Slides

GreenIT.fr estimated digital world's impact in 2019: 5.5% electricity consumption, 34 billion pieces of equipment and 4.1 billion internet users.

Website energy consumption based on data transmitted, data centre traffic, network, client energy use.

For a greener data center, we look at location in relation to our target audience, carbon intensity and technical capabilities for caching and compression.

A light website can easily contain the elements you expect from a typical website, and have a modest footprint at the same time.

Carbon footprint of DTHS website reduced 88.7% through optimized content (image formats, PDFs, CMS).

Beacon measures impact using data transmission & calculates CO2 using kWh/GB & CO2/kWh. Result: numbers displayed by Beacon.

Choose the optimal image format for the material, scale images to fit the visitor's device, and serve them only when needed.

System fonts are sustainable and better for dyslexic users. For custom fonts, reduce styles, optimize woff2/subsets, and use variable if needed.

Opus and AAC formats can reduce bit rate. HE-AACv2 can achieve 41% of MP3 size. AAC is well-supported by Chrome, Safari, and Firefox.

Find the optimal settings when compressing video for web. Loading times, especially on mobile, and data usage will improve a lot.

Finding the right HandBrake compression settings for your video will take time. MP4 video + AAC audio, around 800 Kbps is a reasonable starting point.

Tom Greenwood's "Sustainable Web Design" offers a practical approach to fast, eco-friendly websites that benefit both the planet & users.

Green I/O inspires tech sustainability. Guests offer knowledge to responsible tech builders creating a greener digital world. Hosted by Gaël Duez.

A thought-provoking podcast series with so many engaging episodes. Here’s a small selection: Listen at: This Is HCD: World Wide Waste — Host: Gerry…

Hannah is the Operations and Training Manager for the Green Web Foundation and founder of #LetsGreenTheWeb. She’s also co-founder of Green Tech South West.…