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Only preload .woff2 font files #4728

merged 1 commit into from Apr 3, 2018


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alexgibson commented Apr 3, 2018

I currently have a few pages of MDN listed on the performance dashboard I'm building for our team. Because I'm spending a fair bit of time looking at this, I was intrigued to see a noticable up-tick in both load times and bytes in, as you can see here:

screenshot-2018-4-3 web performance dashboard

After a bit of digging in the web page test result, I noticed that both .woff and .woff2 files are being loaded, which seemed like a bug:

screenshot-2018-4-3 webpagetest test details - california dev mozilla org en-us - 04 03 18 03 25 41

I think this PR should fix the issue because:

  • Any browser that supports .woff2 should no longer need .woff files.
  • Any browser that supports rel="preload" should also support .woff2.

@jwhitlock jwhitlock requested a review from schalkneethling Apr 3, 2018

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schalkneethling left a comment

That makes a lot of sense. Thanks @alexgibson

@schalkneethling schalkneethling merged commit ed36a7c into mozilla:master Apr 3, 2018

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@alexgibson alexgibson deleted the alexgibson:font-preload branch Apr 3, 2018


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alexgibson commented Apr 6, 2018

Looks like it worked, thanks @schalkneethling 👍

screenshot-2018-4-6 web performance dashboard

(my first contribution to MDN 🍻)


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schalkneethling commented Apr 6, 2018


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escattone commented Apr 6, 2018

Nice, thanks @alexgibson!

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