file signature batch scanner — free browser tool | fatcousin

drop hundreds of files · detect extension mismatch · magic bytes vs declared extension · batch triage · export report · runs locally

load

Reads the first 512 bytes per file off the UI thread. Signature database: … · entropy flag above 7.5 without a header.

Drop files to scan

500+ files OK · virtualized table

Select file

analyzed 0 · mismatches 0 (0 critical · 0 high · 0 medium)

mismatches first

drop files · first 512 bytes · entropy · severity triage

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fileextdetectedmatchseveritysize