Hello everyone, I’m trying to upload or attach a photo to an activity through my own application — or alternatively link an external image, if Strava supports embedding images from external sources.
The goal is to achieve something similar to what Zwift or Rouvy activities display: a main workout image that visually represents the completed session.
I’ve checked the public API documentation, but I haven’t found a clear description of how to upload an image directly to an existing activity (not as a user photo and not via the standard /uploads endpoint). Before I continue experimenting, I’d like to know whether Strava currently supports this for third‑party developers, and if so, which endpoint or workflow should be used.
Any guidance, examples, or official references would be greatly appreciated.