Workspace Files stay on your device
images · identify
Image Format Sniffer
Reads the real bytes, tells you what each file actually is, and downloads a correctly-named copy — bytes untouched.
A little guidance. A better result.
How to use Image Format Sniffer
Reads real bytes, reports the true format, downloads a correctly-named copy — bytes untouched.
Prepare your input
Choose a file whose extension may be misleading.
Use the workspace
Read the detected format from its byte signature.
Check your result
Download a correctly named copy if needed.
Know the limits
Renaming does not convert the file or prove it is safe; the original bytes remain unchanged.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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