Image Info
Get the technical facts of an image file in one view: format and MIME type, file size, pixel dimensions and how they display after EXIF rotation, megapixels, aspect ratio, color space, channels, bit depth, transparency, palette, progressive encoding, chroma subsampling, DPI, frame count, loop and duration for animations, and whether EXIF, XMP, IPTC or a color profile are embedded.
Frequently asked questions
What does Image Info report?
It reports format, MIME type, file size, width and height, megapixels, aspect ratio, color space, channels, bit depth, alpha, palette, progressive encoding, chroma subsampling for JPEG, DPI, number of frames, animation details and whether EXIF, XMP, IPTC and an ICC profile are present. Each value comes from the file headers, so nothing is estimated.
Why are there two sets of dimensions?
Phones often store photos sideways with an EXIF orientation tag. Width and height describe the stored pixels, while the display dimensions show the size after the rotation is applied. The display line only appears when the orientation swaps the sides.
How is the aspect ratio calculated?
The width and height are reduced by their greatest common divisor, so 1920 by 1080 becomes 16:9. When the reduced numbers are larger than 50, the ratio is shown as a decimal, such as 1.33:1.
What does bit depth mean?
Bit depth is the number of bits for each channel of a pixel. Most photos and web images use 8 bits, which gives 256 levels per channel, while PNG and TIFF can store 16 bits for smoother gradients. Palette images may use fewer bits.
How does it handle animated images?
For animated GIF and WebP files it reports the number of frames, the height of one frame, how often the animation loops, with Forever for endless loops, and the total duration from the frame delays. Still images report one frame and no loop or duration.
What is chroma subsampling?
JPEG usually stores color at a lower resolution than brightness. 4:2:0 halves the color resolution in both directions and keeps files small, while 4:4:4 keeps full color detail, which matters for text and sharp graphics.
Which formats can I check?
JPEG, PNG, GIF, WebP, TIFF and AVIF files up to 5 MB. AVIF files are recognized from their HEIF container and reported as AVIF.
Does the tool open the whole image?
No. It reads only the file headers, so even very large images are checked quickly and the pixels are never decoded or changed.
Why is the DPI shown as not set?
Many images, especially WebP files and screenshots, do not record a resolution in a place the tool reads. Apps then assume 72 or 96 DPI. Use the Image DPI Changer to write a value.
How can I see the actual metadata values?
Image Info only tells you whether EXIF, XMP, IPTC or a color profile are present. The Image Metadata Viewer shows their contents, such as camera settings, GPS location and profile name.