DevOps Tool
Client-Side Only
Regex Tester
Test and debug regular expressions with live matching, group extraction, and replacement preview.
Regular Expression
/ /
Test String
Replace Mode
Use $1, $2, etc. for captured groups. $& for full match.
Privacy Guarantee
- All regex testing happens locally in your browser
- No data is sent to any server or stored anywhere
- No network requests are made during testing
- Source code is fully inspectable in your browser's developer tools