Torito

Regular Expression Tester

Test JavaScript regular expressions against local text, inspect capture groups and preview replacements with protection against runaway patterns.

About Regex testerFeatures & how to use

Test JavaScript regular expressions, captures and replacements locally. Expressions run in a disposable worker with a strict timeout.

What it can do

  • Test JavaScript regex patterns and flags.
  • Inspect matches and capture groups.
  • Stop long-running expressions after 250 milliseconds.

How to use it

  1. Enter a pattern and optional flags.
  2. Provide test text and an optional replacement.
  3. Run the expression and inspect its matches.