File Type Inspector

File Type Inspector: Identify common file formats using their magic-byte signatures, independently of the filename.

File Type Inspector

File Type Inspector: Select any local file to compare its starting bytes against a short list of recognized formats such as PDF, PNG, JPEG, WebP, GIF, ZIP and GZIP.

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How to use File Type Inspector

Select any local file to compare its starting bytes against a short list of recognized formats such as PDF, PNG, JPEG, WebP, GIF, ZIP and GZIP.

Example

A file named image.dat that starts with the standard PNG signature can be identified as PNG regardless of the extension.

What to know

Only a few common formats are recognized. Signature detection is not malware scanning, full file validation, or proof of content safety. Unrecognized files may still be valid.