Summary
If you're shipping Android apps and haven't audited your ProGuard rules in a while, this will save you real APK bytes. It checks your R8 configuration against known redundancies, flags overly broad package-wide keeps, and identifies rules that libraries already handle themselves. On newer R8 versions (9.3.7-dev+), it generates quantitative impact metrics by actually running the configuration analyzer and scoring each rule. On older versions, it falls back to heuristic checks against reference lists. The output is a structured markdown report with specific rules to remove or refine. Built by Google, so the reference data on what's actually redundant is authoritative. Worth running before every major release if app size matters to you.
Install to Claude Code
npx -y skills add android/skills --skill r8-analyzer --agent claude-codeInstalls into .claude/skills of the current project.
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →An agent that runs the SEO playbooks that move rankings and ships PRs you control.
Get founding access →Connect Claude to +800M contacts, +150M companies. Find & Enrich leads in chat.
Try For Free →
