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Regex Tester

Developer

Test regex patterns against sample text with real-time match highlighting.

0
0
Pattern2 matches
//g
Test string
Highlighted
Email Ada at [email protected] or Grace at [email protected] to confirm.
No match: just plain text on this line.
Matches
  1. @13[email protected]
  2. @41[email protected]

Quick answers for Regex Tester

What does the Regex Tester do?
Test regex patterns against sample text with real-time match highlighting. The Regex Tester is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Regex Tester?
Open the Regex Tester on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Regex Tester free to use?
Yes. The Regex Tester is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Regex Tester safe and private?
Yes. The Regex Tester processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
Do I need to install anything to use the Regex Tester?
No. The Regex Tester runs entirely in your browser - no downloads, no accounts, no API keys. Paste your input, get the output, copy it back into your editor.
Can I use the Regex Tester offline?
Once the page has loaded, the Regex Tester continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.