This is going unnoticed but I have a feeling that the SCALE DOWN command is blurring a lot more than it should. This wasn't the default behaviour of GIMP in older versions. So there is definitely a problem with this software. We all know that scaling an image renders its properties lost but this isn't the case here. There is something wrong with GIMP 2.10 ...
My two cents.
I must say that I was a little obsessed with the topic, but not that much anymore.
I do not use "third-party" tools for optimizing file weight, I do not feel it is really necessary because you already have Ps.
I. A test method
Let me spam you with an old test I did several years ago. It is in Spanish, please use google translate for now. ...
I optimise images for web almost everyday.
Optimisation should always be the last step. Why?
Photoshop adds metadata when exporting files even if you optimise the source file. So you have to process the final file again.
whenever you resize an image you're essentially creating a new file. The color table might change, the pixel color at a specific ...