When publishing Sponsored or Native Posts, you can upload images of almost any size and aspect ratio! For best results, we recommend to use images up to Full HD (1920x1080 pixels), with an aspect ratio between 16:9 and 4:3. Orientation is adjusted to either portrait or landscape automatically.
In any case, images should be at least 600x400 pixels large to look good regardless of the theme you have chosen for your Wall.
For the post text, we recommend staying below 160 characters. Longer texts may be cut off depending on the chosen theme.