About Regex Tester
Test regular expressions in real-time — see matches, groups, and highlights. It runs entirely in your browser using client-side processing — your data never leaves your device. No signup, no ads, no watermarks.
Whether on desktop, tablet, or mobile, Regex Tester works instantly with real-time results.
Key Features
🔎 Live Regex Testing: Write a regex pattern, enter test text, and see live matches with highlighting
Supports flags (g, i, m)
See match positions, captured groups, and replace functionality
JavaScript regex syntax
How to Use Regex Tester
1
Enter your regex pattern
2
Enter your test text
3
Enter your matches (0 found)
Why Use This Tool
Completely Free Forever
No hidden costs, subscriptions, or premium tiers. Unlimited usage — no restrictions.
Instant Results
Get output in milliseconds with real-time processing. No waiting for servers.
Works Everywhere
Fully responsive on desktop, tablet, and mobile — no app installation needed.
No Usage Limits
Use as many times as you need. No daily caps, throttling, or forced waits.
Frequently Asked Questions
What is Regex Tester?
Regex Tester is a free online tool from ToolsJungle that runs entirely in your browser. No signup required, no data uploaded.
Is Regex Tester really free?
Yes — 100% free with no hidden costs, premium versions, or usage limits. ToolsJungle is committed to free tools for everyone.
Is my data safe?
Absolutely. All processing is client-side — your data stays in your browser and is never uploaded to any server.
Do I need an account?
No account, email, or registration needed. Open the tool and start using it immediately.
Use Regex Tester Now — Free
No signup · No ads · Instant results · 100% private