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Lazy Loading Responsive Adsense Ads

You’ve been hard at work optimizing your site. You’ve already done things like lazy-loading Google Maps and been wondering if there was anything else you could do. For example, is there anything we can do to improve the loading of ads? Good news, there is some things you can do. You can respect the user’s mobile data plan by loading ads only when they are likely to appear in the viewport zone. You can also serve ads in the right … Read article “Lazy Loading Responsive Adsense Ads”

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Cooperative Scheduling with `requestIdleCallback`

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When is the Right Time to Think about Web Performance?

Web performance is vital, but lately I’ve felt that the topic has only been brought up by front-end developers, and only becomes a point of discussion at the end of a project. Subsequently, whenever I hear about solutions to trim down large websites, I can’t help but feel that these are merely suggestions or tricks that developers and engineers should employ after the initial design process has kicked off.… Read article “When is the Right Time to Think about Web Performance?”

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Using WebP Images

We’ve all been there before: You’re browsing a website that has a ton of huge images of delicious food, or maybe that new gadget you’ve been eyeballing. These images tug at your senses, and for content authors, they’re essential in moving people to do things.

Except that these images are downright huge. Like really huge. On a doddering mobile connection, you can even see these images unfurl before you like a descending window shade. You’re suddenly reminded of the bad … Read article “Using WebP Images”

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A Case Study on Boosting Front-End Performance

At De Voorhoede we try to boost front-end performance as much as possible for our clients. It is not so easy to convince every client to follow all of our performance guidelines. We try to convince them by talking to them in their own language, and explain the importance of performance for conversion or compare their performance to their main competitors.

Incidentally, we recently updated our site. Apart from doing a complete design overhaul, this was the ideal opportunity to … Read article “A Case Study on Boosting Front-End Performance”

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High Performance SVGs

I recently worked on a project that was getting a ton of traffic but users were bouncing because the page load was too long at around 10 seconds. They called me in because the majority of the images on that site were SVGs, and they were animated. I trained the team how to decrease the file size on the SVGs while preserving the appearance and functionality, finally getting the load time to under 2 seconds. The bounce rate … Read article “High Performance SVGs”

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Reducing JPG File size

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A faster FT.com

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Taking AMP for a Spin

The following is a guest post by David Attard of DART Creations. David is going to introduce us to AMP (no idea what that is? read on) as well as how you might go about converting an existing site to an AMP site. Hint: it’s for big performance gains. AMP is becoming quite a thing. WordPress is doing it. I’ve got Google telling me to do it and that Analytics supports it.Read article “Taking AMP for a Spin”

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[Talk] HTTP/2 is Here, Now Let’s Make it Easy