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The guide shows how to shrink a Baidu iOS app by converting PNGs to HEIC within Asset Catalogs—leveraging Xcode’s actool for compression, avoiding pngquant‑induced alpha issues, and employing combined static LinkMap/Mach‑O parsing and runtime isa‑flag checks to prune never‑instantiated classes.
The article details Baidu’s iOS bundle‑size reduction strategy by converting PNG/JPG assets to HEIC using macOS tools or ImageMagick, storing them in Asset Catalogs for iOS 10+ compatibility, handling alpha‑channel quirks, and employing combined static‑link‑map and runtime class‑initialization analysis to safely prune unused Objective‑C classes.
WBBlades is an open‑source iOS toolset that parses Mach‑O files to provide size analysis, high‑precision unused‑class detection, and crash‑log symbolization without requiring symbol tables, offering both a macOS GUI and command‑line interface for developers to optimize and debug their apps.