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Screenshot of Mastodon showing the Edit Media dialogue box with a preview (16:9) of an image being added to the post. The instructions in the dialogue read: “Click or drag the circle on the preview to choose the focial point which will always be in view on all thumbnails. Describe for people who are blind or have low vision.” Under the instructions is a text box where a description of the image being added has been included: “A post by @gastarbajterica@dju.social: @aral Thanks! How can you add ALT text on Mastodon? Does it depend on the instance?” Under that is a link: “Detect text from picture”. There are 1378 characters remaining in the alt text box. Finally, there’s an Apply button.

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Screenshot of Mastodon showing the Edit Media dialogue box with a preview (16:9) of an image being added to the post. The instructions in the dialogue read: “Click or drag the circle on the preview to choose the focial point which will always be in view on all thumbnails. Describe for people who are blind or have low vision.” Under the instructions is a text box where a description of the image being added has been included: “A post by @gastarbajterica@dju.social: @aral Thanks! How can you add ALT text on Mastodon? Does it depend on the instance?” Under that is a link: “Detect text from picture”. There are 1378 characters remaining in the alt text box. Finally, there’s an Apply button.
https://s3-eu-central-1.amazonaws.com/mastodon-aral/media_attachments/files/109/856/959/992/324/260/original/ecf0adbdaa94e260.png

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Aral Balkan (aral@mastodon.ar.al)'s status on Monday, 13-Feb-2023 19:34:30 JST Aral Balkan
in reply to

Here’s how you add alternative text (“alt text”) to your images on Mastodon so people who use screen readers can also take part.
1. Add an image to your post.
2. Press the Edit button.
3. Add your alt text.
#mastodon #fediTips #altText #alternativeText #accessibility #a11y

In conversation Monday, 13-Feb-2023 19:34:30 JST from mastodon.ar.al permalink