All free toolsDeveloper tool · 100% free
Regex Tester
Test a regular expression against sample text and inspect matches, groups, indexes and replacement output locally.
Built for: regex tester
Runs on your deviceFree · no signup
Included in this tool
Match listCapture groupsFlagsReplacement preview
What this tool includes
Everything you need, without a paywall.
Match list
Capture groups
Flags
Replacement preview
This tool is free, needs no account, and adds no watermark to your result. Text operations run on your device where the browser can do the work safely; file conversions run on the server and your upload is deleted as soon as your download finishes.