Regex Tester
Test and debug your JavaScript regular expressions. Highlights all matches and group captures with safe Web Worker execution to prevent page freezing.
Regular Expression
Highlighted Matches
Visual representation of matches within the test string
Detailed Analysis
Breakdown of matched values, index offsets, and captured groups
| # | Match Value | Indices | Captures |
|---|---|---|---|
| No matches evaluated yet. Click "Evaluate Expressions" to run. | |||
Frequently Asked Questions
What is the Regex Tester used for?
The Regex Tester is a developer utility designed to format, encode, decode, parse, or convert code snippets and data models efficiently.
Is my source code or data kept private on the Regex Tester?
Yes, privacy is guaranteed because all calculations and formatting are done in your local browser sandbox. No input code or sensitive data is sent to external servers.
Does the Regex Tester support syntax highlighting?
Where applicable, the tool utilizes rich code editors with responsive syntax highlighting to make reading and editing your code seamless and easy.
Can I run the Regex Tester on my mobile device?
Yes, the interface is fully responsive and designed to work across desktop, tablet, and mobile browsers.
Are there any API endpoints available for the Regex Tester?
This is a client-side tool built for manual interactive developer workflows and does not expose direct REST API endpoints.