Poshmark launches first app redesign in 15 years but sellers revolt over return of 3:4 photo aspect ratio

Poshmark has rolled out its first major app refresh in 15 years, introducing an algorithmic “For You” discovery feed, a consolidated seller tools dashboard, and a shift to larger 3:4 portrait image layouts, but the photo change has sparked immediate backlash from sellers who say the new ratio crops their existing listings and adds significant rework across thousands of images. The 3:4 aspect ratio was previously tested last year and reversed after similar seller outcry, with Poshmark promising in January to give sellers adequate lead time before reintroducing it, a commitment sellers say was not honored. Threads on r/Poshmark and r/BehindTheClosetDoor are filled with sellers threatening to protest by enabling vacation mode and others saying the change is accelerating their move to cross-list on competing platforms like Mercari, eBay, and Depop.