Speak Alt Text on MacOS

I&rsquo;ve been using Bluesky a lot lately (I&rsquo;m @rich.lafferty.ca there), and one of the conventions there, like on Mastodon, is that images should have alt text. 1 I configure my account to require it so I don&rsquo;t forget, especially on mobile. But one challenge with alt text is that you don&rsquo;t know what it will sound like to someone using speech-to-text, and while that&rsquo;s not…