Lovely red-white tulips in this image took by Kwang Mathurosemontri and shared from her courtesy under CC0 license. The original image was made in vertical position, which means that is perfect for tablets and mobile devices, but I cropped it to fit really nice on desktop backgrounds too. So, if you'd like or need an image related to tulips check this one at optimal resolution for your device or project (blog article, app, webdesign project...).
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)