Offline Secret Pattern Scanner
Scan text for private-key markers and common credential token patterns.
Processing stays in your browser. Heuristic checks can miss secrets and flag harmless fixtures. Reports line numbers and masked previews without revealing full values; no breach service is queried.
How to use the offline secret pattern scanner
Scan text for private-key markers and common credential token patterns. Complete the source text fields above, or upload a UTF-8 text file for source text. Choose Run tool, review the output, then copy or download the result.
Example
A BEGIN PRIVATE KEY marker produces a private-key finding.
Good to know
Heuristic checks can miss secrets and flag harmless fixtures. Reports line numbers and masked previews without revealing full values; no breach service is queried.