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Decompile & reverse engineering
APK Decompiler Online
Decompile an APK back into readable Java and Kotlin-style source and resources so you can understand how an app is built.
APK Decompiler Online is part of APKLint, an online toolkit for inspecting Android APK files. Decompile an APK back into readable Java and Kotlin-style source and resources so you can understand how an app is built. Upload an APK in your browser to view the relevant details; results reflect what the file itself exposes.
Drop your file here
or click to choose from your device
Accepts: .APK · up to 1 GB
Deleted after your scan. Files you upload are processed on our servers over an encrypted connection, then removed by the next hourly cleanup after analysis finishes (long scans are protected while they run). We never share them, and need no account.
About APK Decompiler Online
Decompile an APK back into readable Java and Kotlin-style source and resources so you can understand how an app is built.
APK Decompiler Online is part of APKLint’s decompile & reverse engineering toolkit — Turn a built app back into readable code and resources. It’s free to use and needs no account.
Your privacy is the default: files you upload are processed on our servers over an encrypted connection and permanently deleted by a scheduled hourly cleanup after analysis finishes, and never shared.
What APK Decompiler Online checks
- Converts DEX bytecode to readable Java-like source with jadx
- Recovers package, class, and method structure
- Extracts resources and the decoded manifest
- Bundles the recovered sources into a downloadable ZIP
Good to know: Output quality depends on obfuscation — heavily R8/ProGuard-shrunk apps decompile to short, renamed symbols.
When to use APK Decompiler Online
- Best for
- Recovering readable Java/Kotlin-style source from an APK's DEX with jadx, when you want to read logic, not just resources.
- Not the right tool for
- Not for smali/resource-only decode (use apktool) and not for .aab inputs.
- What you get back
- Decompiled Java-like source plus extracted resources you can browse.
- How it differs from related APKLint tools
- apktool gives smali and decoded resources; the DEX/Smali Analyzer focuses on raw DEX/JAR; this tool aims for the highest-level, most readable source.
- Limitations
- Output quality drops on heavily R8/ProGuard-obfuscated apps, expect renamed classes and methods.
How to use APK Decompiler Online
- Choose your APK file — Drop an .apk file onto the page, or click to select it from your device.
- Send securely — The file is uploaded over an encrypted connection to our analysis servers.
- Read your report — APKLint unpacks and inspects the package and lays out the results on screen.
- Your file is removed — It's deleted by an hourly cleanup job after analysis finishes.
Why use APKLint
Always free
Every tool is free with no login and no paywall. Reasonable file and input limits keep the free service stable.
No on-page ad banners
A clean, focused interface with no third-party ad banners cluttering your results.
Privacy-first
Files you upload are deleted by a scheduled hourly cleanup after analysis finishes, and never shared.
Open-source engines
Built on jadx and apktool for decompiling and disassembly.
No sign-up
Start immediately — no account, login, or email required.
Works anywhere
Runs in any modern browser, on desktop or mobile.
Frequently asked questions
What does APK Decompiler Online do?
Decompile an APK back into readable Java and Kotlin-style source and resources so you can understand how an app is built.
Will it work on an obfuscated app?
Partly. jadx still recovers structure, but obfuscated apps show renamed classes/methods. Check the ProGuard/R8 Obfuscation Checker to see how obfuscated an APK is.
Is it free to use?
Yes. Every tool on APKLint is completely free, with no sign-up and no account.
How is my data handled?
Your uploaded file and its result are processed on our servers over an encrypted connection, then removed by the next hourly cleanup after analysis finishes. We never share them.
What files can I send?
An Android APK — a .apk file — up to 1 GB.
Related tools
All product names, logos, and trademarks are property of their respective owners. APKLint is an independent toolset and is not affiliated with, endorsed by, or sponsored by Google, Android, or any other party.