ToolBoxImage Format & Properties Checker
Find the real format of a picture, even if its file name is wrong.
Free · No signup · Files stay on your device
or drop files here
How to use Image Format & Properties Checker
- 1Click the Select button and choose your files, or drag and drop.
- 2Press the Image Format & Properties Checker button.
- 3Download your result.
Your files stay private
Your file is processed on your own device. It is never uploaded to our servers.
Frequently asked questions
Is Image Format & Properties Checker free?
Yes. ToolBox is 100% free. No signup, no watermark, no daily limit.
Are my files uploaded to a server?
No. All work happens inside your browser on your own device. Your files never leave your phone or computer.
Does it work on mobile?
Yes, on Android, iPhone, tablets and desktop. Very large files can be slow on older phones.
More Compression & Info tools
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Image Compressor to KB
Shrink a picture to a size you choose, such as 100 KB.
Bulk Image Compressor
Compress many pictures at once and download them as a ZIP.
Image File Size Checker
See the exact file size of one or more pictures.
Image Dimension Checker
Find the width, height, ratio and megapixels of pictures.