Social media image sizes change from time to time. Here is a nice visual outlining the most recent dimensions for top social media sites.
With the preference to their smartphones and the decline of traditional TV, people are spending more time on social media than ever before and marketers are taking notice. Now, is the Instagram Influencers time to shine. Check out these user projections and expected Instagram Influencer market growth over the next several years.
There are a lot of recommended post schedules out there, but few take into account a large amount of data across multiple sources. This infographic from SproutSocial shows the general consensus when it comes to posting on Instagram. Bottom-line, the data shows there is more engagement on weekdays (M-F) and during off-business hours (early am and later pm).