Diff → Conventional Commit Helper

Paste a git diff to auto-suggest type/scope and generate a Conventional Commits message template. 50-char subject check, BREAKING CHANGE detection, plus a ready-to-paste AI prompt.

100% Free No signup Browser-only 5 languages Dark mode

Need prompt templates (PR desc, code review, etc.)? 📚 Prompt Library →

git diff

📋 How to capture diff

# 全変更
git diff

# stage 済み
git diff --cached

# 特定コミット
git show abc123

# ファイル名だけ (大きすぎる時)
git diff --stat

Files changed

Added / removed

+0 / -0

Suggested type

Suggested scope

Commit message template

0 chars (subject) — 50 recommended / 72 max

AI prompt (ask for refined message)

❓ FAQ

How is type detected?

From file paths/extensions: .test.* → test, docs/ → docs, mostly new files → feat, mostly deletions → refactor

Need AI?

No — template alone is commit-ready. The AI prompt is optional for refinement

🐛 Found a bug or issue with this tool?

Free to use, no signup. Even just the steps to reproduce are helpful. Reports go directly to the operator and help us fix issues.

Diff → Conventional Commit Helper

❓ FAQ

Thanks for your report!