Tools / Dev
Regex Lab
Live highlight, groups, replace, recipes, flags. Free, runs entirely in your browser—nothing is uploaded.
What you can do
- Live highlight
- Groups
- Replace
- Recipes
- Flags
Private by design
Regex Lab runs entirely in your browser. Your input is never uploaded, there is no sign-up, and the tool keeps working offline after the first visit.
Related tools
- Text Utilities — Text stats, case and line tools, extractors, log redaction, my links.
- Diff & Compare — Line/word compare, list diff, unified patch, files.