Regex Tester — Test Regular Expressions Online
Test and debug regular expressions with real-time matching. Supports flags and capture groups.
Help Us Improve
Be the first to rate!
Frequently Asked Questions
How do I use the Regex Tester?
Enter your regular expression in the pattern field, paste test text below it, and all matches are highlighted in real time.
Is the Regex Tester free?
Yes, the Regex Tester on ToolPix is 100% free with no signup or installation required.
Is my data safe?
All processing happens in your browser, your data never leaves your device.
Which regex flags are supported?
All standard JavaScript regex flags: g (global), i (case-insensitive), m (multiline), s (dotAll), and u (unicode).
Are capture groups shown?
Yes — each match is highlighted in the text and capture groups are listed separately with their matched values.
Related Tools
CSS Minifier
Minify and compress CSS code. Remove comments, whitespa…
JWT Decoder
Decode and inspect JWT tokens. View header, payload, an…
Diff Checker
Compare two texts side by side. Highlight additions, de…
Cron Expression Generator
Build cron expressions visually with a point-and-click …
JSON to TypeScript
Convert any JSON object to TypeScript interfaces instan…