4K HD Wallpaper: Horse Silhouettes
This is Tanja Mikkelsen's work and from her courtesy the image can be downloaded free under CC0 license and use in desktop backgrounds, homescreen phones, blogs, apps, social media, content marketing, webdesign projects...
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)