Detect the Real File Type
Received a file with no or a suspicious extension? Its signature bytes reveal the true format and MIME type.
- 100% free
- No signup
- Files stay on your device
Processing happens locally in your browser. Your files are not uploaded to IMGWE or any other server.
How to use File Type Detector
Choose one or more files.
The signature bytes are analyzed instantly.
See the real type, MIME and suggested extension.
Private
Your files are processed on your device and never uploaded.
Free
No account, no watermark and no daily limits.
Fast
No upload or queue – results are ready in seconds.
Any device
Works in modern browsers on desktop, tablet and phone.
Frequently asked questions
Detect the real type of any file from its magic bytes, even with a wrong or missing extension. See the true MIME type and suggested extension instantly.
How does detection work?
Most formats start with a unique byte signature, called magic bytes, that identifies them regardless of the file name.
Can it spot a disguised file?
Yes. A mismatch between extension and real type is highlighted.
Are files uploaded?
No. Only the first bytes are read, locally.
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