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Regex Tester
regex · regexp · test · pattern · match
//g
Matches highlighted
Contact us at hello@example.com or support@toolboxy.net for assistance. Invalid: not-an-email, also@, @nodomain
2 matches
"hello@example.com""support@toolboxy.net"
How to use
- 1
Enter a regex pattern and flags.
- 2
Type a test string to highlight matches.
- 3
Use presets for common patterns.
FAQ
Is this tool free?
Yes — no sign-up, no installation, completely free to use right away.
What is this tool?
Test and debug regular expressions with real-time match highlighting and flag control. You can use it for free with no sign-up or installation — just open the page and start right away.