Justin Bieber poster

4:3

1600x1200
1400x1050
1280x960
1024x768
800x600

16:9

2560x1440
1920x1080 (1080p)
1600x900
1280x720 (720p)

16:10

2880x1800
2560x1600
1920x1200
1680x1050
1440x900
1280x800

Apple

Retina iPad
Non-retina iPad
iPhone 6
iPhone 6 Plus
iPhone 5/5S (& iPod)
iPhone 4/4S/iPod
Older iPhone & iPod

Blackberry

360x480
320x240

Google Android

1080x1920
1280x800
720x1280
540x960
480x854
480x800
320x480

Netbook

1366x768
1024x600
800x480

Playstation

960x544 PS Vita
480x272 PSP

Windows Phone 7/8

768x1280
720x1280
480x800