diff --git a/lib/client-bundle-plugin.js b/lib/client-bundle-plugin.js
index 40fd6b31..06b69615 100644
--- a/lib/client-bundle-plugin.js
+++ b/lib/client-bundle-plugin.js
@@ -20,7 +20,6 @@ const allSrcPlaceholder = 'CLIENT_BUNDLE_PLUGIN_ALL_SRC';
 
 export function getDependencies(clientOutput, item) {
   const crawlDependencies = new Set([item.fileName]);
-  const referencedFiles = new Set();
 
   for (const fileName of crawlDependencies) {
     const chunk = clientOutput.find((v) => v.fileName === fileName);
@@ -28,24 +27,11 @@ export function getDependencies(clientOutput, item) {
     for (const dep of chunk.imports) {
       crawlDependencies.add(dep);
     }
-
-    for (const dep of chunk.referencedFiles) {
-      referencedFiles.add(dep);
-    }
   }
 
   // Don't add self as dependency
   crawlDependencies.delete(item.fileName);
 
-  // Merge referencedFiles as regular deps. They need to be in the same Set as
-  // some JS files might appear in both lists and need to be deduped too.
-  //
-  // Didn't do this as part of the main loop since their `chunk` can't have
-  // nested deps and sometimes might be missing altogether, depending on type.
-  for (const dep of referencedFiles) {
-    crawlDependencies.add(dep);
-  }
-
   return [...crawlDependencies];
 }
 
@@ -153,9 +139,9 @@ export default function (inputOptions, outputOptions, resolveFileUrl) {
       if (property.startsWith(allSrcPlaceholder)) {
         const allModules = [
           clientEntry,
-          ...dependencies
-            .map((name) => clientOutput.find((item) => item.fileName === name))
-            .filter((item) => item.code),
+          ...dependencies.map((name) =>
+            clientOutput.find((item) => item.fileName === name),
+          ),
         ];
 
         const inlineDefines = [
diff --git a/lib/entry-data-plugin.js b/lib/entry-data-plugin.js
index f4bc86c5..5316438e 100644
--- a/lib/entry-data-plugin.js
+++ b/lib/entry-data-plugin.js
@@ -17,14 +17,10 @@ const prefix = 'entry-data:';
 const mainNamePlaceholder = 'ENTRY_DATA_PLUGIN_MAIN_NAME';
 const dependenciesPlaceholder = 'ENTRY_DATA_PLUGIN_DEPS';
 const placeholderRe = /(ENTRY_DATA_PLUGIN_(?:MAIN_NAME|DEPS))(\d+)/g;
-
-/** @param {string} fileName */
-export function fileNameToURL(fileName) {
-  return fileName.replace(/^static\//, '/');
-}
+const filenamePrefix = 'static/';
 
 export default function entryDataPlugin() {
-  /** @type {number} */
+  /** @type {string} */
   let exportCounter;
   /** @type {Map<number, string>} */
   let counterToIdMap;
@@ -73,11 +69,15 @@ export default function entryDataPlugin() {
             if (!chunk) throw Error(`Cannot find ${id}`);
 
             if (placeholder === mainNamePlaceholder) {
-              return JSON.stringify(fileNameToURL(chunk.fileName));
+              return JSON.stringify(
+                chunk.fileName.slice(filenamePrefix.length),
+              );
             }
 
             return JSON.stringify(
-              getDependencies(chunks, chunk).map((filename) => fileNameToURL(filename)),
+              getDependencies(chunks, chunk).map((item) =>
+                item.slice(filenamePrefix.length),
+              ),
             );
           },
         );
diff --git a/missing-types.d.ts b/missing-types.d.ts
index 2adaaa15..0444a321 100644
--- a/missing-types.d.ts
+++ b/missing-types.d.ts
@@ -44,11 +44,6 @@ declare module 'data-url:*' {
   export default url;
 }
 
-declare module 'service-worker:*' {
-  const url: string;
-  export default url;
-}
-
 declare var ga: {
   (...args: any[]): void;
   q: any[];
diff --git a/package-lock.json b/package-lock.json
index 1729b2ff..fca4c250 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8976,9 +8976,9 @@
       }
     },
     "@surma/rollup-plugin-off-main-thread": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/@surma/rollup-plugin-off-main-thread/-/rollup-plugin-off-main-thread-2.2.2.tgz",
-      "integrity": "sha512-dOD6nGZ79RmWKDRQuC7SOGXMvDkkLwBogu+epfVFMKiy2kOUtLZkb8wV/ettuMt37YJAJKYCKUmxSbZL2LkUQg==",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/@surma/rollup-plugin-off-main-thread/-/rollup-plugin-off-main-thread-2.2.1.tgz",
+      "integrity": "sha512-7OU8wfyv18YPWVmecg2/0Jh+pm3lQbvPhIWHd1YQpoxPKPW/vsDNGBaCnMKsZbz29RjgCoXKugAjyagPncgdEw==",
       "dev": true,
       "requires": {
         "ejs": "^3.1.6",
@@ -15980,9 +15980,9 @@
       "dev": true
     },
     "wasm-feature-detect": {
-      "version": "1.2.11",
-      "resolved": "https://registry.npmjs.org/wasm-feature-detect/-/wasm-feature-detect-1.2.11.tgz",
-      "integrity": "sha512-HUqwaodrQGaZgz1lZaNioIkog9tkeEJjrM3eq4aUL04whXOVDRc/o2EGb/8kV0QX411iAYWEqq7fMBmJ6dKS6w=="
+      "version": "1.2.9",
+      "resolved": "https://registry.npmjs.org/wasm-feature-detect/-/wasm-feature-detect-1.2.9.tgz",
+      "integrity": "sha512-2E9/gtLVLpv2wnZDyYv8WY2dR9gHbmyv5uhZsnOcMSzqc78aGZpKQORPNcnrPwAU23nFUo7GAwKuoTAWRgsJ7Q=="
     },
     "which": {
       "version": "2.0.2",
diff --git a/package.json b/package.json
index fbc99ee4..241dfda6 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "@rollup/plugin-commonjs": "^17.0.0",
     "@rollup/plugin-node-resolve": "^11.1.0",
     "@rollup/plugin-replace": "^2.3.4",
-    "@surma/rollup-plugin-off-main-thread": "^2.2.2",
+    "@surma/rollup-plugin-off-main-thread": "^2.2.1",
     "@types/dedent": "^0.7.0",
     "@types/mime-types": "^2.1.0",
     "@types/node": "^14.14.7",
@@ -58,6 +58,6 @@
     "*.rs": "rustfmt"
   },
   "dependencies": {
-    "wasm-feature-detect": "^1.2.11"
+    "wasm-feature-detect": "^1.2.9"
   }
 }
diff --git a/rollup.config.js b/rollup.config.js
index 394b4277..8fc5a13e 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -18,7 +18,6 @@ import commonjs from '@rollup/plugin-commonjs';
 import { terser } from 'rollup-plugin-terser';
 import OMT from '@surma/rollup-plugin-off-main-thread';
 import replace from '@rollup/plugin-replace';
-import { importMetaAssets } from '@web/rollup-plugin-import-meta-assets';
 
 import simpleTS from './lib/simple-ts';
 import clientBundlePlugin from './lib/client-bundle-plugin';
@@ -32,11 +31,11 @@ import featurePlugin from './lib/feature-plugin';
 import initialCssPlugin from './lib/initial-css-plugin';
 import serviceWorkerPlugin from './lib/sw-plugin';
 import dataURLPlugin from './lib/data-url-plugin';
-import entryDataPlugin, { fileNameToURL } from './lib/entry-data-plugin';
 import dedent from 'dedent';
+import entryDataPlugin from './lib/entry-data-plugin';
 
 function resolveFileUrl({ fileName }) {
-  return JSON.stringify(fileNameToURL(fileName));
+  return JSON.stringify(fileName.replace(/^static\//, '/'));
 }
 
 function resolveImportMetaUrlInStaticBuild(property, { moduleId }) {
@@ -71,7 +70,7 @@ export default async function ({ watch }) {
 
   await del('.tmp/build');
 
-  const isProduction = !watch;
+  const isProduction = !watch && !process.env.DEBUG;
 
   const tsPluginInstance = simpleTS('.', {
     watch,
@@ -119,7 +118,6 @@ export default async function ({ watch }) {
           plugins: [
             { resolveFileUrl },
             OMT({ loader: await omtLoaderPromise }),
-            importMetaAssets(),
             serviceWorkerPlugin({
               output: 'static/serviceworker.js',
             }),
diff --git a/src/client/missing-types.d.ts b/src/client/missing-types.d.ts
index bad86b28..d25cdf43 100644
--- a/src/client/missing-types.d.ts
+++ b/src/client/missing-types.d.ts
@@ -19,4 +19,9 @@ interface Navigator {
 
 declare module 'add-css:*' {}
 
+declare module 'service-worker:*' {
+  const url: string;
+  export default url;
+}
+
 declare module 'preact/debug' {}
diff --git a/src/features/decoders/avif/worker/avifDecode.ts b/src/features/decoders/avif/worker/avifDecode.ts
index 5e70be21..acb6a252 100644
--- a/src/features/decoders/avif/worker/avifDecode.ts
+++ b/src/features/decoders/avif/worker/avifDecode.ts
@@ -11,6 +11,7 @@
  * limitations under the License.
  */
 import type { AVIFModule } from 'codecs/avif/dec/avif_dec';
+import wasmUrl from 'url:codecs/avif/dec/avif_dec.wasm';
 import { initEmscriptenModule, blobToArrayBuffer } from 'features/worker-utils';
 
 let emscriptenModule: Promise<AVIFModule>;
@@ -18,7 +19,7 @@ let emscriptenModule: Promise<AVIFModule>;
 export default async function decode(blob: Blob): Promise<ImageData> {
   if (!emscriptenModule) {
     const decoder = await import('codecs/avif/dec/avif_dec');
-    emscriptenModule = initEmscriptenModule(decoder.default);
+    emscriptenModule = initEmscriptenModule(decoder.default, wasmUrl);
   }
 
   const [module, data] = await Promise.all([
diff --git a/src/features/decoders/jxl/worker/jxlDecode.ts b/src/features/decoders/jxl/worker/jxlDecode.ts
index 6a8f96e7..1df498b9 100644
--- a/src/features/decoders/jxl/worker/jxlDecode.ts
+++ b/src/features/decoders/jxl/worker/jxlDecode.ts
@@ -11,13 +11,14 @@
  * limitations under the License.
  */
 import jxlDecoder, { JXLModule } from 'codecs/jxl/dec/jxl_dec';
+import wasmUrl from 'url:codecs/jxl/dec/jxl_dec.wasm';
 import { initEmscriptenModule, blobToArrayBuffer } from 'features/worker-utils';
 
 let emscriptenModule: Promise<JXLModule>;
 
 export default async function decode(blob: Blob): Promise<ImageData> {
   if (!emscriptenModule) {
-    emscriptenModule = initEmscriptenModule(jxlDecoder);
+    emscriptenModule = initEmscriptenModule(jxlDecoder, wasmUrl);
   }
 
   const [module, data] = await Promise.all([
diff --git a/src/features/decoders/webp/worker/webpDecode.ts b/src/features/decoders/webp/worker/webpDecode.ts
index 29bd4e43..3026be51 100644
--- a/src/features/decoders/webp/worker/webpDecode.ts
+++ b/src/features/decoders/webp/worker/webpDecode.ts
@@ -11,6 +11,7 @@
  * limitations under the License.
  */
 import type { WebPModule } from 'codecs/webp/dec/webp_dec';
+import wasmUrl from 'url:codecs/webp/dec/webp_dec.wasm';
 import { initEmscriptenModule, blobToArrayBuffer } from 'features/worker-utils';
 
 let emscriptenModule: Promise<WebPModule>;
@@ -18,7 +19,7 @@ let emscriptenModule: Promise<WebPModule>;
 export default async function decode(blob: Blob): Promise<ImageData> {
   if (!emscriptenModule) {
     const decoder = await import('codecs/webp/dec/webp_dec');
-    emscriptenModule = initEmscriptenModule(decoder.default);
+    emscriptenModule = initEmscriptenModule(decoder.default, wasmUrl);
   }
 
   const [module, data] = await Promise.all([
diff --git a/src/features/decoders/wp2/worker/wp2Decode.ts b/src/features/decoders/wp2/worker/wp2Decode.ts
index 7a37f449..a8ed56b2 100644
--- a/src/features/decoders/wp2/worker/wp2Decode.ts
+++ b/src/features/decoders/wp2/worker/wp2Decode.ts
@@ -11,13 +11,14 @@
  * limitations under the License.
  */
 import wp2Decoder, { WP2Module } from 'codecs/wp2/dec/wp2_dec';
+import wasmUrl from 'url:codecs/wp2/dec/wp2_dec.wasm';
 import { initEmscriptenModule, blobToArrayBuffer } from 'features/worker-utils';
 
 let emscriptenModule: Promise<WP2Module>;
 
 export default async function decode(blob: Blob): Promise<ImageData> {
   if (!emscriptenModule) {
-    emscriptenModule = initEmscriptenModule(wp2Decoder);
+    emscriptenModule = initEmscriptenModule(wp2Decoder, wasmUrl);
   }
 
   const [module, data] = await Promise.all([
diff --git a/src/features/encoders/avif/worker/avifEncode.ts b/src/features/encoders/avif/worker/avifEncode.ts
index 94f828b7..c5103c2b 100644
--- a/src/features/encoders/avif/worker/avifEncode.ts
+++ b/src/features/encoders/avif/worker/avifEncode.ts
@@ -12,6 +12,9 @@
  */
 import type { AVIFModule } from 'codecs/avif/enc/avif_enc';
 import type { EncodeOptions } from '../shared/meta';
+import wasmUrlWithoutMT from 'url:codecs/avif/enc/avif_enc.wasm';
+import wasmUrlWithMT from 'url:codecs/avif/enc/avif_enc_mt.wasm';
+import workerUrl from 'omt:codecs/avif/enc/avif_enc_mt.worker.js';
 import { initEmscriptenModule } from 'features/worker-utils';
 import { threads } from 'wasm-feature-detect';
 
@@ -20,10 +23,14 @@ let emscriptenModule: Promise<AVIFModule>;
 async function init() {
   if (await threads()) {
     const avifEncoder = await import('codecs/avif/enc/avif_enc_mt');
-    return initEmscriptenModule<AVIFModule>(avifEncoder.default);
+    return initEmscriptenModule<AVIFModule>(
+      avifEncoder.default,
+      wasmUrlWithMT,
+      workerUrl,
+    );
   }
   const avifEncoder = await import('codecs/avif/enc/avif_enc.js');
-  return initEmscriptenModule(avifEncoder.default);
+  return initEmscriptenModule(avifEncoder.default, wasmUrlWithoutMT);
 }
 
 export default async function encode(
diff --git a/src/features/encoders/jxl/worker/jxlEncode.ts b/src/features/encoders/jxl/worker/jxlEncode.ts
index 02a0f19c..0378c2a7 100644
--- a/src/features/encoders/jxl/worker/jxlEncode.ts
+++ b/src/features/encoders/jxl/worker/jxlEncode.ts
@@ -16,19 +16,31 @@ import type { EncodeOptions } from '../shared/meta';
 import { initEmscriptenModule } from 'features/worker-utils';
 import { threads, simd } from 'wasm-feature-detect';
 
+import wasmUrl from 'url:codecs/jxl/enc/jxl_enc.wasm';
+
+import wasmUrlWithMT from 'url:codecs/jxl/enc/jxl_enc_mt.wasm';
+import workerUrl from 'omt:codecs/jxl/enc/jxl_enc_mt.worker.js';
+
+import wasmUrlWithMTAndSIMD from 'url:codecs/jxl/enc/jxl_enc_mt_simd.wasm';
+import workerUrlWithSIMD from 'omt:codecs/jxl/enc/jxl_enc_mt_simd.worker.js';
+
 let emscriptenModule: Promise<JXLModule>;
 
 async function init() {
   if (await threads()) {
     if (await simd()) {
       const jxlEncoder = await import('codecs/jxl/enc/jxl_enc_mt_simd');
-      return initEmscriptenModule(jxlEncoder.default);
+      return initEmscriptenModule(
+        jxlEncoder.default,
+        wasmUrlWithMTAndSIMD,
+        workerUrlWithSIMD,
+      );
     }
     const jxlEncoder = await import('codecs/jxl/enc/jxl_enc_mt');
-    return initEmscriptenModule(jxlEncoder.default);
+    return initEmscriptenModule(jxlEncoder.default, wasmUrlWithMT, workerUrl);
   }
   const jxlEncoder = await import('codecs/jxl/enc/jxl_enc');
-  return initEmscriptenModule(jxlEncoder.default);
+  return initEmscriptenModule(jxlEncoder.default, wasmUrl);
 }
 
 export default async function encode(
diff --git a/src/features/encoders/mozJPEG/worker/mozjpegEncode.ts b/src/features/encoders/mozJPEG/worker/mozjpegEncode.ts
index 949999a9..4cc8b699 100644
--- a/src/features/encoders/mozJPEG/worker/mozjpegEncode.ts
+++ b/src/features/encoders/mozJPEG/worker/mozjpegEncode.ts
@@ -12,6 +12,7 @@
  */
 import mozjpeg_enc, { MozJPEGModule } from 'codecs/mozjpeg/enc/mozjpeg_enc';
 import { EncodeOptions } from '../shared/meta';
+import wasmUrl from 'url:codecs/mozjpeg/enc/mozjpeg_enc.wasm';
 import { initEmscriptenModule } from 'features/worker-utils';
 
 let emscriptenModule: Promise<MozJPEGModule>;
@@ -21,7 +22,7 @@ export default async function encode(
   options: EncodeOptions,
 ): Promise<ArrayBuffer> {
   if (!emscriptenModule) {
-    emscriptenModule = initEmscriptenModule(mozjpeg_enc);
+    emscriptenModule = initEmscriptenModule(mozjpeg_enc, wasmUrl);
   }
 
   const module = await emscriptenModule;
diff --git a/src/features/encoders/oxiPNG/worker/oxipngEncode.ts b/src/features/encoders/oxiPNG/worker/oxipngEncode.ts
index c71525ea..558f5498 100644
--- a/src/features/encoders/oxiPNG/worker/oxipngEncode.ts
+++ b/src/features/encoders/oxiPNG/worker/oxipngEncode.ts
@@ -10,27 +10,30 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import initOxiWasmST, {
+  optimise as optimiseST,
+} from 'codecs/oxipng/pkg/squoosh_oxipng';
+import initOxiWasmMT, {
+  initThreadPool,
+  optimise as optimiseMT,
+} from 'codecs/oxipng/pkg-parallel/squoosh_oxipng';
+import oxiWasmUrlST from 'url:codecs/oxipng/pkg/squoosh_oxipng_bg.wasm';
+import oxiWasmUrlMT from 'url:codecs/oxipng/pkg-parallel/squoosh_oxipng_bg.wasm';
 import { EncodeOptions } from '../shared/meta';
 import { threads } from 'wasm-feature-detect';
 
 async function initMT() {
-  const { default: init, initThreadPool, optimise } = await import(
-    'codecs/oxipng/pkg-parallel/squoosh_oxipng'
-  );
-  await init();
+  await initOxiWasmMT(oxiWasmUrlMT);
   await initThreadPool(navigator.hardwareConcurrency);
-  return optimise;
+  return optimiseMT;
 }
 
 async function initST() {
-  const { default: init, optimise } = await import(
-    'codecs/oxipng/pkg/squoosh_oxipng'
-  );
-  await init();
-  return optimise;
+  await initOxiWasmST(oxiWasmUrlST);
+  return optimiseST;
 }
 
-let wasmReady: ReturnType<typeof initMT | typeof initST>;
+let wasmReady: Promise<typeof optimiseMT | typeof optimiseST>;
 
 export default async function encode(
   data: ArrayBuffer,
diff --git a/src/features/encoders/webP/worker/webpEncode.ts b/src/features/encoders/webP/worker/webpEncode.ts
index 14d6f755..035c166d 100644
--- a/src/features/encoders/webP/worker/webpEncode.ts
+++ b/src/features/encoders/webP/worker/webpEncode.ts
@@ -16,15 +16,18 @@ import type { EncodeOptions } from '../shared/meta';
 import { initEmscriptenModule } from 'features/worker-utils';
 import { simd } from 'wasm-feature-detect';
 
+import wasmUrl from 'url:codecs/webp/enc/webp_enc.wasm';
+import wasmUrlWithSIMD from 'url:codecs/webp/enc/webp_enc_simd.wasm';
+
 let emscriptenModule: Promise<WebPModule>;
 
 async function init() {
   if (await simd()) {
     const webpEncoder = await import('codecs/webp/enc/webp_enc_simd');
-    return initEmscriptenModule(webpEncoder.default);
+    return initEmscriptenModule(webpEncoder.default, wasmUrlWithSIMD);
   }
   const webpEncoder = await import('codecs/webp/enc/webp_enc');
-  return initEmscriptenModule(webpEncoder.default);
+  return initEmscriptenModule(webpEncoder.default, wasmUrl);
 }
 
 export default async function encode(
diff --git a/src/features/encoders/wp2/worker/wp2Encode.ts b/src/features/encoders/wp2/worker/wp2Encode.ts
index f6d9c0fd..1c12573b 100644
--- a/src/features/encoders/wp2/worker/wp2Encode.ts
+++ b/src/features/encoders/wp2/worker/wp2Encode.ts
@@ -16,19 +16,31 @@ import type { EncodeOptions } from '../shared/meta';
 import { initEmscriptenModule } from 'features/worker-utils';
 import { threads, simd } from 'wasm-feature-detect';
 
+import wasmUrl from 'url:codecs/wp2/enc/wp2_enc.wasm';
+
+import wasmUrlWithMT from 'url:codecs/wp2/enc/wp2_enc_mt.wasm';
+import workerUrl from 'omt:codecs/wp2/enc/wp2_enc_mt.worker.js';
+
+import wasmUrlWithMTAndSIMD from 'url:codecs/wp2/enc/wp2_enc_mt_simd.wasm';
+import workerUrlWithSIMD from 'omt:codecs/wp2/enc/wp2_enc_mt_simd.worker.js';
+
 let emscriptenModule: Promise<WP2Module>;
 
 async function init() {
   if (await threads()) {
     if (await simd()) {
       const wp2Encoder = await import('codecs/wp2/enc/wp2_enc_mt_simd');
-      return initEmscriptenModule(wp2Encoder.default);
+      return initEmscriptenModule(
+        wp2Encoder.default,
+        wasmUrlWithMTAndSIMD,
+        workerUrlWithSIMD,
+      );
     }
     const wp2Encoder = await import('codecs/wp2/enc/wp2_enc_mt');
-    return initEmscriptenModule(wp2Encoder.default);
+    return initEmscriptenModule(wp2Encoder.default, wasmUrlWithMT, workerUrl);
   }
   const wp2Encoder = await import('codecs/wp2/enc/wp2_enc');
-  return initEmscriptenModule(wp2Encoder.default);
+  return initEmscriptenModule(wp2Encoder.default, wasmUrl);
 }
 
 export default async function encode(
diff --git a/src/features/processors/quantize/worker/quantize.ts b/src/features/processors/quantize/worker/quantize.ts
index 009e360e..c62c02ee 100644
--- a/src/features/processors/quantize/worker/quantize.ts
+++ b/src/features/processors/quantize/worker/quantize.ts
@@ -11,6 +11,7 @@
  * limitations under the License.
  */
 import imagequant, { QuantizerModule } from 'codecs/imagequant/imagequant';
+import wasmUrl from 'url:codecs/imagequant/imagequant.wasm';
 import { initEmscriptenModule } from 'features/worker-utils';
 import { Options } from '../shared/meta';
 
@@ -21,7 +22,7 @@ export default async function process(
   opts: Options,
 ): Promise<ImageData> {
   if (!emscriptenModule) {
-    emscriptenModule = initEmscriptenModule(imagequant);
+    emscriptenModule = initEmscriptenModule(imagequant, wasmUrl);
   }
 
   const module = await emscriptenModule;
diff --git a/src/features/processors/resize/worker/resize.ts b/src/features/processors/resize/worker/resize.ts
index dc6c8338..72fc8ab8 100644
--- a/src/features/processors/resize/worker/resize.ts
+++ b/src/features/processors/resize/worker/resize.ts
@@ -1,6 +1,8 @@
 import type { WorkerResizeOptions } from '../shared/meta';
 import { getContainOffsets } from '../shared/util';
 import initResizeWasm, { resize as wasmResize } from 'codecs/resize/pkg';
+import resizeWasmUrl from 'url:codecs/resize/pkg/squoosh_resize_bg.wasm';
+import hqxWasmUrl from 'url:codecs/hqx/pkg/squooshhqx_bg.wasm';
 import initHqxWasm, { resize as wasmHqx } from 'codecs/hqx/pkg';
 
 interface HqxResizeOptions extends WorkerResizeOptions {
@@ -61,7 +63,7 @@ async function hqx(
   opts: HqxResizeOptions,
 ): Promise<ImageData> {
   if (!hqxWasmReady) {
-    hqxWasmReady = initHqxWasm();
+    hqxWasmReady = initHqxWasm(hqxWasmUrl);
   }
 
   await hqxWasmReady;
@@ -94,7 +96,7 @@ export default async function resize(
   let input = data;
 
   if (!resizeWasmReady) {
-    resizeWasmReady = initResizeWasm();
+    resizeWasmReady = initResizeWasm(resizeWasmUrl);
   }
 
   if (optsIsHqxOpts(opts)) {
diff --git a/src/features/worker-utils/index.ts b/src/features/worker-utils/index.ts
index 72113d95..793758c5 100644
--- a/src/features/worker-utils/index.ts
+++ b/src/features/worker-utils/index.ts
@@ -10,12 +10,38 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-export function initEmscriptenModule<T extends EmscriptenWasm.Module>(
+
+// @ts-ignore
+self.asm = ''; // lol
+// @ts-ignore
+self.UTF32ToString = (...v) => console.log("u322s", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+// @ts-ignore
+self.stringToUTF32 = (...v) => console.log("s2u32", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+// @ts-ignore
+self.lengthBytesUTF32 = (...v) => console.log("lb32", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+// @ts-ignore
+self.UTF16ToString = (...v) => console.log("u162s", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+// @ts-ignore
+self.stringToUTF16 = (...v) => console.log("s2u16", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+// @ts-ignore
+self.lengthBytesUTF16 = (...v) => console.log("lb16", v); //v => [...new Uint32Array(v)].map(v => String.fromCharCode(v)).join("")
+export async function initEmscriptenModule<T extends EmscriptenWasm.Module>(
   moduleFactory: EmscriptenWasm.ModuleFactory<T>,
+  wasmUrl: string,
+  workerUrl?: string,
 ): Promise<T> {
   return moduleFactory({
+    // @ts-ignore
+    wasm: await fetch(wasmUrl).then(r => r.arrayBuffer()),
     // Just to be safe, don't automatically invoke any wasm functions
     noInitialRun: true,
+    locateFile: (url: string) => {
+      // This is probably unused?
+      console.log("CALL TO LOCATEFILE", url);
+      if (url.endsWith('.wasm')) return wasmUrl;
+      if (url.endsWith('.worker.js')) return workerUrl!;
+      throw Error('Unknown url in locateFile ' + url);
+    },
   });
 }
 
diff --git a/src/sw/index.ts b/src/sw/index.ts
index 266f2c55..66ca403a 100644
--- a/src/sw/index.ts
+++ b/src/sw/index.ts
@@ -7,7 +7,6 @@ import {
   serveShareTarget,
 } from './util';
 import { get } from 'idb-keyval';
-import { shouldCacheDynamically } from './to-cache';
 
 // Give TypeScript the correct global.
 declare var self: ServiceWorkerGlobalScope;
@@ -71,7 +70,7 @@ self.addEventListener('fetch', (event) => {
   // We only care about GET from here on in.
   if (event.request.method !== 'GET') return;
 
-  if (shouldCacheDynamically(url.pathname)) {
+  if (url.pathname.startsWith('/c/demo-')) {
     cacheOrNetworkAndCache(event, dynamicCache);
     cleanupCache(event, dynamicCache, ASSETS);
     return;
diff --git a/src/sw/to-cache.ts b/src/sw/to-cache.ts
index bad10ef0..cbc922f5 100644
--- a/src/sw/to-cache.ts
+++ b/src/sw/to-cache.ts
@@ -13,46 +13,18 @@ function subtractSets<T extends any>(set1: Set<T>, set2: Set<T>): Set<T> {
 
 // Initial app stuff
 import * as initialApp from 'entry-data:client/initial-app';
-import swUrl from 'service-worker:sw';
 import * as compress from 'entry-data:client/lazy-app/Compress';
 import * as swBridge from 'entry-data:client/lazy-app/sw-bridge';
 import * as blobAnim from 'entry-data:shared/prerendered-app/Intro/blob-anim';
+import logo from 'url:shared/prerendered-app/Intro/imgs/logo.svg';
+import githubLogo from 'url:shared/prerendered-app/Intro/imgs/github-logo.svg';
+import largePhotoIcon from 'url:shared/prerendered-app/Intro/imgs/demos/icon-demo-large-photo.jpg';
+import artworkIcon from 'url:shared/prerendered-app/Intro/imgs/demos/icon-demo-artwork.jpg';
+import deviceScreenIcon from 'url:shared/prerendered-app/Intro/imgs/demos/icon-demo-device-screen.jpg';
+import logoIcon from 'url:shared/prerendered-app/Intro/imgs/demos/icon-demo-logo.png';
+import logoWithText from 'url:shared/prerendered-app/Intro/imgs/logo-with-text.svg';
 
-// The processors and codecs
-// Simple stuff everyone gets:
-import * as featuresWorker from 'entry-data:../features-worker';
-
-// Decoders (some are feature detected)
-import * as avifDec from 'entry-data:codecs/avif/dec/avif_dec';
-import * as webpDec from 'entry-data:codecs/webp/dec/webp_dec';
-
-// AVIF
-import * as avifEncMt from 'entry-data:codecs/avif/enc/avif_enc_mt';
-import * as avifEnc from 'entry-data:codecs/avif/enc/avif_enc';
-
-// JXL
-import * as jxlEncMtSimd from 'entry-data:codecs/jxl/enc/jxl_enc_mt_simd';
-import * as jxlEncMt from 'entry-data:codecs/jxl/enc/jxl_enc_mt';
-import * as jxlEnc from 'entry-data:codecs/jxl/enc/jxl_enc';
-
-// OXI
-import * as oxiMt from 'entry-data:codecs/oxipng/pkg-parallel/squoosh_oxipng';
-import * as oxi from 'entry-data:codecs/oxipng/pkg/squoosh_oxipng';
-
-// WebP
-import * as webpEncSimd from 'entry-data:codecs/webp/enc/webp_enc_simd';
-import * as webpEnc from 'entry-data:codecs/webp/enc/webp_enc';
-
-// WP2
-import * as wp2EncMtSimd from 'entry-data:codecs/wp2/enc/wp2_enc_mt_simd';
-import * as wp2EncMt from 'entry-data:codecs/wp2/enc/wp2_enc_mt';
-import * as wp2Enc from 'entry-data:codecs/wp2/enc/wp2_enc';
-
-export function shouldCacheDynamically(url: string) {
-  return url.startsWith('/c/demo-');
-}
-
-let initialJs = new Set([
+let initalJs = new Set([
   compress.main,
   ...compress.deps,
   swBridge.main,
@@ -60,26 +32,77 @@ let initialJs = new Set([
   blobAnim.main,
   ...blobAnim.deps,
 ]);
-initialJs = subtractSets(
-  initialJs,
-  new Set([
-    initialApp.main,
-    ...initialApp.deps.filter(
-      (item) =>
-        // Exclude JS deps that have been inlined:
-        item.endsWith('.js') ||
-        // As well as large image deps we want to keep dynamic:
-        shouldCacheDynamically(item),
-    ),
-    // Exclude features Worker itself - it's referenced from the main app,
-    // but is meant to be cached lazily.
-    featuresWorker.main,
-    // Also exclude Service Worker itself (we're inside right now).
-    swUrl,
-  ]),
+// But initial app and any deps have already been inlined, so we don't need them:
+initalJs = subtractSets(
+  initalJs,
+  new Set([initialApp.main, ...initialApp.deps]),
 );
 
-export const initial = ['/', ...initialJs];
+export const initial = [
+  '/',
+  ...initalJs,
+  logo,
+  githubLogo,
+  largePhotoIcon,
+  artworkIcon,
+  deviceScreenIcon,
+  logoIcon,
+  logoWithText,
+];
+
+// The processors and codecs
+// Simple stuff everyone gets:
+import * as featuresWorker from 'entry-data:../features-worker';
+import rotateWasm from 'url:codecs/rotate/rotate.wasm';
+import quantWasm from 'url:codecs/imagequant/imagequant.wasm';
+import resizeWasm from 'url:codecs/resize/pkg/squoosh_resize_bg.wasm';
+import hqxWasm from 'url:codecs/hqx/pkg/squooshhqx_bg.wasm';
+import mozjpegWasm from 'url:codecs/mozjpeg/enc/mozjpeg_enc.wasm';
+
+// Decoders (some are feature detected)
+import * as avifDec from 'entry-data:codecs/avif/dec/avif_dec';
+import avifDecWasm from 'url:codecs/avif/dec/avif_dec.wasm';
+import jxlDecWasm from 'url:codecs/jxl/dec/jxl_dec.wasm';
+import * as webpDec from 'entry-data:codecs/webp/dec/webp_dec';
+import webpDecWasm from 'url:codecs/webp/dec/webp_dec.wasm';
+import wp2DecWasm from 'url:codecs/wp2/dec/wp2_dec.wasm';
+
+// AVIF
+import * as avifEncMtWorker from 'entry-data:codecs/avif/enc/avif_enc_mt.worker.js';
+import * as avifEncMt from 'entry-data:codecs/avif/enc/avif_enc_mt';
+import avifEncMtWasm from 'url:codecs/avif/enc/avif_enc_mt.wasm';
+import avifEncWasm from 'url:codecs/avif/enc/avif_enc.wasm';
+import * as avifEnc from 'entry-data:codecs/avif/enc/avif_enc.js';
+
+// JXL
+import * as jxlEncMtSimdWorker from 'entry-data:codecs/jxl/enc/jxl_enc_mt_simd.worker.js';
+import * as jxlEncMtSimd from 'entry-data:codecs/jxl/enc/jxl_enc_mt_simd';
+import jxlEncMtSimdWasm from 'url:codecs/jxl/enc/jxl_enc_mt_simd.wasm';
+import * as jxlEncMtWorker from 'entry-data:codecs/jxl/enc/jxl_enc_mt.worker.js';
+import * as jxlEncMt from 'entry-data:codecs/jxl/enc/jxl_enc_mt';
+import jxlEncMtWasm from 'url:codecs/jxl/enc/jxl_enc_mt.wasm';
+import jxlEncWasm from 'url:codecs/jxl/enc/jxl_enc.wasm';
+import * as jxlEnc from 'entry-data:codecs/jxl/enc/jxl_enc';
+
+// OXI
+import oxiMtWasm from 'url:codecs/oxipng/pkg-parallel/squoosh_oxipng_bg.wasm';
+import oxiWasm from 'url:codecs/oxipng/pkg/squoosh_oxipng_bg.wasm';
+
+// WebP
+import * as webpEncSimd from 'entry-data:codecs/webp/enc/webp_enc_simd';
+import webpEncSimdWasm from 'url:codecs/webp/enc/webp_enc_simd.wasm';
+import * as webpEnc from 'entry-data:codecs/webp/enc/webp_enc';
+import webpEncWasm from 'url:codecs/webp/enc/webp_enc.wasm';
+
+// WP2
+import * as wp2EncMtSimdWorker from 'entry-data:codecs/wp2/enc/wp2_enc_mt_simd.worker.js';
+import * as wp2EncMtSimd from 'entry-data:codecs/wp2/enc/wp2_enc_mt_simd';
+import wp2EncMtSimdWasm from 'url:codecs/wp2/enc/wp2_enc_mt_simd.wasm';
+import * as wp2EncMtWorker from 'entry-data:codecs/wp2/enc/wp2_enc_mt.worker.js';
+import * as wp2EncMt from 'entry-data:codecs/wp2/enc/wp2_enc_mt';
+import wp2EncMtWasm from 'url:codecs/wp2/enc/wp2_enc_mt.wasm';
+import * as wp2Enc from 'entry-data:codecs/wp2/enc/wp2_enc';
+import wp2EncWasm from 'url:codecs/wp2/enc/wp2_enc.wasm';
 
 export const theRest = (async () => {
   const [
@@ -101,54 +124,88 @@ export const theRest = (async () => {
     }),
   ]);
 
-  const items: string[] = [];
+  const items = [
+    featuresWorker.main,
+    ...featuresWorker.deps,
+    rotateWasm,
+    quantWasm,
+    resizeWasm,
+    hqxWasm,
+    mozjpegWasm,
+    jxlDecWasm,
+    wp2DecWasm,
+  ];
 
-  function addWithDeps(entry: typeof import('entry-data:*')) {
-    items.push(entry.main, ...entry.deps);
-  }
-
-  addWithDeps(featuresWorker);
-
-  if (!supportsAvif) addWithDeps(avifDec);
-  if (!supportsWebP) addWithDeps(webpDec);
+  if (!supportsAvif) items.push(avifDec.main, ...avifDec.deps, avifDecWasm);
+  if (!supportsWebP) items.push(webpDec.main, ...webpDec.deps, webpDecWasm);
 
   // AVIF
   if (supportsThreads) {
-    addWithDeps(avifEncMt);
+    items.push(
+      avifEncMtWorker.main,
+      ...avifEncMtWorker.deps,
+      avifEncMt.main,
+      ...avifEncMt.deps,
+      avifEncMtWasm,
+    );
   } else {
-    addWithDeps(avifEnc);
+    items.push(avifEnc.main, ...avifEnc.deps, avifEncWasm);
   }
 
   // JXL
   if (supportsThreads && supportsSimd) {
-    addWithDeps(jxlEncMtSimd);
+    items.push(
+      jxlEncMtSimdWorker.main,
+      ...jxlEncMtSimdWorker.deps,
+      jxlEncMtSimd.main,
+      ...jxlEncMtSimd.deps,
+      jxlEncMtSimdWasm,
+    );
   } else if (supportsThreads) {
-    addWithDeps(jxlEncMt);
+    items.push(
+      jxlEncMtWorker.main,
+      ...jxlEncMtWorker.deps,
+      jxlEncMt.main,
+      ...jxlEncMt.deps,
+      jxlEncMtWasm,
+    );
   } else {
-    addWithDeps(jxlEnc);
+    items.push(jxlEnc.main, ...jxlEnc.deps, jxlEncWasm);
   }
 
   // OXI
   if (supportsThreads) {
-    addWithDeps(oxiMt);
+    items.push(oxiMtWasm);
   } else {
-    addWithDeps(oxi);
+    items.push(oxiWasm);
   }
 
   // WebP
   if (supportsSimd) {
-    addWithDeps(webpEncSimd);
+    items.push(webpEncSimd.main, ...webpEncSimd.deps, webpEncSimdWasm);
   } else {
-    addWithDeps(webpEnc);
+    items.push(webpEnc.main, ...webpEnc.deps, webpEncWasm);
   }
 
   // WP2
   if (supportsThreads && supportsSimd) {
-    addWithDeps(wp2EncMtSimd);
+    items.push(
+      wp2EncMtSimdWorker.main,
+      ...wp2EncMtSimdWorker.deps,
+      wp2EncMtSimd.main,
+      ...wp2EncMtSimd.deps,
+      wp2EncMtSimdWasm,
+    );
   } else if (supportsThreads) {
-    addWithDeps(wp2EncMt);
+    items.push(
+      wp2EncMtWorker.main,
+      ...wp2EncMtWorker.deps,
+      wp2EncMt.main,
+      ...wp2EncMt.deps,
+      wp2EncMtWasm,
+    );
   } else {
-    addWithDeps(wp2Enc);
+    items.push(wp2Enc.main, ...wp2Enc.deps, wp2EncWasm);
   }
 
   return [...new Set(items)];