a11y Twitter is a Chrome extension developed by nickytonline. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. This free program aims to promote accessible tweeting on Twitter by providing simple reminders.

The main feature of a11y Twitter is its ability to prompt users to add alt text before they send out a tweet. Alt text, also known as alternative text, is a description added to images to make them accessible to visually impaired individuals who use screen readers. By reminding users to add alt text, a11y Twitter ensures that tweets with images are inclusive and can be understood by everyone.

The extension is designed to be simple yet effective in promoting accessibility on Twitter. It serves as a helpful tool for users who want to make their tweets more inclusive and reach a wider audience. With a11y Twitter, users can easily incorporate alt text into their tweets, making the platform a more accessible space for all users.