chrome/common/extensions/docs/templates/articles/manifest/key.html

   1 <h1 id="key">Manifest - Key</h1>
   2
   3 <p>
   4 This value can be used to control
   5 the unique ID of an extension, app, or theme when
   6 it is loaded during development.
   7 </p>
   8
   9 <p class="note">
  10 <b>Note:</b> You don't usually need to
  11 use this value. Instead, write your
  12 code so that the key value doesn't matter
  13 by using <a href="http://developer.chrome.com/extensions/overview#relative-urls">relative paths</a>
  14 and <a href="http://developer.chrome.com/extensions/extension#method-getURL">extension.getURL</a>.
  15 </p>
  16
  17 <p>
  18 To get a suitable key value, first
  19 install your extension from a <code>.crx</code> file
  20 (you may need to
  21 <a href="https://chrome.google.com/webstore/developer/dashboard">upload your extension</a>
  22 or <a href="http://developer.chrome.com/extensions/packaging">package it manually</a>).
  23 Then, in your
  24 <a href="http://www.chromium.org/user-experience/user-data-directory">user
  25 data directory</a>, look in the file
  26 <code>Default/Extensions/<em>&lt;extensionId&gt;</em>/<em>&lt;versionString&gt;</em>/manifest.json</code>.
  27 You will see the key value filled in there.
  28 </p>