The calendar wallpaper above is in the 16x10 ratio, like you find on Macbooks, iMacs and MS Surface tablets and many others, but I have the wider HD 16x9 format in the link below, along with 4x3 "TV" ratio and TWO mobile versions: One for phones and another for tablets! One of them will fit your computer or mobile device, for sure. Here's the link:
For Mac: Save the image of your choice, go to Settings/Desktop, Screen saver/pick the your kitty as your wallpaper.
Mobile: Save to Camera Roll, Go to Settings, Wallpaper, and select the cat of the month as your wallpaper and lock screen.
Some examples of aspect ratios:
Wide/HD/16:9 - 1024×576, 1152×648, 1280×720, 1366x768, 1600×900, 1920×1080, 2560×1440 - HDTV
Wide 16:10 - 1280x800, 1440×900, 1680x1050, 1920×1200 - Macbooks, iMacs + MS Surface etc
TV 4:3 - 640x480, 1024x768, 1280x1024, 1440x1152 etc. - older monitors and laptops, mostly
The size shown in italics above is the actual image size that I've linked to, but as long as you pick the right ratio it will look GREAT on your monitor using "Stretch" or "Fit to screen" as your option when you set an image as your wallpaper.
Thank you so much for sharing and supporting these beautiful feral cats. Because of you, good things happen.
I appreciate comments and questions so feel free to leave a comment!