Regex Tester

The Pandora's Box of Front-end

Whether to prevent users from registering fake emails or forcing the CPF to contain exactly the correct mathematical traits ('^[\w-\.]+@...'), RegEx are the Guardians of the Database. But if you type a wrong letter into this mystical code, it will block even whoever is typing it right.

Stress Test Bench

It's almost insanity to upload a RegEx to production without testing it first. In this real-time visual tool, you paste your expression with the Flags (`g`, `i`, `m`) and insert a malicious string below. We will instantly point out where the Matching occurred with colored highlights so you can validate if it worked!