I tried in 72 dpi first. It should be less than 100kb? Facebook never has any image posted over 100kbs? I just checked out FB has images with 416kbs and more. So what is the problem? Is this only about texts? Sorry I am not very new to this, when I posted some good quality images, photographs I mean the quality almost stays as good. But documments I create with texts are so bad, color looks messed up too. and I didn't get how I use web colours. I tried copying from website but I see different colour on my pc, sad. I think affinity should help more in these things, uploading to social media is very important.
Thank you for your answer John, appreaciated