Regex Tester & Debugger
Validate your Regular Expressions against test strings in real-time.
Match Results2 matches
Contact us at support@syntaxsnap.com or admin@test.org for help.
Invalid: @missinguser.com or noatsign.net
Captured Groups & Positions
| # | Match | Index | Named Groups |
|---|---|---|---|
| 1 | support@syntaxsnap.com | 14 | — |
| 2 | admin@test.org | 40 | — |
Why use this tester?
Regular Expressions can be tricky. This tool provides a safe, sandboxed environment to test your patterns against various strings without needing to run a server or console.
Frequently Asked Questions
Which Regex flavor is supported?
This tool supports JavaScript (ECMAScript) Regular Expressions. It uses the browser's native RegExp engine for 100% accuracy.
Are my test strings saved?
No. SyntaxSnap is a local-first platform. All testing happens in your browser's memory and is cleared when you refresh the page.
How do I use flags?
You can add flags like 'g' (global) or 'i' (insensitive) directly in the pattern input to control how the regex engine matches your text.