Menu RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Supports JavaScript & PHP/PCRE RegEx. Results update in real-time as you type. Roll over a match or …

Moved Permanently The document has moved here.

Learn and test regular expressions with this interactive tool, featuring real-time highlighting, regex cheatsheet, and community patterns.

RegExr is a desktop application to learn, build, and test Regular Expressions (RegEx) with real-time results and support for JavaScript & PHP/PCRE.

Interactive tool for learning, building, and testing regular expressions with syntax highlighting, contextual help, cheat sheet, and community patterns.

RegExr is an online tool for learning, creating, and testing Regular Expressions with real-time results and support for JavaScript and PHP/PCRE.

RegExr: Learn, Build, & Test RegEx

regexr.com