Specifications for images on social networks are constantly evolving, but digital marketing agency Mainstreethost has got you covered.
The Buffalo, N.Y.-based company created an updated infographic with dimensions and tips for Facebook, Twitter, TweetDeck, Google+, Pinterest, LinkedIn, Instagram, Tumblr and YouTube.
The infographic appears below, and the ?pro tips? from Mainstreethost follow:

Facebook: Sharing images and links from other sources allows you to post relevant content to your page when you don?t have time to create your own. It?s also a great way to share content contributed by your audience or other businesses and keep promotions to a minimum.
Twitter: Cover photos are a great place to describe what your brand does, display a new product or use as free advertising space. TweetDeck: Some of your header image design will be covered by your profile photo and bio in TweetDeck. So if you have important text or imagery that you?d prefer be seen at all times, be careful about centering those elements.
Google+: Sharing relevant content in Google+ Communities is a great way to raise brand awareness, promote your page, connect with other users, receive quality post engagement and potentially get traffic to your blog/website. But don?t overdo it: When you post to a Google+ Community, it also shows up on your profile, so sharing the same post to several Communities tends to look spammy.
Pinterest: Ensure that your first two or three boards are related to your indust...