WeChat Client Technology Team
Oct 12, 2015 · Mobile Development
How Android Resource Obfuscation Shrinks APK Size: Techniques & Implementation
This article explains how WeChat's resource obfuscation tool, AndResGuard, renames and compresses Android resources, modifies the resources.arsc binary, and combines 7‑zip compression to reduce APK size by about 1 MB while increasing anti‑tampering difficulty.
7z compressionAPK size reductionAndResGuard
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