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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

I’m not worried about you. It’s the other guy.

My teenagers are getting that look in their eyes. No, not that look. The look that says, “Dad, I really want to learn how to drive!” So, I’ve started teaching them, just a little at a time, so that when that day comes, they’ll be absolutely as prepared as possible to survive a simple drive […]

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Fix performance issues fast with PRIORITAH!

You may not have the authoritah that Cartman had, but when those nasty website performance issues hit, you have to have “prioritah!” the ability to accurately prioritize those issues, so they get addressed and fixed in short order and in the right order. Most web property owners don’t know what the problems that affect website […]

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How Home Energy Efficiency Relates to Web Performance Responsibility

Remember NetZero? I was a customer way back in the day. I also remember some Wall Street analyst commenting on the company when it went public during the dot com bomb: “Why would you name a company after its bottom line?” No idea who said that, but can you believe the company still exists?!? Wow! […]

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Performance Tools and Half of a Plumber

Needing a plumber is never fun, and always stressful. But when there’s a water or sewage problem, you want it fixed right away. When you call the plumber, you want three things: A prompt response, even at 3am on Christmas morning The plumber to figure out and tell you exactly what’s wrong The plumber to […]

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The Surprising Thing about Pregnancy and Performance

When you or our loved once find out you’re pregnant, you start visiting the doctor and getting sonograms as soon as possible, right? You don’t wait until the baby is born to check things out. So, when you’re “pregnant” with a new website or web app, why would that be any different? Why would you […]

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What Orange Juice Can Teach You About Web Performance

When you set out to improve the performance of any process, one of the first things you consider is the concept of efficiency. According to Webster’s, efficiency is defined as “the ability to do something or produce something without wasting materials, time, or energy.” In the web perf world, there’s not a whole lot of […]

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Detected and Optimizing Mismatched Image Formats

Serving the wrong image type can really hurt web performance. An improperly saved image can waste bandwidth and delay the page load time. In this blog post, I’ll show how you can use the file and grep commands to quickly, easily, and automatically find mismatched images that look like one image type but are actually […]

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Connect-JS Talk: Optimizing Front-end Web performance like a rockstar

I recently spoke at Connect-JS, an awesome JavaScript conference held in Atlanta. They had an incredible line up of speakers and I was honored to be apart of their inaugural year. There was a large turn out, and while less intimate than smaller conferences I've spoken at like JSConf, Connect-JS was a lot of fun […]

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Content Detection: A wretched hive of scum and villainy

A few days ago, I wrote about how the BBC was serving a BMP image as a JPEG. Several people have asked me why would this even work at all? The file extension and the MIME Type both implied it was a JPEG, but the file wasn’t a JPEG. How could the browser even render […]

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From Performance Issue to Bug to 3 New Features

“It has to be a bug” I thought. “This makes absolutely no sense!” We were about to go live with a major new product, and I had just found what looked like a show-stopping bug. But it wasn’t a bug. In fact, it was something so odd and cool, I ended up creating 3 new […]

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