Background images on Twitter are limited to being 800 KB in size and must be a JPG, PNG, or GIF file. As long as an image meets these requirements it should be able to be uploaded to a Twitter account. Currently, however, some background images that fall within these specifications are not able to be uploaded. One of two issues occur when these images fail to upload properly:
If you are encountering either of these issues when uploading a background image, please continue reading.
We're not exactly sure why this is happening at the moment, but you can help! If you are experiencing this problem, you can assist us by leaving a comment below with the following information:
This information will give us some examples to work with and will give us a better understanding of how many users are experiencing this problem. We're very sorry about any inconvenience this issue causes while we work on a fix. Check back here in the future for updates or follow @Support to receive timely updates about Twitter issues. Thanks!
The Twitter Support Team