If you want your social media images to maintain their proportion and clarity in order to make an impact, you need to correct sizes for each social channel. Each network requires different sizes for perfect and clear images and they are constantly evolving so keep it up with them can be time consuming and frustrating.
Following specific image size recommendations is most important in the following two areas:
- Images that represent your brand throughout a social network (profile photos, logos, cover photos and banners) should be sized appropriately so you always make a good first impression when people encounter your brand.
- Images that you use in a social media ad or sponsored update should be sized appropriately so you make a great impression with paid media.
Do you need to be concerned with image size every time you post an update to a social network? Not always, as most social networks do a good job of resizing images you give them to fit their layout. If you’re posting content that you want to do particularly well with social shares, keep recommended image sizes in mind.(Source)
To help, here is the Ultimate Guide to Social Media Image Sizes.
Image Source: Flickr