Image Format & Magic Byte Checker
Identify true image MIME types and formats via magic byte header inspection.
Choose Image(s) or Drag & Drop
JPG, PNG, WebP, AVIF, GIF, TIFF supported. Up to 30 image(s) (max 50MB each).
About Image Format Checker
<p>Verify the authentic file format of any image using magic byte analysis rather than relying on file extensions, catching spoofed or corrupted files.</p>
How to Use Image Format Checker Online
Key Features
Frequently Asked Questions
Is ReviewIt.xyz free to use?
Yes, all 15 PDF tools on ReviewIt.xyz are 100% free to use with no account registration or credit card required.
Are my uploaded PDF documents secure?
Absolutely. Your uploaded files are encrypted during transit, processed in isolated temporary scratch directories, and automatically purged. We never inspect or store your documents permanently.
Can I use ReviewIt.xyz on mobile devices?
Yes, ReviewIt.xyz is fully responsive and works seamlessly across Android, iPhone, iPad, Windows, Mac, and Linux web browsers.
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