Developer Tools
Regex Tester
Write a regular expression and test it against your text in real time. Matches are highlighted and listed with their positions.
How to Use
- Enter your regular expression in the pattern field.
- Type or paste your test text below.
- Matches are highlighted automatically. The match list shows positions and captured groups.
FAQ
What regex flavour is this?
JavaScript's built-in RegExp engine (ECMAScript). It supports lookaheads, named capture groups, and Unicode escapes.
Why use the g flag?
The global flag finds all matches. Without it, only the first match is returned.
Is my data stored?
No. Everything runs locally in your browser.