Marketers are contending with two very crucial realities concerning modern audiences: Attention spans have gotten shorter (so you have less time to hook your audience), and people are engaging with images now more than ever before. As humans, of course, we respond to visual stimuli naturally, but as technology has advanced and viewing channels have multiplied, images have become an integral part of daily life for everyone. So, to cut through the advertising competition, you need to make image optimization a core element of your social media marketing strategy
This is the process of ensuring all images you upload to a particular channel are of the highest quality while at the same time being the smallest file size. This ensures quicker page-load times, which translates to reduced bounce rates. Regarding social media marketing, image optimization is as vital as any other channel, especially with the rise of new visual platforms like Instagram Stories. Below we list some best practices and guidelines for image optimization for all the major social networking sites.
The profile image appears on the lower left of the cover photo, and this should be a minimum of 180x180 pixels, although it will appear on screen as 170x170 pixels. The photo thumbnail of this profile image, which is displayed at various other locations on Facebook, displays at 32x32 pixels. Despite its smaller size, you'll want to put a lot of effort into your profile image. After all, this is the visual that people will see most often, be it on your timeline or when you post on the wall or comment on posts. Best to make sure your profile image captures the essence of your brand.
Also, any image you share in a link on Facebook should be uploaded at a size of 1200x628 pixels.
In-stream photos are another matter entirely. If you want your image to appear expanded in the stream, the minimum requirement is to upload at 440x220 pixels. The maximum to appear expanded is 1024x512 pixels. On the other hand, if you want your photo to appear collapsed (and have Twitter shrink it to a smaller size) then to do this and still maintain quality requires a minimum of 506x253 pixels.
Any thumbnails that appear on your IG account will display at 161x161. Make sure these are also formatted in the 1:1 aspect ratio. As for photo sizes, IG has allowed for larger image sizes (1080x1080 pixels), although the platform still scales them down to 612x612 pixels.
If you are focusing on a brand/company page, then the logo you use instead of a profile image should be 300x300 pixels in PNG, JPEG or GIF formats with a max 4 MB file size. The recommended background image size is 1536x768 pixels uploaded in a PNG, JPEG or GIF with a max file size of 4 MB.
You can also upload a hero image, which is a large image displayed below the profile image. This image should speak to your company and industry, as it will be one of principle things potential clients and employees see. The guidelines for the hero image are 1128x376 pixels in a file size of 2 MB in PNG, JPEG or GIF formats.
Below the hero image, you can add a business banner (646x220 pixels; 2 MB file size in PNG JPEG or GIF) and a square logo, which should be 60x60 pixels with the same file requirements.