Regex Tester
Test regular expressions against any text. Configure flags, see all matches with their capture groups, and preview a replacement string. Pure native RegExp, runs in your browser.
Processed in your browser · No upload
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Regex evaluation runs entirely in your browser using the native RegExp engine. Nothing is uploaded.
FAQ
- Is my input sent to a server?
- No. The regex is compiled and executed entirely in your browser.
- What flags are supported?
- The standard JavaScript flags: g, i, m, s, u, y. Combine them as needed (e.g. gim).
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