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20sharp tools

Regex Tester

🔒 Runs entirely in your browser — your data never leaves this tab
Local processorReady for input

About Regex Tester

Test and debug regular expressions in real time. Highlights matches, shows match groups, and counts results. Supports g, i, m, s flags.

How to use Regex Tester

  1. Enter or select the source material in the tool above.
  2. Choose the available options for the result you need.
  3. Run the tool, review the result, then copy or download it.

Example

Test [a-z]+ with the gi flags against sample text and inspect every highlighted match.

Frequently asked questions

Is Regex Tester free to use?

Yes. Regex Tester is free, requires no account, and has no usage limit imposed by TipityTools.

Does Regex Tester upload my data?

No. The calculation runs locally in your browser. TipityTools does not send your tool input or generated output to its server.

Can I use Regex Tester offline?

Yes, after the application files have been cached by your browser. Third-party advertising remains network-only.