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Regex Tester

Test JavaScript regular expressions against sample text with live match highlighting and capture groups.

Tip from Tink: Add the g flag to find every match, not just the first.

2 matches

Contact ann@example.com or bob@test.com for help.
  • #1 “ann@example.com” → groups: "ann", "example"
  • #2 “bob@test.com” → groups: "bob", "test"
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How to use the Regex Tester

  1. Type a pattern and flags.
  2. Paste test text.
  3. Matches are highlighted and listed with their groups.

Everything runs in your browser. Nothing you enter is uploaded.