Twitter has officially added support for Alternative Text (alt text) which will help make images accessible to visually impaired users. Upto 420 characters can be added to describe an image that can be added as soon as it starts getting uploaded.
The feature can be enabled by selecting the “compose image descriptions” option in the accessibility settings section of the app. Previously, workarounds like Alt Text Bot were used to post descriptions for images.
Twitter has also extended its platform products to the REST API and Twitter cards which will help support clients like EasyChirp, Chicken Nugget and The Qube, designed specially for visually impaired users.