Image Format Identifier
Find out the true format of any image file
Your file is analyzed locally — instant results, no upload needed
7 images processed
Files deleted after 1 hour
Free — no signup required
Click to upload or drag and drop
Any image file — even with unknown or wrong extensions
Format Identified
File
Size
KoalaPic support
Supported
Not supported
Can convert to:
Analyzing...
Image Details
Dimensions
Megapixels
Color Mode
Transparency
Animation
Color Profile
Profile
Camera
Make
Model
Unknown Format
The file may be corrupted, encrypted, or in an unsupported format.
Frequently Asked Questions
It reads the first bytes of your file (known as magic bytes or file signature) to determine the true format. This is more reliable than checking the file extension, which can be renamed or missing.
The identifier will detect the real format regardless of the file extension and show a mismatch warning. For example, a JPEG file saved as .png will be correctly identified as JPEG.
JPEG, PNG, GIF, WebP, HEIC, AVIF, TIFF, BMP, SVG, PDF, and ICO. These cover virtually all image formats in common use today.
No. The format detection happens entirely in your browser by reading the first few bytes of the file. Your image never leaves your device unless you choose to load full metadata details.
Need full EXIF data, GPS, camera info? Try our EXIF Viewer