Developer Tools

Real-time regex testing

Test regular expressions in real time with instant match highlighting.

Install on Chrome

Features

Regex Tester Pro gives you a clean, real-time regex testing environment right in the extension popup.

Free

  • Real-time match highlighting
  • Test against custom input
  • All JS regex flags
  • Show match and capture groups
  • Copy regex or matches

Pro Features

  • Test against page content
  • Pattern library
  • Find and replace preview
  • Regex explanation
  • Common pattern templates

All data stays on your device. No tracking, no accounts, no data collection.
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