Online Zipalign Checker - APK Alignment Verification Free

📋 Zipalign Tool

Check APK alignment for optimal Android performance

✓ 4-Byte Alignment ✓ Page Alignment ✓ Misaligned Files ✓ APK v4 Check

About Zipalign

Zipalign is an archive alignment tool that optimizes APK files for Android:

📋 4-Byte Alignment

Ensures uncompressed data within the APK is aligned on 4-byte boundaries for efficient mmap access

⚡ Performance

Properly aligned APKs use less RAM at runtime as resources can be memory-mapped directly

📄 Page Alignment

Android 11+ requires page-aligned shared libraries for APK Signature Scheme v4

🔗 Build Integration

Android Studio and Gradle automatically zipalign release builds

💻 Command Line Usage:

# Check alignment
zipalign -c -v 4 your_app.apk

# Align an APK
zipalign -v 4 input.apk output.apk

# Page-align for v4 signature (Android 11+)
zipalign -p -v 4 input.apk output.apk

Encoding and Data Utilities

Encode, decode, measure sizes, and transform common formats.

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