⚡ 133: Performant imagery for ecommerce

        16 August 2023

⚡ 133: Performant imagery for ecommerce

         ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏
        ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏

[issue 133]()

#### Editor’s note

We know very well that poor performance costs businesses real money. But as we learn in Jason’s article at the beginning of this issue, going for speed (by the means of compression) might have adverse effects through the complexities of colour perception. 

Examples like this remind us that performance can have a multitude of cascading effects. As with any discipline, we should carefully analyse the impact of our work: make it resilient and result in positive experiences, not frustration.

Karolina

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# Articles

### [New recommendations for ecommerce images](https://cloudfour.com/thinks/new-recommendations-for-ecommerce-images/)

[Jason Grigsby](https://gri.gs/)

Can image compression increase the amount of product returns? Learn about CloudFour’s research on the perception of colour—how to maintain the accuracy of product photos while being mindful about performance and environmental implications.

### [Web performance and SEO best practices and guidelines](https://build.washingtonpost.com/resources/guides/performance-and-seo)

It’s great to see callouts for web performance in design systems, especially from major publishers. Here’s the Washington Post’s take on speed.

# Case Studies

### [How we optimized performance to serve a global audience](https://www.smashingmagazine.com/2023/08/optimize-performance-serve-global-audience/)

[Liran Cohen](https://www.liranify.com/)

Find out how Bookaway approached auditing Core Web Vitals through storing measurements in BigQuery and how drastically they improved them.

# Courses, Talks & Podcasts

### [The cost of JavaScript (2023)](https://www.youtube.com/watch?v=ZKH3DLT4BKw&ab_channel=AddyOsmani)

[Addy Osmani](https://addyosmani.com/)

Addy explains how and why JavaScript is the most expensive resource your site uses today—especially on mobile and lower-end desktops. It’s one of the most worthwhile, regularly updated talks concerning JavaScript’s impact on speed.

### [Fast & !furious: debugging INP](https://www.youtube.com/watch?v=nQByr5Yyclw&ab_channel=HHWebPerformanceMeetup)

[Brian Ramirez](https://screenspan.net/)

It’s high time to pay attention to Interaction to Next Paint. In this talk, Brian walks us through what INP portrays, how to measure it and ensure it doesn’t cause user experience issues.

### [Preload v Early Hints v Fetch Priority](https://www.youtube.com/watch?v=sbjbS3P0P84&list=UU_DH6Z_K_3JRgOdDnwHLrLw&ab_channel=NYWebPerformanceMeetup)

[Joseph Freeman](https://www.linkedin.com/in/joseph-freeman-071707b/) & [Tyron Goldschmidt](https://www.linkedin.com/in/tyron-goldschmidt/)

Great summary of the variations and gotchas with different methods of managing priority of resources from the team over at Dotdash meredith.

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