Developer Utilitiesimplementedregexdeveloper

Regex Tester

Test patterns, flags, match indexes, and groups.

Privacy note: All processing runs locally in your browser. Nothing is uploaded or sent to external APIs.

[
  {
    "match": "Tooling",
    "index": 0,
    "groups": []
  },
  {
    "match": "tools",
    "index": 23,
    "groups": []
  }
]

How it works: JavaScript RegExp runs against your text and reports matches, capture groups, and indexes.