Solve regex puzzles, test patterns live, and master regular expressions.
Regex Puzzles is an interactive way to learn and practice regular expressions (regex) through short challenges and hands-on exercises. Improve your pattern-matching skills by solving puzzles, experimenting with regex patterns, and learning the syntax used in real development work.
Whether you are learning regex for the first time, preparing for coding interviews, or improving your development skills, this app provides practical training through focused regex puzzles and quizzes.
Solve Regex Puzzles
Practice regular expressions by solving structured challenges.
325 built-in regex puzzles
4 difficulty levels: Easy, Medium, Hard, and Impossible
Learn by writing regex patterns that match exactly the correct text
Build real skills instead of memorizing regex syntax
Regex Quiz & Challenge System
Each puzzle works like a regex quiz, testing your understanding of pattern matching.
Earn medals for shorter and cleaner regex solutions
Improve your regex logic and pattern design
Track progress as you complete increasingly complex challenges
Regex Playground
Experiment with your own patterns in a dedicated testing environment.
Test custom regex patterns
Live match highlighting while typing
Quickly debug and refine expressions
Built-In Regex Cheat Sheet
Keep essential regex syntax within reach.
Common tokens, quantifiers, and anchors
Quick regex examples
Useful reference while solving puzzles
Designed for Learning and Practice
Offline-first progress saving
Search and filter levels by completion
Light and dark theme support
Optional sync when new puzzle levels are released
Regex Puzzles is ideal for developers, students, and anyone who wants to improve their regex skills through puzzles, quizzes, and real pattern-matching practice.
Practice regularly and sharpen your regular expression knowledge one puzzle at a time.