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Walrus 🏴 @
Ben Royce 🇺🇦 🇸🇩 That's actually a problem if you're on vanilla Mastodon with only 500 characters per toot and only 1,500 characters of alt-text per image. Your only chance would be to spread the transcripts across a massive thread.
If you regularly have to post images with well over 1,500 characters of text in them, you could move elsewhere in the Fediverse that offers more characters, but that's still federated with Mastodon. Examples:
- Misskey has a hard-coded limit of 3,000 characters.
- Sharkey has a configurable limit that defaults to 3,000 characters.
- Pleroma and Akkoma have configurable limits that default to 5,000 characters.
- Friendica and Hubzilla (I'm commenting from the latter right now) are limited to over 16.7 million characters by their databases.
- (streams) (where I post my images nowadays) and Forte are limited to over 24 million characters.
On all of these, you could put text transcripts into the post text body and maybe mention in the alt-text that the texts in the images are transcribed in the post itself.
The downside of this, however, is that your posts will exceed 500 characters. And this means you'll lose a whole lot of reach. There are lots and lots of Mastodon users who block everyone who ever posts over 500 characters at once at first strike because they want Mastodon/the Fediverse to be and remain a 100% pure microblogging "service" with no more than 500 characters.
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