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Free, open-source developer utilities for encoding, conversion, formatting, and more.

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  1. Home
  2. Tools
  3. Regular Expressions
  4. Regex Flags Tester

Regex Flags Tester

Free online regex flags tester — compare how different regex flags (g, i, m, s, u, y) affect pattern matching instantly in your browser. No data is stored. Shows match counts side-by-side for each flag combination.

Regex pattern

Auto - ready
Input
Output

No output yet

Enter input to see results instantly

Overview

Free online regex flags tester — compare how different regex flags (g, i, m, s, u, y) affect pattern matching instantly in your browser. No data is stored. Shows match counts side-by-side for each flag combination.

Category:
regex

Runs entirely in your browser. No data is sent to our servers.

Examples

Compare how different flags affect matching of mixed-case text

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