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Regex Tester

Test JavaScript regular expressions in a worker with a time limit.

Input

Up to 200 KB

Result

Your result will appear here.

 Processed on your device · Content is not stored.


Instructions & limits
How to use
Test JavaScript regular expressions in a worker with a time limit.
  1. Enter your content, or select Use example.
  2. Adjust the available options.
  3. Select Run tool, review the result and copy or download it.
When to use this tool
Test JavaScript regular expressions in a worker with a time limit.
Example input
Hello Omkey 2026
Limits
The worker stops after 700 ms. Up to 1,000 matches and 500 pattern characters. Input up to 200 KB.
Frequently asked questions
What does this tool do?
Test JavaScript regular expressions in a worker with a time limit.
What are the limits?
The worker stops after 700 ms. Up to 1,000 matches and 500 pattern characters. Input up to 200 KB.
Is my data sent to a server?
No. This tool runs in your browser. We do not receive your input or result.
Do I need an account?
No. Use the tools for free without signing in. Favorites and recent tools are stored only in your browser.
Does this work on mobile?
Yes, in a modern browser with Web Crypto support. 
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