Social Network Branding
Do you have banners and icons for your business social networks?
If you do not, you should consider having them. It helps strength your branding online.
Lets say you got a Facebook Page for your business, you need to have a good-looking cover photo for your Timeline which will match your website theme, colors and logo. You can have a eye-catching photo or graphic image.
When you creating timeline image pay attention to dimensions.
Official Facebook cover photo size: 851 pixels wide by 315 pixels tall
Official minimum image dimension: 720 pixels wide
Profile icon size: 160 x 160 pixels, with a minimum image upload size of 180 x 180 pixels
Google cover photo size minimum should be 940px wide.
Google+ is 940 x 180 pixels
Google+ profile photo size 252 x 252 pixels
Image size 200 x 200 pixels. URL is optional and it requires that you host an image on a server FeedBurner can access. Only JPEG, GIF and PNG graphic files will work.
Twitter profile image 128 x 128 pixels
Your profile picture is viewable to visitors who are not logged into Twitter.
Suggested Twitter background image size 1024×760 ( the most common screen size ). Remember to keep it simple and not big size, that way it downloads faster.
You can use on the PayPal payment page a logo within 100KB size limit and File resolution: 75 (h) x 200 (w) pixels.