Tool Atlas Regex Tester
Test regular expressions against sample text and see matches with capture groups.
Flags
About this tool
Test and debug regular expressions in your browser with instant match highlighting and capture groups.
- See all matches and capture groups in a clear table.
- Highlight matches in the text for quick visual feedback.
- Toggle flags (global, ignore case, multiline) and run locally.
How to use this tool
- Enter your content or upload your files.
- Adjust available options for your desired output.
- Process and download or copy your result.
Tool FAQ
Is my data private?
This tool is designed for local browser processing during the MVP stage.
Can I process multiple times?
Yes. You can run the tool repeatedly with different inputs.