Regex Tester & Cheat Sheet

Regex Tester & Cheat Sheet — free, browser-based tool. Runs entirely client-side, no signup required.

Pattern

//g

gims

Test string

Email^[\w.+-]+@[\w-]+\.[a-zA-Z]{2,}$

URL^(https?:\/\/)?[\w-]+(\.[\w-]+)+[^\s]*$

Digits only^\d+$

Whitespace\s+

Word characters\w+

Hex color^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$

IPv4 address^(\d{1,3}\.){3}\d{1,3}$

Date (YYYY-MM-DD)^\d{4}-\d{2}-\d{2}$