RegexLearn
Learn regex step by step, typing a pattern at each step
RegexLearn teaches regular expressions one small step at a time. Each step explains a concept and asks you to type a specific pattern. Matches highlight as you type, and you move on once your answer is right. The lessons go from the basics to advanced patterns.
Free · No login · Browser · Beginner
About RegexLearn
It suits beginners who want a guided path. Next to the lessons there is a cheatsheet with an example for each symbol, and a playground where you can test your own patterns. A second track covers regex for SEO work.
The site is free and open source under the MIT license. It runs in the browser, saves your progress in your browser, and is translated into more than 20 languages.
On Breakpoint since 23 Oct 2026.