This is really what I wanted to use the Google Image API to do. But it's way too expensive. All I wanted was keywords for alt-text, dimensions for placeholder

This is really what I wanted to use the Google Image API to do. But it's way too expensive. All I wanted was keywords for alt-text, dimensions for placeholder, and the dominant colour for placeholder background. https://cloud.google.com/vision/ https://cloud.google.com/vision/ The price for that would be $7.50 per 1,000 images for the first million images. I have some 60,000 images on the site I run and don't happen to have $450 in loose change laying around (the whole site costs less than that to run each month). I guess I don't care about alt tags that much.