I don’t know how I missed this, but Apple has started encoding photos taken with iPhones in a format called HEIF (high efficiency image format), while the entire rest of the world uses JPEG. I learned this while trying to use an iPhone photo on this blog, and WordPress doesn’t recognize HEIF without a plugin.
Turns out there’s a not-too-tough workaround (in MacOs’s Preview app, save the HEIF as a JPEG). But…(a) I had to figure it out and (b) it’s now one extra step between my photos and publishing. What the heck was wrong with JPEG?
I know, I know, progress and all, but this is why people get tired of using modern tech. Just when you think you’ve got it, the rules change.