Regex Tester
How to use the Regex Tester
- Enter your regex pattern (without slashes).
- Select flags: global, ignore case, multiline, or dotall.
- Paste or type a test string and review match results instantly.
Why process locally?
Test strings may contain user data or secrets. Local regex testing ensures your patterns and inputs never leave the browser.
Frequently asked questions
Is this Regex Tester free?
Yes. Every tool on dev.logicapplabs.com is free to use with no account required.
Are my inputs uploaded to a server?
No. All processing runs 100% client-side in your browser. Your data never leaves your device.
Is there a limit on how many operations I can run?
No browser-side limits for standard use. For heavy offline workflows, consider the Logic Utility Suite.
How accurate are the results?
Results use standard browser APIs (Web Crypto, JSON.parse, etc.) and update in real time.