How to use the Regex Cheat Sheet
- Open the tool. The tool loads instantly in your browser.
- Use the controls. Follow the on-screen buttons and options.
- Save or share. Copy, download or print the result when you are done.
About this tool
JSON, XML, YAML, SQL, CSS, JS formatters, encoders, regex and code generators.
Read the complete Regex Cheat Sheet guide
Frequently asked questions
Is the Regex Cheat Sheet free to use?
Yes. The Regex Cheat Sheet on Gemma-4 is 100% free with no sign-up, no limits and no watermark. An optional free account lets you save favourites.
Is my data private?
Yes. Your inputs are processed instantly and are not stored on our servers.
Does it work on mobile phones?
Absolutely. The Regex Cheat Sheet is fully responsive and works on Android, iPhone, tablets and desktop browsers such as Chrome, Edge, Safari and Firefox.
Who is the Regex Cheat Sheet useful for?
It is popular with web developers, backend and API engineers, students learning to code — anyone who needs quick, reliable help with formatting, validating and converting code and data.