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Regex Tester
Enter a JavaScript regular expression and test text to inspect matches, indexes, groups, and replacement output.
Test a regular expression
Work directly in the browser, then copy or export your result.
Match options
Flags
/g
Matches
2
Match results
hello@toolmomo.com
Index: 9
support@example.com
Index: 37
Replacement preview
Contact: [email], backup: [email]
Inputs and results are intended for temporary browser-session work. Review final content before publishing or using it in production.
Testing notes
- Uses JavaScript RegExp syntax.
- Global matching lists every hit.
- Replacement preview helps verify bulk text edits before applying them elsewhere.
How To Use Regex Tester
1
Step 1
Enter or upload the information needed for Regex Tester.
2
Step 2
Adjust the options and review the preview or generated output.
3
Step 3
Copy, export, or continue with the result in your workflow.