💻 Developer Tools
Regex Tester
Test a JavaScript regular expression and flags against sample text in real time.
Ready to use · Runs in your browser · No signup
tools · toolkits
How to use the Regex Tester
Test JavaScript-compatible regular expressions against text and see match counts or syntax errors immediately in the browser.
- Enter the regular-expression pattern without slash delimiters.
- Enter JavaScript regex flags such as g, i, m, s, or u.
- Fieldlet compiles the expression and lists matching text when the expression is valid.
Last reviewed for accuracy:
Common questions
Which regex flavor does this use?
It uses the JavaScript RegExp implementation provided by the visitor's browser.