Find and Fix Your Heaviest Images with Page Weight

Page Weight Scale

Page load speed continues to be a primary concern for websites. With increasing numbers of customers accessing sites on mobile connections, and markets expanding into areas with uneven broadband coverage, load times have a big impact on conversion.

But “speed” can be a nebulous measure. We recommend using page weight, or the combined file sizes of every element on a page, as a proxy. Unlike speed, it’s objective, measurable and actionable. Slow because of a heavy page? Find the heaviest elements and try to shrink them.

Images are often up to 70 percent of a page by weight. That means image optimization is usually an easy win. Yet it’s not always easy to know where to start. Last year, we launched Page Weight, a tool designed to guide you to your worst-performing images quickly and provide straightforward optimization suggestions. Today, based on feedback from users, we’re launching an improved version that makes picking that low-hanging fruit even easier.

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How We Are Improving Performance

When I set out to build imgix 6 years ago, I was very aware that we were asking our customers to trust us with something fundamental to their success: the visual performance of their product. To earn that trust, we need to provide the best value, performance, and reliability.

Sadly, we have failed in that commitment over the last few weeks. Our performance has not been at the level our customers demand of us. Worse, with the entire team working around the clock to fix these problems, we have been unable to communicate what was happening. This is unacceptable to me.

I want to personally apologize to any customer who felt that imgix did not value their business during this time. We built imgix to enable our customers to do great things, and that partnership must always be built on trust and open communication.

In that spirit, I want to speak bluntly about the issues we have had, explain why they happened, and let you know what we are doing to make things right. A number of factors have contributed to imgix's recent performance problems. We have solved some of them, and are working hard on the remaining issues and taking further steps to keep situations like this from impacting our customers in the future.

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How HTTP/2 Can Speed Up Your Site

http 2

We got a great response when imgix launched support for HTTP/2 in January. As we’ve talked about it with our customers, we’ve noticed that people are happy to have HTTP/2, but not everyone fully understands how it can improve their site. So here’s a short, jargon-free explanation about what HTTP/2 does and how you can benefit from it.

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State of the URL API

State of the URL API

When you’re looking for information about an imgix feature, the API documentation is your friend—every parameter in the service is listed with examples, ranges, and default values. We also have in-depth tutorials for more complex multi-parameter use cases.

This is great for humans who need to know the ins and outs of imgix, but what about machines? If you’re building tools, libraries, or URL generators based on our Image URL API, having a single, machine-readable source of truth about the capabilities of all available parameters is crucial. Fortunately, it’s available on GitHub in JSON format and as Bower and NPM packages.

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HTTP/2 Support Now Live!

HTTP/2 Support Now Live

HTTP/2 is a big leap forward for websites and web apps. It improves performance by making resource requests more efficient, which means that your pages should load much faster—with a particular boost for image-heavy sites.

imgix is always working to squeeze the most performance out of your images, so we’re pleased to announce that we now offer HTTP/2 free of charge to all accounts.

What You Should Know

  • HTTP/2 is on automatically for all accounts, and will be the default connection method over secure (HTTPS) connections. You don’t need to change your account or Sources to use it and there is no additional cost.
  • HTTP/2 fixes many of the shortcomings found in HTTP/1.1, so you no longer need to use workarounds such as Source sharding or image sprites to get maximum performance. If you’re using these techniques, you should consider discontinuing them. They can sometimes hurt performance under HTTP/2 due to differences in the way it requests resources like images.


Set Your Image Optimization on Auto-Pilot with Smart Defaults

Default Parameters

Enhancing the speed and quality of your images isn't just an upgrade—it's a transformative step for any website. Whether you're showcasing products or sharing content, this optimization ensures that your audience experiences your offerings at lightning speed, with crystal-clear quality. The result? A smoother, more engaging user journey that not only retains attention but also boosts conversions and engagement.

imgix's auto parameters are designed to offer you this competitive edge. Check out our recommended best practices for default settings that simplify the core of image optimization to a matter of clicks, without the need for any coding.

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