title: How to decode Google API access token
body: <p>I have created SPA login using Google api , which returns <code>access_token</code> and <code>id_token</code></p>
  
  <p>While it is relatively easy to decode the id token using the following code, on a Node.js backend, using <strong>google-auth-library</strong>: </p>
  
  <pre><code> gapiAuthLibrary.verifyIdToken({
          idToken: token,
          audience: GOOGLE_OAUTH_TEST_APP_CLIENT_IDD
      });
  </code></pre>
  
  <p>There is no clear way to decode access_token, which is much more reliable. </p>
  
  <p>What do I miss?  </p>