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© Nutter Toolsnutter.tools
  1. Home
  2. Regex & cron
  3. Secret exposure scanner
Your files stay on your device

Secret exposure scanner

Scans pasted code, config or text for API keys and tokens using documented vendor formats plus an entropy heuristic, splitting findings into known-format and heuristic and masking every match.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

Report a problem

Paste something to scan it.

Known vendor formats are high confidence, not proof: a match means the string has the exact shape that vendor documents, so check it against your own code. The entropy findings are a heuristic and are labelled as one. Anything that already shipped to browsers, a bundle or a public repo, should be treated as public: rotate the credential rather than only deleting the file. Publishable keys are reported separately because they are designed to be public.

Scan setup

Up to 200,000 characters
Also flag high-entropy tokens near secret-like names
More settings▾

Entropy is bits per character, 1 to 6. Token length is 12 to 128. Shorter floors find more and mean less.

The scan runs in this tab. No request carries your input, and nothing is written to storage.

More regex & cron tools

  • Hash generator
  • Password generator
  • Random token generator
All regex & cron tools

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