Regex Tester & Cheat Sheet
Regex Tester & Cheat Sheet
Free regular expression tester with common patterns and a quick reference cheat sheet
Formula
Regex: pattern matching syntax for text validation and extraction
Frequently Asked Questions
What is a regular expression?
A regex is a pattern that describes a set of strings. Used for validation, search/replace, and text extraction in programming.
What does d+ mean?
d matches any digit (0-9). + means one or more. So d+ matches one or more consecutive digits.