If you're an instance owner, please make sure your emoji use text descriptions (alt text, shortcodes) that are descriptive and suitable for screenreaders.
For example, "SmilingCat" or "smiling_cat" will work great, but "smilingcat" may cause problems because the screen reader will not know where to put the space.
When you write hashtags, remember to use CamelCase (where each word has a capital letter).
This makes it much easier for blind and partially-sighted people's screen reader apps to read the hashtag out loud, and makes your message much more accessible.
As some people have pointed out, Mastodon has a tendency to suggest non-CamelCase versions of hashtags automatically.
WORKAROUND: Instead of pressing Enter to get rid of a hashtag suggestion, press Space instead. This should leave your CamelCase hashtag intact.
This is still a frustrating bug though, and if you want it corrected please give a thumbs up to this issue in the Mastodon Git:
If you post images in Mastodon, you can make them more accessible to blind or partially-sighted people by adding a text description.
After you've attached the image, click "Edit" and write the description, then click "Apply".
If there's text in the image, you can use Mastodon's text recognition system to convert it into a description by clicking "Detect text from picture". (The system isn't perfect, and you may need to tweak the text.)
@feditips aye! This has been an annoying bother since day 1! Hoping to get this small change addressed to make a big difference for readability 👍
@feditips Meanwhile, as a stopgap:
Instance Admins can change that, though it has to be done for every tag.
Go to Preferences - Moderation - Hashtags
Look for the hashtag you want to change, and click it.
You can now change the capitalisation of letters.