How to upload a photo to an activity?

Uploading media is not available to vanilla developers. You could insert links to images in the activity description.

Hey ​@Jan_Mantau ,

thanks a lot for the quick clarification! That helps me understand the current limitations of the public API.

One follow‑up question: What are the requirements or criteria for gaining access to the partner‑level functionality that allows uploading photos directly to an activity (as platforms like Zwift or Rouvy do)? If there is an official process, application form, or a specific contact at Strava for requesting access to these partner capabilities, I’d really appreciate a pointer in the right direction.

And one more thing I’m curious about: If I include a Markdown image tag in the activity description via the API (for example: ![Intervals](https://example.com/my-image.png)), will Strava render the image inline inside the activity description, or will it simply display the text or treat it as an external link? I want to understand whether this could be a viable workaround for showing a workout summary image inside the activity.

Thanks again for your support!

Hi ​@Jan_Mantau , I actually replied earlier, but for some reason my message never appeared — so I’m trying again.

I have two follow‑up questions:

Does Strava support any form of Markdown inside the activity description? For example, is it possible to embed an image preview via a URL, or are plain text links the only supported option? My goal would be to at least show a small preview image if direct media uploads are not available.

Is there any documentation on the requirements or process for accessing the “internal” API that platforms like Zwift or Rouvy seem to use to attach workout images directly to an activity? I assume this is restricted, but I’d like to understand whether there is an official partnership program or technical pathway for third‑party developers.

Thanks again for your help — I appreciate any additional clarification you can provide.