gittool.org

Free developer tool

Conventional Commit Validator

Check a commit message for Conventional Commits syntax and common readability problems.

Runs locally in your browser
Validation result
Enter a message to begin.

What this validator checks

The first line must use type(optional-scope): description. An exclamation mark before the colon may mark a breaking change. The tool also warns about an empty description, excessive subject length, final punctuation, and a missing BREAKING CHANGE: footer when the breaking marker is used.

Examples

fix(auth): handle expired refresh token
feat(api)!: remove legacy response fields

The specification permits custom types, but many teams restrict them. This validator uses the common set shown in the Commit Message Generator.