Regex Tester
Test regular expressions in real time with match highlighting and replace preview.
Last updated: 2025-03-02
Test regular expressions in real time with match highlighting and replace preview. Use this tool whenever you need to work with regular expressions quickly.
All processing runs in your browser — your data is never sent to our servers. No sign-up required.
Use the fields below to enter your input, adjust any options, then copy or download the result.
How to use
- Enter or paste your input in the field below.
- Adjust options if the tool supports them.
- Copy or download the result as needed.
This tool uses JavaScript's RegExp engine. Regex behavior may differ in other languages.
//