Pinterest does a lot of SEO stuff that is interesting. For one of my boards that ranks #1 in Google I've found that the page Google indexes is quite a bit diff

Pinterest does a lot of SEO stuff that is interesting. For one of my boards that ranks #1 in Google I've found that the page Google indexes is quite a bit different than the one I see as a logged-in user. One of the differences is that they display the text content associated with the pin. This is also used as the image alt text, but then appended with a bunch of keywords. They also link to other people's boards which have names related to the images so it looks like "tags", but I have the feeling it is probably a mix of keyword stuffing/linking to other content for Google to follow. The page title is also adjusted to include something like, "237 Best ________ images in 2020" followed by the board name.