Hello,
can I find out in the exiftool if the photo was compressed/or if it's the original?
For example the original would be 3000x4000 15 MB vs. 3000x4000 6 MB as a compressed version.
Thank you
No. Exiftool only deals with the metadata, not the actual image data.
I'm not sure if there is any practical way to easily tell which file might be original. You could load a jpg and resave it with the highest/best quality level and could end up with an image that has a larger file size due to all the re-compression artifacts introduced.
Alright, thank you!
You could look at the JpegDigest value reported by ExifTool. This should be the same for all originals from a given device written at the same quality, but will change if the image is recompressed.
- Phil
Great idea, thank you!!
Phil's suggestion about checking the JpegDigest value is really useful. And if you're working with large images and need to compress them without losing quality, you can also use online image compressor tool.
Edit: PH removed possibly commercial link