File Profiler

File Profiler provides a quick local view of a selected file’s browser-visible metadata, first bytes, common signature hints, entropy estimate, line-ending counts, and SHA digests. It is designed for triage and report preparation, not for definitive file identification or deep inspection.

The profiler is deliberately shallow. It does not unpack archives, execute content, parse Office documents, render PDFs, inspect macros, or classify malware. That constraint is a feature: researchers can gather basic public-report details without introducing a parser surface that might mishandle hostile files.

Local Processing Boundary

This tool runs in the browser. It does not upload input, call a backend API, or store values unless the page explicitly says otherwise.

This tool reads only a file you select. It does not classify malware, sanitize documents, unpack archives, or execute content.

FileMaximum input: 50.0 MiB.

Data Handling

• The browser reads only the file selected by the user.
• File contents are processed locally in memory.
• No output is uploaded or stored.
• No network request is made by this component.
• Hashes and summaries are produced only for the current page session.

Data handling is part of the tool boundary. The page should say whether input stays in the browser, whether anything is stored, whether network calls are made, and what the output can and cannot prove.

Boundary

Signature hints are based on the first bytes of the file and can be spoofed. Entropy is a rough byte-distribution signal and should not be treated as proof of encryption, packing, compression, or malicious behavior. Use the profiler to decide what additional review may be needed, not to make final determinations.