Add your input
Open the regex tester and add the link, file, text, or settings it needs.
Developer & Tech
Regular Expression Tester
Test patterns, flags and matches against sample text as you type.
Regex tester
See every match while you tune a pattern. Processing stays in this browser.
0 matches
Quick answer
How to use this free regex tester
Enter the pattern, choose flags and paste representative sample text. Review every match and edge case before using the expression in production.
- Price
- Free
- Account
- No signup
- Privacy
- Browser-based
- Best for
- input parsing, search patterns, validation prototypes
A straightforward regex tester
Regular Expression Tester gives you a focused workspace with clear controls, a live result, and useful export or sharing options.
Review the result
Use the live preview and validation messages to check the output.
Export or share
Copy, download, present, or create a read-only share link when it is ready.
Common questions
Good to know
Is the Regex Tester free?+
Yes. This browser workspace is free to use without an account.
Can I share the result?+
Yes. The share panel creates a read-only snapshot. A PDF must first be uploaded with the explicit share-ready action.