Select More from the navigation menu.
Select Settings and privacy.
Select Accessibility, display, and languages.
Select Accessibility.
In the Media section, select the checkbox for Receive image description reminder.
If you find yourself forgetting to add image descriptions to your GIFs and images, you’re not alone. To help you remember, you can set a reminder that will tell you when image descriptions are missing. Then you can go back and add the descriptions before Tweeting.
Once you turn on this setting, it will be enabled for your account across all platforms. Setting the reminder is the same on Android, iOS, and web. Here’s how:
Select More from the navigation menu.
Select Settings and privacy.
Select Accessibility, display, and languages.
Select Accessibility.
In the Media section, select the checkbox for Receive image description reminder.
Now, the next time you try to post a Tweet with one or more images that are missing a description, you’ll get the reminder below.
When you select Add a description, the image description field will open and you’ll be able to write your description. If you select Not this time, your Tweet will post without an image description.