# Inspect & Identify

File identification reads the first bytes of a file, known as its signature or magic number, to tell its real type even when the extension is missing or wrong. A PDF starts with the characters `%PDF`, and ZIP-based files such as DOCX start with `PK`. A hex view shows every byte for closer inspection.

## Tools

No tools are available here yet.

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Category: [File & Archive Tools](https://techolm.com/file-tools)