Regex Cheat Sheet Builder
Choose the regex concepts you need and generate a compact cheat sheet for JavaScript patterns.
Keep only the regex notes you need
Regex references can be overwhelming when you only need a handful of concepts. This builder creates a compact JavaScript-focused cheat sheet from the topics you select, making it easier to keep beside a parser, validator, or text cleanup task.
Use it as a reference while writing patterns, then test real expressions in a regex tester before shipping.
Local reference builder
No pattern or text is uploaded.
Frequently Asked Questions
What does this regex cheat sheet include?
It builds a compact cheat sheet based on the pattern features you select, such as anchors, groups, character classes, and flags.
Does it test regex matches?
No. This tool creates reference notes. Use the Regex Tester for live matching.
Which regex flavor is this for?
The notes are written for common JavaScript regular expressions.
Is anything uploaded?
No. The cheat sheet is generated in your browser.
Need to test a pattern live? Use the existing regex tester.