MetaTools

Regex

Regex Tester
  • Match 1Index 0
    Test
    Groups: Test
  • Match 2Index 5
    your
    Groups: your
  • Match 3Index 10
    regular
    Groups: regular
  • Match 4Index 18
    expression
    Groups: expression
  • Match 5Index 29
    here
    Groups: here

Overview

Free regex tester. Validate patterns, flags, and match results in real time.

Test regular expressions with live match results.

Common workflows

  • Format and validate JSON before committing, debugging, or pasting payloads into API tools.
  • Decode JWTs, Base64 strings, URL-encoded text, and HTML entities while investigating data flow issues.
  • Preview HTML, CSS, and JavaScript together or convert between related web data formats like CSV, JSON, and YAML.

FAQ

Which flags are supported?

All JavaScript regex flags including g, i, m, s, u, and y.

Does it show capture groups?

Yes, capture groups are listed for each match.