Filtered By Tag: CSS

Note: Archived Content

This is the archived version of the Zoompf blog. Since our acquisition by Rigor, all our new research and posts on web performance are being published on The Rigor Blog

Performance Implications of Opera’s Switch to WebKit

Opera recently announced that it was dropping its Presto layout engine and Carakan JavaScript engine and adopting WebKit and V8. Actually, Opera announced they were going to develop “[products] built using the open-source Chromium browser” of which WebKit and V8 are the most visible and well known components. This is a pretty amazing shift and […]

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Performance aspects of Google’s HTML/CSS Style Guide

Today Google released their HTML/CSS Style Guide. While it is full of great advice to help manage a growing code base among multiple developers, I thought it would be interested to review the web performance implications of each of its recommendations. Despite being a just style guide, nearly all of its rules had performance ramifications. […]

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Optimizing Gradients

Gradient backgrounds are a common visual element on modern websites. And while you can use browser specific CSS extensions to directly create gradient backgrounds with pure CSS the much more common method is to use an image. Traditionally, when a web designer wants to create a gradient to a webpage, they use a program like […]

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Zoompf Check #300! Or: Gateway’s got a problem…

People often ask how we discover new performance issues. Without a doubt the #1 way we discover new issues is simply by looking at websites and seeing how they work. Not a customer engagement goes by where we don’t find at least one new web performance issue that we add to our growing database of […]

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Browser Performance Problem with CSS “print” Media Type

I ran across an article today that shocked me. Geert De Deckere wrote how you can save an HTTP request by combining the CSS files for the print and screen media types. Wait, I thought. What? Why do I need to do this? What behavior is this correcting? I was very confused. Maybe you are […]

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