File Type and Metadata Inspector

Inspect file headers, image dimensions and basic metadata locally.

How to use

1. Select any file to inspect its signature, browser MIME value and size.
2. For supported image formats, dimensions and readable EXIF properties are included in a downloadable JSON report.

About these formats

File extensions are merely names. File signatures provide a more reliable clue about the underlying format, although they are not a full security scan.

Browser limitations

Unknown or specialized formats may appear as unrecognized. File content is not uploaded, and this tool does not perform antivirus scanning.

Frequently asked questions

Will it modify my files?

No. It only reads the selected file.

Can I inspect a suspicious file?

Yes, but detection does not guarantee a file is safe.

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