Regex Tester
Live regex with groups + flags
//g
Test input
0 matches · 0 capture groups
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Questions
- Is Regex Tester free?
- Yes. Regex Tester is completely free, with no account, no sign-up, and no usage limits. It runs entirely in your browser.
- Do my files get uploaded when I use Regex Tester?
- No. Regex Tester processes everything on your device, so your files and text never leave your browser. You can verify it yourself: open your browser's Network tab and you'll see no uploads.
- How do I use Regex Tester?
- Open Regex Tester in your browser, no install or sign-up needed, then paste, type, or drop in your input and the result appears instantly. Live-test JavaScript regular expressions. Capture groups, named groups, all 6 flags, highlighted matches, 12 ready-made presets (email, URL, UUID, hex colour, Indian PAN/GSTIN, etc). Runs in your browser.
- Is there a file size limit in Regex Tester?
- There's no hard file or text size limit. Because Regex Tester runs locally in your browser, the only ceiling is your device's available memory, and everyday files process instantly.