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Friday, March 13, 2026

Interactive Regex Tester & Validator

/ /
0 Matches
Matches will be highlighted here...

Regex is a powerful sequence of characters that forms a search pattern:

  • Validation: Check if an input is a valid email, password (strength), or URL.
  • Search & Replace: Find specific patterns in large documents and swap them instantly.
  • Flags: Use g (global) to find all matches, or i (insensitive) to ignore uppercase/lowercase.
What do the slashes / / mean? +
In programming, Regex patterns are usually wrapped in forward slashes. Anything after the second slash (like 'g' or 'i') is called a "flag" that changes how the search works.

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