QuickFreeSEO

Regex Tester

Test regular expressions live and inspect each match with capture groups.

//
2 matches
@12hello@example.com
@33test@foo.io

How to use

  1. Enter your pattern and flags.
  2. Paste sample text.
  3. View matches and groups instantly.

Frequently asked questions

Is the Regex Tester free to use?
Yes. The Regex Tester is 100% free, requires no signup or API key, and runs entirely in your browser.
Does the Regex Tester send my data to a server?
No. All processing happens client-side in your browser — your input never leaves your device.
How do I use the Regex Tester?
Enter your pattern and flags. Paste sample text. View matches and groups instantly.

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