I used Gimp to create a quote image and I uploaded it to Facebook. I made sure to only use web-safe colors, and the fonts I'm using are Impact Condensed and Arial. However, the uploaded image drastically loses quality and the fonts aren't sharp/surrounded by a fog/are blurry:
If you open the images in a new tab, you can see the difference between the two clearly.
I tried enabling/disabling Interlacing (Adam7) and the other export settings, but I haven't been able to make a difference. All help appreciated.