DexCompare — web version

Runs the desktop dex-compare tool (https://github.com/ShuhaibNC/dex-compare, v1.1.0) entirely in the browser at /dexcompare/. Pick two APK / XAPK / APKS / APKM / ZIP / DEX files and compare them: class, method and field diffs with Smali detail, same theme as the desktop app. Files are read locally and compared in a Web Worker — nothing is uploaded.

How it was ported

The desktop app is Electron + Node. The engine (lib/) is the same code, converted from CommonJS to ES modules with three changes:

• lib/buf.js (new): a Uint8Array subclass providing the few Node Buffer read helpers the engine uses.
• lib/zip.js: zlib.inflateRawSync replaced by async DecompressionStream("deflate-raw"), so zip extraction is async.
• lib/dex.js: catch-handler list size is read as SLEB128, as the DEX spec requires (desktop JS reads ULEB128 — same fix as the Android port).
• lib/dexset.js / lib/compare.js: fs/path removed; loading works from in-memory buffers (compareBuffers, loadSideFromBuffer).

renderer.js is the desktop UI logic with file picking changed from Electron dialogs to <input type="file"> + drag & drop; bridge.js implements the window.dexapi interface the renderer expects, backed by worker.js (module Web Worker). styles.css is the desktop theme plus a mobile layout.

Regenerating

Transform scripts + parity tests live in the DexCompare goal workspace (goals/dexcompare-android-app/hidden_files/web-port/): transform.py (lib), transform_ui.py (renderer/index/styles), parity.mjs (engine vs desktop CLI), worker_test.mjs (worker protocol).

Verification (2026-11-06)

Web engine output is byte-for-byte identical to the desktop CLI (node cli.js) on: IPFinder v1.4 vs v1.5, Counter v1.0 vs CounterPro v2.0, MorpheLite r2 vs MorpheClone dev.5 (28,323 classes), raw classes.dex vs its APK, and a synthetic .apks bundle. The worker protocol (compare + progress + methodSmali/classSmali) was tested through the real worker.js. A live click-through in a real browser could not be run from this sandbox (the test browser cannot reach localhost) — first live test happens on the published page.

Also linked here: DexCompare-v1.1.0.apk (Android app, v1.1.0).