Done. I've added the following screenshot quality settings in the next update:
- Bad
- Average
- High
- Very High
- Uncompressed
Where Average is the default (original) value. Though I'm not sure about adding Uncompressed, because the size of Uncompressed screenshots is 2x to 3x the size of Very High, with a hardly visible gain in quality. I'm afraid some people might set it to Uncompressed without really knowing what it means and end up spamming their harddrive with unnecessarily large screenshots. To protect these people from making that mistake, it would make sense to limit the quality setting to Very High, I think. Plus sites like imgur.com end up compressing the screenshots anyway.
Here are 3 screenshots in 1080p:
High (435 KB):
https://puu.sh/HaMgt/485273fa36.jpg
Very High (653 KB):
https://puu.sh/HaMgT/3d0aada795.jpg
Uncompressed (1700 KB):
https://puu.sh/HaMh5/53c9831211.jpg
tl;dr we shouldn't add uncompressed quality and stick to very high as the max quality.