By Min Li Chan, Fritz Holznagel, Michael Krantz

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Very promising. They’ve come up with a new image format called WebP that cuts down the average image file size by 39%. The engines that run JavaScript code in modern web browsers have also been redesigned to process code faster than ever before. These fast JavaScript engines, such as Google Chrome’s V8, are now a core part of any modern web browser. That means the next generation of fabulously useful JavaScriptbased web applications won’t be hampered by the complexity of more JavaScript code. 18 Another technique that modern browsers like Chrome use to fetch and load web pages much more quickly is called “DNS pre-resolution”.

This list is stored and maintained locally on your computer to help protect your browsing privacy. If a match against the local list is found, the browser then sends a request to Google for more information. ) If Google verifies the match, Chrome shows a red warning page to alert you that the page you’re trying to visit may be dangerous. Risk 2: How vulnerable your browser is if it’s attacked Old browsers that haven’t been upgraded are likely to have security vulnerabilities that attackers can exploit.

It has to look each one up, using something called the Domain Name System. 147”) in order to get the information that you want (in this case, the Google homepage). com’s web page to that IP address. Google’s server at that IP address will then send back the requested web page to your computer’s IP address for your browser to display. indd 49 11/19/10 9:28 AM In many ways, fetching and loading a web page in the browser is not unlike making a phone call. When you make a phone call, you’d probably look up the number, dial, wait for someone to pick up, say “hello,” and wait for a response before you start the conversation.

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20 Things I Learned About Browsers and the Web by Min Li Chan, Fritz Holznagel, Michael Krantz


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