Text Processing
Regex Tester
Test regular expressions against text and inspect matches.
Local processing
This tool is designed to run in your browser. Do not paste secrets or production credentials into any online tool.
How to use this tool
Paste your input, choose an action, review the result, then copy the output when it looks correct. Invalid input shows a readable error instead of silently changing your data.
Example
Input
\b\w+@\w+\.com\b
user@example.comOutput
1. user@example.com at index 0FAQ
Which regex engine is used?
The tool uses the JavaScript regular expression engine in your browser.
Are email templates always accurate?
No. Common templates are practical examples, not perfect validators.
Can I use flags?
The MVP uses global matching by default.