regex101: build, test, and debug regex
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
regex101: Regex tutorial
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
regex101: Regex Quiz
Welcome to the regex101 regex quiz! This is an interactive learning tool you can use to improve your understanding of regular expressions, and their different applications. The quiz is divided into a …
regex101: Regex Cheatsheet
Regular Expression 3 matches (51 steps, 4.7ms) (?mx) # x- modifiers to add comments in regex↵ #. #any character, except newline↵ #\s. #only space and newline characters↵ #\w+ #Word quantifiers to …
regex101: Community Pattern Library
Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!
regex101: test
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
regex101: Javascript Regex
regex = /^(?:(?:\(?(?:00|\+)([1-4]\d\d|[1-9]\d?)\)?)?[\-\.\ \\\/]?)?((?:\(?\d{1,}\)?[\-\.\ \\\/]?){0,})(?:[\-\.\ \\\/]?(?:#|ext\.?|extension|x)[\-\.\ \\\/]?(\d+))?$/i;
regex101: Replace word
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
regex101: Account Page
If you want to permanently remove the saved data, you can easily do so from here. The delete link will be automatically tied to your account, so you never have to worry about losing it. By signing in you …
regex101: Settings
Customize your regex101 experience to suit your needs. Extensive options available: themes, default flavor, site language, and much more.