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Discussion on: Loading Images with Web Workers

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Scott Newcomer

Thanks for the article! Do you happen to know what browser specifics caused performance problems when you don't load images with web workers?

Take lazy loading images as an example. Downloading images isn't render blocking. However, without lazy loading, FMP and/or TTI for the site I work on was 2-3 seconds greater on a normal connection.

I'm not sure which steps (decoding/resizing/rasterization) happen off vs. on thread. So, overall I'm still figuring out what browser specifics are blocking/causing performance problems...

developers.google.com/web/fundamen...