Regex Tester

Test regular expressions against sample text.

TEXT

MATCHES

1. Hello @ 0 2. world @ 6 3. Regex @ 12 4. tester @ 18

Use cases

Try a regular expression against real sample text before moving it into JavaScript or backend code.

Test patterns for emails, IDs, paths, IP addresses, or timestamps copied from logs and exports.

Check how global, case-insensitive, and multiline flags change match results.

Which regex engine is used?+

The tool uses the JavaScript regular expression engine in your browser.

Can I use global matches?+

Yes. Add the g flag to list multiple matches.

Endpoint

POST/api/tools/regex-tester

Request

{
  "input": "hello world",
  "options": {}
}

Response

{
  "result": "processed output",
  "tool": "regex_tester"
}