Hi,
I'm clearly not expert in photo manipulation but I'm learning and I hope you can help me with the following issue: I've uploaded an image that I put together in Affinity photo. original image size was 7250*2417 and I used the inpointing tool to first get rid of some snow effects in the photo, then I added some text and a logo and exported as 1000 * 333 at 90%. I uploaded to FB as a cover photo, but the image looks grainy. The text and logo in particular are grainy. Exporting at same size but 100% is the same. you can see what the text looks like here: https://d.pr/i/kyvq8Z
Would greatly appreciate your help in understanding how I can improve the quality of this image while keeping within the image size restrictions of sites like FB.
Thanks for your attention.