Regular Expression Tester

Test regex patterns in real time with match highlighting.

//g
Test string
Matches: 9
The quick brown fox jumps over the lazy dog.
Match details
Match 1 @ 0–3“The”
Match 2 @ 4–9“quick”
Match 3 @ 10–15“brown”
Match 4 @ 16–19“fox”
Match 5 @ 20–25“jumps”
Match 6 @ 26–30“over”
Match 7 @ 31–34“the”
Match 8 @ 35–39“lazy”
Match 9 @ 40–43“dog”

How to use

  1. Pick the tool you want to use.
  2. Enter your input or adjust the options.
  3. Copy or download the result.

FAQ

Is it free to use?

Yes. All features are free with no usage limits, and no account is required.

Is my input sent to a server?

No. Everything runs locally in your browser — your data never leaves your device.

Does it work on smartphones?

Yes. It works on both desktop and mobile with modern browsers such as Chrome, Edge, Firefox and Safari.