title: How to upload thumbnail images to YouTube channels using YouTube API (V3)
body: <p>I would like to  add thumbnail images to YouTube channels using YouTube API (V3).</p>
  
  <p>For example:  The image at the top left corner found here:
  <a href="https://www.youtube.com/channel/UCO7KVucOJgWRuE9P4mrv8yw" rel="nofollow">https://www.youtube.com/channel/UCO7KVucOJgWRuE9P4mrv8yw</a></p>
  
  <p>Listing channel resources:
  <a href="https://developers.google.com/youtube/v3/docs/channels/list" rel="nofollow">https://developers.google.com/youtube/v3/docs/channels/list</a></p>
  
  <p>The path to thumbnail Images are stored in the channel snippet</p>
  
  <pre><code>"snippet": {
  "title": "HannahInJapana",
  "description": "My name is Hannah and I am living in Osaka, Japan with my husband and daughter Ellie. Living and being a mom in a foreign country comes with both challenges and excitement. I hope to both share my experiences with you and meet people who are making their way in foreign countries with young children.",
  "publishedAt": "2011-03-25T09:58:45.000Z",
  "thumbnails": {
  "default": {
  "url": "https://yt3.ggpht.com/-DqmCXHftE-I/AAAAAAAAAAI/AAAAAAAAAAA/3k1uCwnmlu4/s88-c-k-no/photo.jpg"
  },
  "medium": {
  "url": "https://yt3.ggpht.com/-DqmCXHftE-I/AAAAAAAAAAI/AAAAAAAAAAA/3k1uCwnmlu4/s240-c-k-no/photo.jpg"
  },
  "high": {
  "url": "https://yt3.ggpht.com/-DqmCXHftE-I/AAAAAAAAAAI/AAAAAAAAAAA/3k1uCwnmlu4/s240-c-k-no/photo.jpg"
  }
  },
  </code></pre>
  
  <p>First I need to be able to upload my thumbnail image via the YouTube API , then retrieve  the URL for the images which I can later set ….</p>
  
  <p>For example: </p>
  
  <pre><code>    channel.Snippet.Thumbnails.Default.Url = "https://yt3.ggpht.com/-DqmCXHftE-I/AAAAAAAAAAI/AAAAAAAAAAA/3k1uCwnmlu4/s240-c-k-no/photo.jpg";
      channel.Snippet.Thumbnails.Default.Height = 120;
      channel.Snippet.Thumbnails.Default.Width = 800;
  </code></pre>
  
  <p>My problem is there is nowhere in the YouTube API documentation that states how to upload a channel thumbnail…</p>
  
  <p>The document below  states how to upload a thumbnail for a video resource but makes no reference to channels
  <a href="https://developers.google.com/youtube/v3/docs/thumbnails" rel="nofollow">https://developers.google.com/youtube/v3/docs/thumbnails</a></p>
  
  <p>How can I upload channel thumbnail images using YouTube API (V3)?</p>
  
  <p>It appears that channel thumbnail images are linked to Google+ accounts.</p>
  
  <p>Should I be updating the Google+ profile image instead?</p>
  
  <p>The Google+ API doesn't seem to support updating profile images</p>