Regex Tester
RegexTest a regular expression against sample text with live match highlighting and capture groups.
Frequently asked
Is Regex Tester free to use?
Yes. Regex Tester is completely free, with no sign-up and no usage limits.
Does Regex Tester upload my data?
No. Regex Tester runs entirely in your browser — your input never leaves your device and nothing is stored on a server.
How does Regex Tester work?
Test a regular expression against sample text with live match highlighting and capture groups.
Can I use Regex Tester offline?
Once the page has loaded it works without a network connection, because all processing happens locally in your browser.