Which tool to use to check these image properties. How to check if an image is GDSN compliant.
Background information
Check https://synf.co/imagetypes for background information on image types and options.
Tools
There are a number of tools which you can use to check image properties:
Adobe Photoshop is a paid tool, the other 2 are free to use.
GIMP
Check the image properties
Image size in pixels, image size in mm, resolution, color space, precision, file name, file size, file type, number of pixels, number of layers, number of channels, number of paths.
Be aware that for TIF files, GIMP shows the flattened version of the image, NOT the layers of the TIF file.
- Open image with GIMP
- Go to menu 'Image' then 'Image Properties' (or use Alt + Enter)
- Click on the tab 'Color Profile' to check the Color profile
Check the layers
- Open image with GIMP
- Check bottom right dialog for 'Layers'.
- Be aware that for TIF files, GIMP shows the flattened version of the image, NOT the layers of the TIF file.
Check the clipping path
- Open image with GIMP
- Check bottom right dialog for 'Paths'.
IrfanView
Check the image properties
File name, folder, full path, compression, resolution, original size in pixels, current size in pixels, print size in inches, original colors, current colors, number of unique colors, disk size, file date, EXIF info, IPTC info.
- Open image with IrfanView
- Go to menu 'Image' then 'Information' (or use 'i')
ExifTool
Go to the ExifTool website: https://exiftool.org/ and don't get scared about the way it looks. See below an example:
- Download the Windows Executable and unzip it.
- In the Windows Explorer, grab the file or folder you would like to know the meta information for and drag it on the ExifTool executable.
- The meta information is shown like in the screenshot below. When you've dragged a folder on the executable, all files from that folder will be listed in the tool below each other.
