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adactio/Look ahead pre-parser test

Last active December 19, 2015 15:09
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I'd like to know if browsers that have a "look ahead" pre-parser for images will start downloading foo.png ...even if they support svg.
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Look ahead pre-parser test
<!DOCTYPE html>
<title>Test</title>
<object data="foo.svg" type="image/svg+xml">
<img src="foo.png">
</object>
@csswizardry
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A look at the waterfall chart shows that Chrome certainly appears to download both. I made a really crude demo out of some images I grabbed off my site: http://jsfiddle.net/csswizardry/JwmAP/show/

@igrigorik
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@adactio all browsers have look ahead logic nowadays.. So I'm not sure what / why the focus on that specifically.

Having said that, using @csswizardry's example, WPT run for Chrome: http://www.webpagetest.org/result/130711_N3_607c236d5ac69b627969bc249d407b95/1/details/ (yes, it downloads the png)

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