A typical marketplace listing starts the same way: you snap a photo of the couch, the bike, the used stroller, right where it's sitting — usually inside or just outside your home. If your phone had location services on for the camera, that photo's file carries the exact GPS coordinates of where it was taken, embedded and readable by anyone who downloads the original image and checks its metadata.
Unlike a vacation photo, a listing photo is taken specifically where you live, and it's specifically meant to be seen by strangers you've never met — often people you're about to arrange a cash pickup with. That combination makes it one of the more concrete, everyday cases where GPS metadata isn't a theoretical risk.
Sometimes, but you can't count on it. Some marketplace apps strip metadata from photos uploaded directly through their mobile app, but the same protection doesn't always apply to photos uploaded through a desktop browser, attached via a cross-posting tool, or sent to a buyer directly outside the platform (a text message with "here are more photos"). Policies and behavior also change between app updates, so what was true last year isn't a guarantee today.
Once a photo has been downloaded by a buyer, there's no way to reach into their copy and remove anything. Going forward, the fix is simple: check every listing photo with Nullframe's View mode before it goes live, and use Remove mode to strip it in one step — entirely in your browser, nothing uploaded.