Writing

My most recent writing on sustainable web development, performance tips for websites and apps, as well as a few other musings.

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A first look at Carbon Control by WebPageTest

In early May, 2023, the WebPageTest (WPT) team shipped a new feature to the tool. They called it Carbon Control, and boy oh boy was I excited to see it finally land.

Silhouette of Boy Running in Body of Water during Sunset

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Chasing efficiency rather than green energy

A recent post by Adrian Cockcroft raised some sensible counter arguments for why chasing green energy usage for cloud compute might not always be the most climate friendly solution.

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Eleventy Plugin: Green Links

A small Eleventy plugin I built at the end of February 2023.

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Release guide: CO2.js v0.12

CO2.js v0.12.0 introduces the ability to customise the figures used in carbon emissions calculations when using the Sustainable Web Design model, paving the way for more case specific carbon emissions estimates.

Light switch set to 'OFF' on a white wall.

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Making this website carbon aware

Building carbon awareness into products is an important strategy to in the challenge to develop a more sustainable future. In this post, I cover how I used Cloudflare Workers and real-time data to make this website carbon aware.

Yellow analogue weight scale display with the needle position just before 500 kg.

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Improving the accuracy of website carbon emissions estimates

Existing models for website carbon emissions are good for reaching a ballpark figure of website CO2 emissions. This post goes into some ways to generate more specific, accurate emissions estimates.