Regex Tester
Write a regular expression and watch matches highlight live. See capture groups, named groups and positions, try replacements, and start from common presets such as email, URL and IP address. Uses your browser's JavaScript regex engine; nothing is uploaded.
How to use Regex Tester
- Enter a pattern and pick flags.
- Paste the text you want to test against.
- Matches highlight live; expand the list to see groups, or try a replacement.