Regex Visualizer
Write a regular expression and test it against any string. See matches highlighted, get plain-English explanations, and browse a handy cheat sheet. Free, instant, 100% private.
Regex Cheat Sheet
. Any character\d Digit (0-9)\w Word character\s Whitespace^ Start of string$ End of string* Zero or more+ One or more? Optional (0 or 1){n} Exactly n times{n,} n or more times{n,m} n to m times[abc] Character set[a-z] Range (a to z)[^abc] Negated set(abc) Capture group(?:abc) Non-capture groupa|b Alternation (or)(?=) Lookahead(?!) Negative lookaheadAbout Regex Visualizer
Understand regular expressions visually. Enter any regex pattern and test string to see matches highlighted in context. Each part of the regex is explained in plain English, making it easy to learn regex or debug complex patterns. Includes a comprehensive cheat sheet for quick reference.
Visual Highlighting
See all regex matches highlighted directly in your test string. Each match is color-coded so you can instantly see what your pattern captures.
Plain-English Explanation
Every regex token is translated into readable English. Great for learning regex, debugging complex patterns, or understanding someone else's regex.
Capture Group Viewer
See all matched groups in a structured table. Perfect for working with patterns that extract specific parts of text using capturing parentheses.
Built-in Cheat Sheet
Reference guide for common regex syntax: quantifiers, character classes, anchors, groups, and lookarounds. Always available as you work.