Providing conference solution logos

Note: This functionality was built for conference providers specifically, and was originally available as Calendar conferencing add-ons.

In your add-on manifest, you may specify a distinct conferenceSolution[].logoUrl for each conference solution your add-on defines. These conferenceSolution[].logoUrl images are used directly in the Google Calendar user interface to visually identify the conference solution.

Since these logoUrl images are used within Calendar directly, for performance reasons the images cannot be hosted on at any location. They must be present on Google's infrastructure. To achieve this, you can upload your add-on's logo image to Google Photos.

Note: This restriction only applies to the conferenceSolution[].logoUrl images defined in the Conference solution section of your manifest. The add-on's primary common.logoUrl image is used to identify the add-on itself in host applications, and may be hosted outside of Google Photos.

To obtain a conferenceSolution[].logoUrl you can use in your manifest, do the following:

1. Upload the logos to Google Photos. These images need to stay where they are for the lifetime of the add-on. Therefore, be sure to use a Google account can be transferred to a new owner if you leave your current organization, rather than a personal account.

   The images uploaded should be sized to 96 x 96 dp.

2. For each logo in Google Photos, obtain a public URL for the image with the following steps:
   1. Select the image.
   2. Click the icon in the top bar.
   3. Click the icon to add the image to a publicly-viewable album and provide you a link to it.
   4. Click the generated link to open the album.
   5. Click on the logo image to open it in a full-screen view.
   6. Right-click on the image, then select Copy image address. This is the URL you need to provide in your manifest.
3. Add each URL you obtain to the appropriate places in your add-on manifest.

Caution: The URLs created with this process are permanently stored with user Calendar events when they create conferences using your add-on. For this reason, once you've created logo images and have their URLs, you must avoid moving or deleting the images. A missing logo image results in default icon being used for your add-on and its solutions.