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One of the things that Lighthouse is working on is image optimization. What we mean with optimization is serving the optimal size and image quality to your users in the fastest possible way, always, everywhere.

Last week I had an interesting discussion with a CDO who is responsible for over 20 different websites operating mostly across Europe. We talked about his priorities regarding page performance and how these were decided. He explained that they are using a Real User Monitoring tool to track each page that is accessed. The pages are clustered into Gold, Silver and Bronze based on their relevance for the business and each cluster has its own performance objectives. Every week, a report is produced that shows the top 20 pages for the gold and silver cluster that are not meeting the objective and the team will perform a quick analysis to identify the most likely root cause and propose a quick fix. If the fix is successful, the page will drop out of the top 20 report next week. If the underlying issue is complex or related to infrastructure, software components or external parties then a formal project is launched to guarantee a longer-term solution and the pages impacted by this are tagged accordingly.

I think that this is a great way to manage performance. Monitor all that matters. Focus on the things that matter most. Get things done.

Then we talked about the most frequent root-causes for pages to appear in the report and the immediate answer was image size. Content is being produced by a mix of agencies and the frequency with which content is changing is high. Time to market is always an issue and resources are thin. As a result of this people tend to focus on the home page and landing pages and not so much on anything else. As a result of this some pages will contain images that are way too big (6M is not an exception) and that have a clear negative impact on page load times. He was also honest enough to mention that they have another issue with images that is much harder to identify. Images are resized too much and as a result of this the quality is below what it should be.

We are planning a POC of our Dynalight platform to automatically resolve both issues once and for all!

Oh, by the way, the second most important root cause is too much Javascript. This needs to be downloaded and executed on the customers device and, very often, there is just too much of it. More about this later.

Interested in finding out more about how we can help you? Let us know!

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