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Regex Tester

Regex Tester

Runs in your browserLocal

Try a regular expression against sample text and watch every match and capture group highlight as you type.

.gitattributes Generator

Generate a .gitattributes file for line endings, binary files, Git LFS, GitHub linguist, export-ignore and language-aware diffs.

SemVer Calculator

Validate, compare, sort and bump semantic versions, and check whether a version satisfies an npm range.