Facebook event photos not uploading
If you're using adblocking software, turn it off or make sure that Facebook is included as an exception. Try uploading the original photo instead of an edited version. Editing photos (example: with iPhoto or Photoshop) before uploading them may cause the upload to fail. Check the photo format. Try only uploading JPEG, BMP, PNG, GIF or TIFF files.Facebook events limit the type of information that you can include when creating an event. You can add photos and videos using the event wizard during initial creation, or you can add media after the event has been created through the event page. To add an attachment that isn't a photo facebook event photos not uploading
The Event Cover Photo displays at 784 x 295. Facebook Event Page Timeline Photos. Images on an event timeline fit within a box with maximum dimensions of 470 x 394. If you want to use the maximum amount of available space, use an image of those proportions. If you upload a horizontal (landscape) image, it will span across 470 px.