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Google's Code Labs are Amazing

I’ve really been enjoying going to the Code Labs, especially Preload critical assets to improve loading speed.

Here are some tips that you might help you get the most out of them:

  • Play around with the Glitch code playground. Running your app is not so obvious. You have to click the lower right button to “View App” and then click the expand icon.
  • Or just type your URL. If your workspace is named “moored-marionberry”, then the URL is
  • Be sure to use an anonymous Chrome browser so that your performance audits are not skewed by browser plugins.
  • Take screenshots to compare the “before changes” results to the “after changes” results of the network and other Chrome dev tool tabs.