TechFinity toolkit
File Analyzer
Fingerprint a file, identify its signature, calculate hashes, inspect metadata, and preview printable strings without retaining the upload.
Analyze a file
Privacy: the file is inspected directly from PHP’s temporary upload location. This tool does not intentionally copy it into the web root or retain it after the request.
What this checks
File signature, MIME type, MD5/SHA-1/SHA-256 fingerprints, ExifTool metadata, PDF information when available, image dimensions, and the first 200 printable strings. Command output is scrubbed so temporary and server filesystem paths are not displayed.
A hash identifies file content, not trustworthiness. MD5 and SHA-1 are retained here for compatibility/fingerprint comparison; use SHA-256 for stronger integrity comparisons.