title: Is there a limit to the length of metadata values in Google Cloud Storage?
body: <p>When uploading a file to Google Cloud Storage, there is a custom data field <code>metadata</code>.</p>
  
  <p><a href="https://googlecloudplatform.github.io/google-cloud-node/#/docs/storage/1.0.0/storage/file?method=setMetadata" rel="noreferrer">Google's example</a> is fairly short:</p>
  
  <pre><code>var metadata = {
    contentType: 'application/x-font-ttf',
    metadata: {
      my: 'custom',
      properties: 'go here'
    }
  };
  
  file.setMetadata(metadata, function(err, apiResponse) {});
  </code></pre>
  
  <p>Is there a maximum for how big GCS will allow for the metadata object, should I wish to store manifests of tar and zip files, or a few hundred KB in there? </p>