Brand-created Facebook posts that include images earn 87% of all engagement.
Tweets with images earn nearly 20% more clicks, nearly 90% more favorites, and 150% more retweets.
480 pixels wide and max 480 pixels high is optimal for most social media.
Typically you don't have to write any text in a post, so the created picture can stand on its own, but if you want to make a clickable link you need to add that as text.
Avoid content longer than a normal screen, as e.g. Twitter will scale down such pictures, worst case making them unreadable.
If you insert an animated GIF or embedded video it will become static, as the generated picture is always in PNG format.
If you copy content from another site, it's likely that pictures won't show due to cross domain restrictions. To solve this, click the "Source code" button on the original page and copy/paste the picture URL to a new browser tab, save the picture and upload to Picit.
You can apply Bootstrap CSS classes to the content, to style it.
Currently bullet and numbered lists don't work.
You are fully responsible for using content that you are allowed to use.