Resolution of uploads. Is it too much? - Forums

Ultrawide	16:9	16:10	4:3	5:4
2560 × 1080	1280 × 720	1280 × 800	1280 × 960	1280 × 1024
3440 × 1440	1600 × 900	1600 × 1000	1600 × 1200	1600 × 1280
3840 × 1600	1920 × 1080	1920 × 1200	1920 × 1440	1920 × 1536
	2560 × 1440	2560 × 1600	2560 × 1920	2560 × 2048
	3840 × 2160	3840 × 2400	3840 × 2880	3840 × 3072

Wide	Ultrawide	Portrait	Square
All Wide	All Portrait
16 × 9	21 × 9	9 × 16	1 × 1
16 × 10	32 × 9	10 × 16	3 × 2
	48 × 9	9 × 18	4 × 3
			5 × 4

Gandalf – 8 years ago6504

Generally the resolution should be as high as possible. People can always scale them down for their own use, but scaling up will cause a loss of quality. If you set a wallpaper on your desktop it is usually scaled down automatically.

However the big exception is, that any wallpaper you upload should look good at full resolution, i.e. at 100% zoom! For photos this is very often not the case in their raw resolution, because most cameras cause some level of grain. In that case you should try to get rid of the grain and you may have to scale the image down far enough for the grain to disappear.

TL;DR Scale it down as little as possible but as far as necessary to get a good quality.

If you upload your own photos you should also read this thread about uploading your own creations.