Regex & strings

Test, build and escape regex patterns and strings with live highlighting.

4 tools · 100% client-side

Regex tester
Popular New

Test regex with live highlights, groups and replace preview.
Regex builder
New

Build regex visually from common patterns.
String escape / unescape
New

Escape and unescape strings for JSON, JavaScript, C#, CSV, HTML, and shell workflows with copy-ready output for fast debugging.
String diff
New

Inline character-level diff between two strings.