Is my bundle uploaded anywhere?

No. The .aab is unpacked and decoded entirely in your browser.

Why does the manifest look different from an APK's?

A bundle stores AndroidManifest.xml as aapt2 protobuf rather than Android binary XML. This tool decodes that format back into readable XML.

Can it tell me the download size on Play?

Not exactly. Play generates per-device APKs from the bundle, so the module breakdown here is an upper bound, not the final download size.

Does it show feature modules and asset packs?

Yes. Every top-level module is listed with its type and a code, resource, asset and native library size split.

Can I read the signing certificate?

Bundles are signed with a JAR signature; use the Keystore SHA-1 / SHA-256 Extractor or APK Certificate Inspector for certificate fingerprints.

What is the file size limit?

Up to 500 MB, limited only by your device's memory.

AAB (Android App Bundle) Analyzer

Open an .aab file and inspect its manifest, modules, ABIs, densities and size breakdown.

Support

No Login

No API

File API

Android App Bundle

Unpacked in your browser — the file is never uploaded.

Drop a file here

Drop an .aab file — decoding happens locally, up to 500 MB

About the AAB (Android App Bundle) Analyzer

Drop an Android App Bundle (.aab) and see inside it without bundletool or Android Studio. The tool unpacks the archive locally, decodes the protobuf AndroidManifest.xml that aapt2 writes into a bundle, and reports the package name, version name and code, min and target SDK, permissions and activities. It also breaks the bundle down by module — base module, feature modules and asset packs — with the code, resource, asset and native library size of each, plus the native ABIs, screen densities and languages the bundle ships. Browse every entry in the archive, preview text and images, and export a JSON report. Nothing is uploaded.

Examples

Inspect a release bundle

app-release.aab

Output

base + 2 feature modules, 4 ABIs, 38 languages

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

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Version 1.0.0 · Updated 2026-09-16 · Runs entirely in your browser