Build Size Gate — CI Check for Build Size Regressions
HanoStudio
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Fail CI when your build grows past a committed baseline. Editor window + headless gate, three size metrics, and an artifact-level diff that shows which packaged files actually grew.Every team has shipped this bug: the build was 40 MB last release, and somehow it's 55 MB now. Nobody noticed, because nobody was watching every merge.Build Size Gate watches every merge.It compares each build against a small, versioned JSON baseline and fails CI (non-zero exit code) when the build grows past your thresholds — absolute bytes or percent, warn or fail, per metric.BUILT ON PUBLISHED, REPRODUCIBLE MEASUREMENTSThis tool came out of a public experiment series: 16 Android APKs, one variable changed at a time, every number published with raw data and a reproducible project. The methodology — and its open-source measurement engine — is documented at hellohanostudio.github.io.THREE METRICS, NOT ONE"Build size" is not one number. The gate checks three:• artifact bytes — the file users download• BuildReport total size — Unity's reported output• packed asset bytes — serialized asset dataAn APK can be stable while assets move, and assets can be stable while generated code grows. Gating all three catches both.THE WINDOW (Tools ▸ Build Size Gate ▸ Open Window)• Gate — run the check in the Editor: PASS/WARN/FAIL banner, per-metric deltas with reasons, and one-click "Approve Current Build" when growth is intentional.• Baselines — capture a baseline from any build summary and edit thresholds in plain fields. No hand-edited JSON.• Layers — compare two APK/AAB files entry by entry and see exactly which packaged files grew (libil2cpp.so, global-metadata.dat — the growth asset reports cannot attribute). Export CSV.• CI Setup — generates a ready-to-run shell command and a GitHub Actions workflow with your paths filled in.WORKS OUT OF THE BOXA sample baseline and build summary are included — open the window and see a real check pass in under a minute, before your first build. After that: build once, capture, commit the JSON, done.HONEST SCOPE (v1)Built and validated on Android APK builds with Unity 6000.3 (IL2CPP/ARM64). The gate itself is platform-agnostic and reads a plain-text summary; iOS and AAB validation is on the roadmap. Editor-only — nothing ships in your player build.Support: hellohanostudio@gmail.com- CI gate with exit codes: 0 pass, 1 fail, 2 missing baseline, 3 invalid input- Versioned JSON baselines, reviewable in pull requests- Absolute (bytes) and relative (%) thresholds; warn and fail levels per metric- Three gated metrics: artifact bytes, BuildReport totalSize, packed asset bytes- Editor window: run checks, capture/edit/approve baselines- Layers view: entry-level APK/AAB diff with CSV export- GitHub Actions workflow + shell command generator- Automatic post-build summary reporter (IPostprocessBuildWithReport)- Headless batchmode CLI (-executeMethod), self-tested (pass/warn/fail/missing)- Editor-only; zero runtime footprint- Validated on Unity 6000.3, Android APK (IL2CPP/ARM64)
