imports)
+            .catch(e => {
+                console.warn("`WebAssembly.instantiateStreaming` failed. Assuming this is because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n", e);
+                return data
+                .then(r => r.arrayBuffer())
+                .then(bytes => WebAssembly.instantiate(bytes, imports));
+            });
+        } else {
+            instantiation = data
+            .then(response => response.arrayBuffer())
+            .then(buffer => WebAssembly.instantiate(buffer, imports));
+        }
+    }
+    return instantiation.then(({instance}) => {
+        wasm = init.wasm = instance.exports;
+
+    });
+};
+self.wasm_bindgen = Object.assign(init, __exports);
+})();
--- a/codecs/resize/pkg/resize_bg.d.ts
+++ b/codecs/resize/pkg/resize_bg.d.ts
@ -1,5 +1,6 @@
 /* tslint:disable */
 export const memory: WebAssembly.Memory;
+export function __wbindgen_global_argument_ptr(): number;
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
 export function resize(a: number, b: number, c: number, d: number, e: number, f: number, g: number, h: number, i: number, j: number): void;
--- a/codecs/resize/pkg/resize_bg.wasm
+++ b/codecs/resize/pkg/resize_bg.wasm
--- a/codecs/rotate/Dockerfile
+++ b/codecs/rotate/Dockerfile
@ -1,8 +1,17 @@
+FROM ubuntu
+RUN apt-get update && \
+  apt-get install -qqy git build-essential cmake python2.7
+RUN git clone --recursive https://github.com/WebAssembly/wabt /usr/src/wabt
+RUN mkdir -p /usr/src/wabt/build
+WORKDIR /usr/src/wabt/build
+RUN cmake .. -DCMAKE_INSTALL_PREFIX=/opt/wabt && \
+  make && \
+  make install
+
 FROM rust
-RUN rustup target add wasm32-unknown-unknown
+RUN rustup install nightly && \
+  rustup target add --toolchain nightly wasm32-unknown-unknown

-RUN mkdir /opt/wabt && \
- curl -L https://github.com/WebAssembly/wabt/releases/download/1.0.11/wabt-1.0.11-linux.tar.gz  | tar -xzf - -C /opt/wabt --strip 1
-
-ENV PATH="/opt/wabt:${PATH}"
+COPY --from=0 /opt/wabt /opt/wabt
+ENV PATH="/opt/wabt/bin:${PATH}"
 WORKDIR /src
--- a/codecs/rotate/build.sh
+++ b/codecs/rotate/build.sh
@ -6,7 +6,8 @@ echo "============================================="
 echo "Compiling wasm"
 echo "============================================="
 (
-  cargo build \
+  rustup run nightly \
+    cargo build \
    --target wasm32-unknown-unknown \
    --release
  cp target/wasm32-unknown-unknown/release/rotate.wasm .
--- a/codecs/rotate/rotate.wasm
+++ b/codecs/rotate/rotate.wasm
--- a/codecs/webp_dec/build.sh
+++ b/codecs/webp_dec/build.sh
@ -31,7 +31,7 @@ test -n "$SKIP_LIBWEBP" || (
    --disable-neon \
    --disable-sse2 \
    --disable-sse4.1
-  emmake make -j`nproc`
+  emmake make
 )
 echo "============================================="
 echo "Compiling wasm bindings"
@ -39,7 +39,6 @@ echo "============================================="
 (
  emcc \
    ${OPTIMIZE} \
-    --closure 1 \
    --bind \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
@ -57,5 +56,5 @@ echo "============================================="

 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "Run \`docker pull trzeci/emscripten\`"
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/webp_dec/package.json
+++ b/codecs/webp_dec/package.json
@ -2,7 +2,7 @@
  "name": "webp_dec",
  "scripts": {
    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
  },
  "napa": {
    "libwebp": "webmproject/libwebp#v1.0.2"
--- a/codecs/webp_dec/webp_dec.js
+++ b/codecs/webp_dec/webp_dec.js
--- a/codecs/webp_dec/webp_dec.wasm
+++ b/codecs/webp_dec/webp_dec.wasm
--- a/codecs/webp_enc/build.sh
+++ b/codecs/webp_enc/build.sh
@ -32,7 +32,7 @@ test -n "$SKIP_LIBWEBP" || (
    --disable-neon \
    --disable-sse2 \
    --disable-sse4.1
-  emmake make -j`nproc`
+  emmake make
 )
 echo "============================================="
 echo "Compiling wasm bindings"
@ -40,7 +40,6 @@ echo "============================================="
 (
  emcc \
    ${OPTIMIZE} \
-    --closure 1 \
    --bind \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
@ -58,5 +57,5 @@ echo "============================================="

 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo "Did you update your docker image?"
-echo "Run \`docker pull trzeci/emscripten-upstream\`"
+echo "Run \`docker pull trzeci/emscripten\`"
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
--- a/codecs/webp_enc/package.json
+++ b/codecs/webp_enc/package.json
@ -2,7 +2,7 @@
  "name": "webp_enc",
  "scripts": {
    "install": "napa",
-    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten-upstream ./build.sh"
+    "build": "docker run --rm -v $(pwd):/src trzeci/emscripten ./build.sh"
  },
  "napa": {
    "libwebp": "webmproject/libwebp#v1.0.2"
--- a/codecs/webp_enc/webp_enc.js
+++ b/codecs/webp_enc/webp_enc.js
--- a/codecs/webp_enc/webp_enc.wasm
+++ b/codecs/webp_enc/webp_enc.wasm
--- a/icon-large-maskable.png
+++ b/icon-large-maskable.png
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -1,7 +1,7 @@
 {
  "private": true,
  "name": "squoosh",
-  "version": "1.9.1",
+  "version": "1.8.0",
  "license": "apache-2.0",
  "scripts": {
    "start": "webpack-dev-server --host 0.0.0.0 --hot",
@ -16,61 +16,61 @@
    }
  },
  "devDependencies": {
-    "@types/node": "10.14.15",
+    "@types/node": "10.14.9",
    "@types/pretty-bytes": "5.1.0",
    "@types/webassembly-js-api": "0.0.3",
    "@webcomponents/custom-elements": "1.2.4",
    "@webpack-cli/serve": "0.1.8",
    "assets-webpack-plugin": "3.9.10",
    "chalk": "2.4.2",
-    "chokidar": "3.0.2",
+    "chokidar": "3.0.1",
    "classnames": "2.2.6",
    "clean-webpack-plugin": "1.0.1",
    "comlink": "3.1.1",
-    "copy-webpack-plugin": "5.0.4",
-    "critters-webpack-plugin": "2.4.0",
+    "copy-webpack-plugin": "5.0.3",
+    "critters-webpack-plugin": "2.3.0",
    "css-loader": "1.0.1",
    "ejs": "2.6.2",
    "escape-string-regexp": "2.0.0",
    "exports-loader": "0.7.0",
    "file-drop-element": "0.2.0",
-    "file-loader": "4.2.0",
+    "file-loader": "4.0.0",
    "gzip-size": "5.1.1",
    "html-webpack-plugin": "3.2.0",
-    "husky": "3.0.4",
+    "husky": "2.4.1",
    "idb-keyval": "3.2.0",
    "linkstate": "1.1.1",
    "loader-utils": "1.2.3",
-    "mini-css-extract-plugin": "0.8.0",
+    "mini-css-extract-plugin": "0.7.0",
    "minimatch": "3.0.4",
    "node-fetch": "2.6.0",
-    "node-sass": "4.13.0",
+    "node-sass": "4.12.0",
    "optimize-css-assets-webpack-plugin": "5.0.1",
    "pointer-tracker": "2.0.3",
    "preact": "8.4.2",
    "prerender-loader": "1.3.0",
-    "pretty-bytes": "5.3.0",
+    "pretty-bytes": "5.2.0",
    "progress-bar-webpack-plugin": "1.12.1",
-    "raw-loader": "3.1.0",
-    "readdirp": "3.1.2",
-    "sass-loader": "7.3.1",
-    "script-ext-html-webpack-plugin": "2.1.4",
+    "raw-loader": "3.0.0",
+    "readdirp": "3.0.2",
+    "sass-loader": "7.1.0",
+    "script-ext-html-webpack-plugin": "2.1.3",
    "source-map-loader": "0.2.4",
-    "style-loader": "1.0.0",
-    "terser-webpack-plugin": "1.4.1",
-    "travis-size-report": "1.1.0",
+    "style-loader": "0.23.1",
+    "terser-webpack-plugin": "1.3.0",
+    "travis-size-report": "1.0.1",
    "ts-loader": "6.0.3",
-    "tslint": "5.19.0",
+    "tslint": "5.17.0",
    "tslint-config-airbnb": "5.11.1",
    "tslint-config-semistandard": "8.0.1",
    "tslint-react": "4.0.0",
    "typed-css-modules": "0.4.2",
-    "typescript": "3.5.3",
-    "url-loader": "2.1.0",
-    "webpack": "4.43.0",
-    "webpack-bundle-analyzer": "3.4.1",
+    "typescript": "3.5.2",
+    "url-loader": "2.0.0",
+    "webpack": "4.28.0",
+    "webpack-bundle-analyzer": "3.3.2",
    "webpack-cli": "3.3.4",
-    "webpack-dev-server": "3.8.0",
+    "webpack-dev-server": "3.7.1",
    "worker-plugin": "3.1.0"
  }
 }
--- a/src/codecs/encoders.ts
+++ b/src/codecs/encoders.ts
@ -1,5 +1,5 @@
 import * as identity from './identity/encoder-meta';
-import * as oxiPNG from './oxipng/encoder-meta';
+import * as optiPNG from './optipng/encoder-meta';
 import * as mozJPEG from './mozjpeg/encoder-meta';
 import * as webP from './webp/encoder-meta';
 import * as browserPNG from './browser-png/encoder-meta';
@ -17,7 +17,7 @@ export interface EncoderSupportMap {

 export type EncoderState =
  identity.EncoderState |
-  oxiPNG.EncoderState |
+  optiPNG.EncoderState |
  mozJPEG.EncoderState |
  webP.EncoderState |
  browserPNG.EncoderState |
@ -31,7 +31,7 @@ export type EncoderState =

 export type EncoderOptions =
  identity.EncodeOptions |
-  oxiPNG.EncodeOptions |
+  optiPNG.EncodeOptions |
  mozJPEG.EncodeOptions |
  webP.EncodeOptions |
  browserPNG.EncodeOptions |
@ -47,7 +47,7 @@ export type EncoderType = keyof typeof encoderMap;

 export const encoderMap = {
  [identity.type]: identity,
-  [oxiPNG.type]: oxiPNG,
+  [optiPNG.type]: optiPNG,
  [mozJPEG.type]: mozJPEG,
  [webP.type]: webP,
  [browserPNG.type]: browserPNG,
--- a/src/codecs/hqx/processor.ts
+++ b/src/codecs/hqx/processor.ts
@ -1,12 +1,24 @@
-import { resize } from '../../../codecs/hqx/pkg';
+import wasmUrl from '../../../codecs/hqx/pkg/squooshhqx_bg.wasm';
+import '../../../codecs/hqx/pkg/squooshhqx';
 import { HqxOptions } from './processor-meta';

+interface WasmBindgenExports {
+  resize: typeof import('../../../codecs/hqx/pkg/squooshhqx').resize;
+}
+
+type WasmBindgen = ((url: string) => Promise<void>) & WasmBindgenExports;
+
+declare var wasm_bindgen: WasmBindgen;
+
+const ready = wasm_bindgen(wasmUrl);
+
 export async function hqx(
  data: ImageData,
  opts: HqxOptions,
 ): Promise<ImageData> {
  const input = data;
-  const result = resize(
+  await ready;
+  const result = wasm_bindgen.resize(
    new Uint32Array(input.data.buffer),
    input.width,
    input.height,
--- a/src/codecs/optipng/encoder-meta.ts
+++ b/src/codecs/optipng/encoder-meta.ts
@ -4,7 +4,7 @@ export interface EncodeOptions {
 export interface EncoderState { type: typeof type; options: EncodeOptions; }

 export const type = 'png';
-export const label = 'OxiPNG';
+export const label = 'OptiPNG';
 export const mimeType = 'image/png';
 export const extension = 'png';

--- a/src/codecs/optipng/encoder.ts
+++ b/src/codecs/optipng/encoder.ts
@ -0,0 +1,18 @@
+import optipng, { OptiPngModule } from '../../../codecs/optipng/optipng';
+import wasmUrl from '../../../codecs/optipng/optipng.wasm';
+import { EncodeOptions } from './encoder-meta';
+import { initEmscriptenModule } from '../util';
+
+let emscriptenModule: Promise<OptiPngModule>;
+
+export async function compress(data: BufferSource, options: EncodeOptions): Promise<ArrayBuffer> {
+  if (!emscriptenModule) emscriptenModule = initEmscriptenModule(optipng, wasmUrl);
+
+  const module = await emscriptenModule;
+  const resultView = module.compress(data, options);
+  const result = new Uint8Array(resultView);
+  module.free_result();
+
+  // wasm can’t run on SharedArrayBuffers, so we hard-cast to ArrayBuffer.
+  return result.buffer as ArrayBuffer;
+}
--- a/src/codecs/optipng/options.tsx
+++ b/src/codecs/optipng/options.tsx
@ -10,7 +10,7 @@ type Props = {
  onChange(newOptions: EncodeOptions): void;
 };

-export default class OxiPNGEncoderOptions extends Component<Props, {}> {
+export default class OptiPNGEncoderOptions extends Component<Props, {}> {
  @bind
  onChange(event: Event) {
    const form = (event.currentTarget as HTMLInputElement).closest('form') as HTMLFormElement;
@ -28,7 +28,7 @@ export default class OxiPNGEncoderOptions extends Component<Props, {}> {
          <Range
            name="level"
            min="0"
-            max="3"
+            max="7"
            step="1"
            value={options.level}
            onInput={this.onChange}
--- a/src/codecs/oxipng/encoder.ts
+++ b/src/codecs/oxipng/encoder.ts
@ -1,6 +0,0 @@
-import { optimise } from '../../../codecs/oxipng/pkg';
-import { EncodeOptions } from './encoder-meta';
-
-export async function compress(data: ArrayBuffer, options: EncodeOptions): Promise<ArrayBuffer> {
-  return optimise(new Uint8Array(data), options.level).buffer;
-}
--- a/src/codecs/processor-worker/index.ts
+++ b/src/codecs/processor-worker/index.ts
@ -2,18 +2,13 @@ import { expose } from 'comlink';
 import { isHqx } from '../resize/processor-meta';
 import { clamp } from '../util';

-function timed<T>(name: string, func: () => Promise<T>) {
-  console.time(name);
-  return func().finally(() => console.timeEnd(name));
-}
-
 async function mozjpegEncode(
  data: ImageData, options: import('../mozjpeg/encoder-meta').EncodeOptions,
 ): Promise<ArrayBuffer> {
  const { encode } = await import(
    /* webpackChunkName: "process-mozjpeg-enc" */
    '../mozjpeg/encoder');
-  return timed('mozjpegEncode', () => encode(data, options));
+  return encode(data, options);
 }

 async function quantize(
@ -22,7 +17,7 @@ async function quantize(
  const { process } = await import(
    /* webpackChunkName: "process-imagequant" */
    '../imagequant/processor');
-  return timed('quantize', () => process(data, opts));
+  return process(data, opts);
 }

 async function rotate(
@ -32,7 +27,7 @@ async function rotate(
    /* webpackChunkName: "process-rotate" */
    '../rotate/processor');

-  return timed('rotate', () => rotate(data, opts));
+  return rotate(data, opts);
 }

 async function resize(
@ -48,22 +43,22 @@ async function resize(
    const ratio = Math.max(widthRatio, heightRatio);
    if (ratio <= 1) return data;
    const factor = clamp(Math.ceil(ratio), { min: 2, max: 4 }) as 2|3|4;
-    return timed('hqx', () => hqx(data, { factor }));
+    return hqx(data, { factor });
  }
  const { resize } = await import(
    /* webpackChunkName: "process-resize" */
    '../resize/processor');

-  return timed('resize', () => resize(data, opts));
+  return resize(data, opts);
 }

-async function oxiPngEncode(
-  data: ArrayBuffer, options: import('../oxipng/encoder-meta').EncodeOptions,
+async function optiPngEncode(
+  data: BufferSource, options: import('../optipng/encoder-meta').EncodeOptions,
 ): Promise<ArrayBuffer> {
  const { compress } = await import(
-    /* webpackChunkName: "process-oxipng" */
-    '../oxipng/encoder');
-  return timed('oxiPngEncode', () => compress(data, options));
+    /* webpackChunkName: "process-optipng" */
+    '../optipng/encoder');
+  return compress(data, options);
 }

 async function webpEncode(
@ -72,14 +67,14 @@ async function webpEncode(
  const { encode } = await import(
    /* webpackChunkName: "process-webp-enc" */
    '../webp/encoder');
-  return timed('webpEncode', () => encode(data, options));
+  return encode(data, options);
 }

 async function webpDecode(data: ArrayBuffer): Promise<ImageData> {
  const { decode } = await import(
    /* webpackChunkName: "process-webp-dec" */
    '../webp/decoder');
-  return timed('webpDecode', () => decode(data));
+  return decode(data);
 }

 const exports = {
@ -87,7 +82,7 @@ const exports = {
  quantize,
  rotate,
  resize,
-  oxiPngEncode,
+  optiPngEncode,
  webpEncode,
  webpDecode,
 };
--- a/src/codecs/processor.ts
+++ b/src/codecs/processor.ts
@ -2,7 +2,7 @@ import { proxy } from 'comlink';
 import { QuantizeOptions } from './imagequant/processor-meta';
 import { canvasEncode, blobToArrayBuffer } from '../lib/util';
 import { EncodeOptions as MozJPEGEncoderOptions } from './mozjpeg/encoder-meta';
-import { EncodeOptions as OxiPNGEncoderOptions } from './oxipng/encoder-meta';
+import { EncodeOptions as OptiPNGEncoderOptions } from './optipng/encoder-meta';
 import { EncodeOptions as WebPEncoderOptions } from './webp/encoder-meta';
 import { EncodeOptions as BrowserJPEGOptions } from './browser-jpeg/encoder-meta';
 import { EncodeOptions as BrowserWebpEncodeOptions } from './browser-webp/encoder-meta';
@ -143,13 +143,13 @@ export default class Processor {
  }

  @Processor._processingJob({ needsWorker: true })
-  async oxiPngEncode(
-    data: ImageData, opts: OxiPNGEncoderOptions,
+  async optiPngEncode(
+    data: ImageData, opts: OptiPNGEncoderOptions,
  ): Promise<ArrayBuffer> {
-    // OxiPNG expects PNG input.
+    // OptiPNG expects PNG input.
    const pngBlob = await canvasEncode(data, 'image/png');
    const pngBuffer = await blobToArrayBuffer(pngBlob);
-    return this._workerApi!.oxiPngEncode(pngBuffer, opts);
+    return this._workerApi!.optiPngEncode(pngBuffer, opts);
  }

  @Processor._processingJob({ needsWorker: true })
--- a/src/codecs/resize/options.tsx
+++ b/src/codecs/resize/options.tsx
@ -24,6 +24,19 @@ interface State {

 const sizePresets = [0.25, 0.3333, 0.5, 1, 2, 3, 4];

+/**
+ * Should we allow the user to select hqx? Chrome currently has a wasm bug, so we currently avoid it
+ * there, unless overridden.
+ * crbug.com/974804
+ */
+const allowHqx: boolean = (() => {
+  const url = new URL(location.href);
+  return url.searchParams.has('allow-hqx')
+    // Yep. UA sniffing. Let's hope we can remove this soon.
+    // Block browsers with Chrome/, unless they also have Edge/ (since the Edge UA includes Chrome/)
+    || !navigator.userAgent.includes('Chrome/') || navigator.userAgent.includes('Edge/');
+})();
+
 export default class ResizerOptions extends Component<Props, State> {
  state: State = {
    maintainAspect: true,
@ -150,7 +163,7 @@ export default class ResizerOptions extends Component<Props, State> {
            <option value="mitchell">Mitchell</option>
            <option value="catrom">Catmull-Rom</option>
            <option value="triangle">Triangle (bilinear)</option>
-            <option value="hqx">hqx (pixel art)</option>
+            {allowHqx && <option value="hqx">hqx (pixel art)</option>}
            <option value="browser-pixelated">Browser pixelated</option>
            <option value="browser-low">Browser low quality</option>
            <option value="browser-medium">Browser medium quality</option>
--- a/src/codecs/resize/processor.ts
+++ b/src/codecs/resize/processor.ts
@ -1,6 +1,17 @@
+import wasmUrl from '../../../codecs/resize/pkg/resize_bg.wasm';
+import '../../../codecs/resize/pkg/resize';
 import { WorkerResizeOptions } from './processor-meta';
 import { getContainOffsets } from './util';
-import { resize as codecResize } from '../../../codecs/resize/pkg';
+
+interface WasmBindgenExports {
+  resize: typeof import('../../../codecs/resize/pkg/resize').resize;
+}
+
+type WasmBindgen = ((url: string) => Promise<void>) & WasmBindgenExports;
+
+declare var wasm_bindgen: WasmBindgen;
+
+const ready = wasm_bindgen(wasmUrl);

 function crop(data: ImageData, sx: number, sy: number, sw: number, sh: number): ImageData {
  const inputPixels = new Uint32Array(data.data.buffer);
@ -30,7 +41,9 @@ export async function resize(data: ImageData, opts: WorkerResizeOptions): Promis
    input = crop(input, Math.round(sx), Math.round(sy), Math.round(sw), Math.round(sh));
  }

-  const result = codecResize(
+  await ready;
+
+  const result = wasm_bindgen.resize(
    new Uint8Array(input.data.buffer), input.width, input.height, opts.width, opts.height,
    resizeMethods.indexOf(opts.method), opts.premultiply, opts.linearRGB,
  );
--- a/src/components/Options/index.tsx
+++ b/src/components/Options/index.tsx
@ -3,7 +3,7 @@ import { h, Component } from 'preact';
 import * as style from './style.scss';
 import { bind } from '../../lib/initial-util';
 import { cleanSet, cleanMerge } from '../../lib/clean-modify';
-import OxiPNGEncoderOptions from '../../codecs/oxipng/options';
+import OptiPNGEncoderOptions from '../../codecs/optipng/options';
 import MozJpegEncoderOptions from '../../codecs/mozjpeg/options';
 import BrowserJPEGEncoderOptions from '../../codecs/browser-jpeg/options';
 import WebPEncoderOptions from '../../codecs/webp/options';
@ -13,7 +13,7 @@ import QuantizerOptionsComponent from '../../codecs/imagequant/options';
 import ResizeOptionsComponent from '../../codecs/resize/options';

 import * as identity from '../../codecs/identity/encoder-meta';
-import * as oxiPNG from '../../codecs/oxipng/encoder-meta';
+import * as optiPNG from '../../codecs/optipng/encoder-meta';
 import * as mozJPEG from '../../codecs/mozjpeg/encoder-meta';
 import * as webP from '../../codecs/webp/encoder-meta';
 import * as browserPNG from '../../codecs/browser-png/encoder-meta';
@ -44,7 +44,7 @@ const encoderOptionsComponentMap: {
  [x: string]: (new (...args: any[]) => Component<any, any>) | undefined;
 } = {
  [identity.type]: undefined,
-  [oxiPNG.type]: OxiPNGEncoderOptions,
+  [optiPNG.type]: OptiPNGEncoderOptions,
  [mozJPEG.type]: MozJpegEncoderOptions,
  [webP.type]: WebPEncoderOptions,
  [browserPNG.type]: undefined,
--- a/src/components/compress/index.tsx
+++ b/src/components/compress/index.tsx
@ -7,7 +7,7 @@ import Output from '../Output';
 import Options from '../Options';
 import ResultCache from './result-cache';
 import * as identity from '../../codecs/identity/encoder-meta';
-import * as oxiPNG from '../../codecs/oxipng/encoder-meta';
+import * as optiPNG from '../../codecs/optipng/encoder-meta';
 import * as mozJPEG from '../../codecs/mozjpeg/encoder-meta';
 import * as webP from '../../codecs/webp/encoder-meta';
 import * as browserPNG from '../../codecs/browser-png/encoder-meta';
@ -109,6 +109,11 @@ async function preprocessImage(
    } else if (isHqx(preprocessData.resize)) {
      // Hqx can only do x2, x3 or x4.
      result = await processor.workerResize(result, preprocessData.resize);
+      // Seems like the globals from Rust from hqx and resize are conflicting.
+      // For now we can fix that by terminating the worker.
+      // TODO: Use wasm-bindgen’s new --web target to create a proper ES6 module
+      // and remove this.
+      processor.terminateWorker();
      // If the target size is not a clean x2, x3 or x4, use Catmull-Rom
      // for the remaining scaling.
      const pixelOpts = { ...preprocessData.resize, method: 'catrom' };
@ -133,7 +138,7 @@ async function compressImage(
 ): Promise<Fileish> {
  const compressedData = await (() => {
    switch (encodeData.type) {
-      case oxiPNG.type: return processor.oxiPngEncode(image, encodeData.options);
+      case optiPNG.type: return processor.optiPngEncode(image, encodeData.options);
      case mozJPEG.type: return processor.mozjpegEncode(image, encodeData.options);
      case webP.type: return processor.webpEncode(image, encodeData.options);
      case browserPNG.type: return processor.browserPngEncode(image);
--- a/src/manifest.json
+++ b/src/manifest.json
@ -11,12 +11,6 @@
      "src": "/assets/icon-large.png",
      "type": "image/png",
      "sizes": "1024x1024"
-    },
-    {
-      "src": "/assets/icon-large-maskable.png",
-      "type": "image/png",
-      "sizes": "1024x1024",
-      "purpose": "maskable"
    }
  ],
  "share_target": {
--- a/webpack.config.js
+++ b/webpack.config.js
@ -1,3 +1,4 @@
+const fs = require('fs');
 const path = require('path');
 const webpack = require('webpack');
 const CleanPlugin = require('clean-webpack-plugin');
@ -16,7 +17,11 @@ const CrittersPlugin = require('critters-webpack-plugin');
 const AssetTemplatePlugin = require('./config/asset-template-plugin');
 const addCssTypes = require('./config/add-css-types');

-const VERSION = require('./package.json').version;
+function readJson (filename) {
+  return JSON.parse(fs.readFileSync(filename));
+}
+
+const VERSION = readJson('./package.json').version;

 module.exports = async function (_, env) {
  const isProd = env.mode === 'production';
@ -142,14 +147,11 @@ module.exports = async function (_, env) {
        },
        {
          // All the codec files define a global with the same name as their file name. `exports-loader` attaches those to `module.exports`.
-          test: /\.js$/,
-          include: path.join(__dirname, 'src/codecs'),
+          test: /\/codecs\/.*\.js$/,
          loader: 'exports-loader'
        },
        {
-          // Emscripten modules don't work with Webpack's Wasm loader.
-          test: /\.wasm$/,
-          exclude: /_bg\.wasm$/,
+          test: /\/codecs\/.*\.wasm$/,
          // This is needed to make webpack NOT process wasm files.
          // See https://github.com/webpack/webpack/issues/6725
          type: 'javascript/auto',
@ -158,11 +160,6 @@ module.exports = async function (_, env) {
            name: '[name].[hash:5].[ext]',
          },
        },
-        {
-          // Wasm modules generated by Rust + wasm-pack work great with Webpack.
-          test: /_bg\.wasm$/,
-          type: 'webassembly/experimental',
-        },
        {
          test: /\.(png|svg|jpg|gif)$/,
          loader: 'file-loader',
@ -175,7 +172,7 @@ module.exports = async function (_, env) {
    plugins: [
      new webpack.IgnorePlugin(
        /(fs|crypto|path)/,
-        /[/\\]codecs[/\\]/
+        new RegExp(`${path.sep}codecs${path.sep}`)
      ),

      // Pretty progressbar showing build progress:
@ -242,7 +239,7 @@ module.exports = async function (_, env) {
          removeRedundantAttributes: true,
          removeComments: true
        },
-        manifest: require('./src/manifest.json'),
+        manifest: readJson('./src/manifest.json'),
        inject: 'body',
        compile: true
      }),
@ -268,7 +265,7 @@ module.exports = async function (_, env) {
        VERSION: JSON.stringify(VERSION),
        // We set node.process=false later in this config.
        // Here we make sure if (process && process.foo) still works:
-        process: '({})'
+        process: '{}'
      }),

      // Copying files via Webpack allows them to be served dynamically by `webpack serve`
 @ -1 +1 @@
 .16.2
 .16.0