https://techcrunch.com/2017/08/16/pinterest-users-can-now-pinch-to-zoom-on-photos-in-the-app/

Pinterest is adding a new feature today that allows users to pinch a photo to zoom in and out on various Pins, matching a feature that’s available on a lot of other services, like Instagram.

Pinterest is trying to be a central hub of high-quality photos and videos centered around ideas and products, but this still more or less exemplifies that the ability to manipulate photos within the app has started to become table stakes for sites like Pinterest. It also has to refine its visual search product as more and more companies offer similar products, like Google (ironically also called Lens, the same name as Pinterest’s camera search product). As the company becomes increasingly focused on mobile and discovery centered around photos, users will start expecting the kinds of behaviors that exist on other services (like Instagram) to exist on Pinterest.