I POSSE and cross post a fair bit, but I often just do it manually. Helps with both formatting & alt-text on images. But this like I am relying on brid.gy. It works well for Twitter, so this is a mastodon test.
I hate to say this because I adore my fellow tweeps, but some of the least effective content on here right now are auto-posted tweets. They’re visually off-putting, and the content sometimes doesn’t translate well for this environment. If you’re going to cross-post to Twitter and Mastodon, perhaps consider doing so manually and adjusting accordingly. (Said with love :twitter:)