A modern, visual, debuggable workbench for regular expressions — railroad diagrams, node editor, step debugger, multi-flavor & multi-language code generation.
Write clear rules. Get a JavaScript regex you can inspect and test.
A modern, responsive Regex Tester built with HTML, CSS, and Vanilla JavaScript. Test regular expressions in real time, visualize matches, explore a regex cheat sheet, and use built-in replace and split tools.
Interactive regex tester — live highlighting, capture groups, substitute mode, savable library, built-in cheatsheet. Privacy-first, runs entirely in your browser.
Build and test JavaScript regular expressions with live matches and a safe worker timeout.
RegExen is a tool that helps devs write, test, visualize, and understand regular expressions.
To associate your repository with the regex-playground topic, visit your repo's landing page and select "manage topics."