I have uploaded several images with 800X800, which have been scaled down to 600X600, so loosing its crispness (sharpen) - for example the text on the bottom gets blurred.
So I wanted to replace them with a 600 size (with “save for web in Photoshop”), but I got this error: “The uploaded image file could not be converted.”
What is the minimum size to upload, and why can’t I use the size that is going to be used in the end?
Thank you in advance and keep up the good work.