Lorenzo Pieri
Sustainable me. A tale of good design.
#1about 7 minutes
The surprising environmental impact of the internet
The internet's CO2 emissions are comparable to the aviation industry, driven by massive growth in traffic and data center usage.
#2about 4 minutes
Analyzing the carbon footprint of different websites
A comparison of a personal blog, Twitter, and an activist site reveals how page size and assets impact CO2 emissions.
#3about 2 minutes
Understanding how dark mode affects energy consumption
Dark themes only save energy on OLED screens where black pixels are turned off, unlike LCD screens which use a constant backlight.
#4about 7 minutes
Applying good design principles for sustainability
Use tools like Karma Metrix to measure your footprint and apply Dieter Rams' principles of good design to create simpler, more efficient products.
#5about 2 minutes
Writing efficient and sustainable CSS
Reduce your site's carbon footprint by minifying CSS, removing unused styles, and understanding browser rendering phases like layout, paint, and composite.
#6about 4 minutes
Reducing JavaScript's impact with smaller bundles
Small reductions in JavaScript bundle size, achieved through tree shaking and careful library selection, have a massive compounding effect on CO2 emissions at scale.
#7about 3 minutes
Optimizing images and fonts for sustainability
Improve performance and reduce energy use by serving responsive images in modern formats like WebP and loading only the necessary font weights with variable fonts.
#8about 2 minutes
Leveraging caching and edge computing for efficiency
Reduce latency and power consumption by using CDNs and edge computing to serve content from servers physically closer to the user.
#9about 5 minutes
Sustainable habits for developers beyond coding
Embrace asynchronous communication, choose green cloud hosting, and build accessible websites to create a broader positive environmental impact.
#10about 4 minutes
Resources and a call to action for sustainable engineering
Explore resources like envirotechnical.eu and make a personal commitment to regularly check and improve the carbon footprint of your projects.
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Matching moments
00:15 MIN
Introducing sustainable UX and the problem of digital waste
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27:12 MIN
How web performance contributes to sustainability
Sleek, Swift, and Sustainable: Optimizations every web developer should consider
06:55 MIN
How web performance directly impacts web sustainability
Reducing the carbon footprint of your website
00:15 MIN
The growing impact of websites on the climate
How Your Bundle Size Affects The Climate
31:13 MIN
The performance benefits of building green software
It's not easy being green
23:07 MIN
Measuring a website's carbon footprint with online tools
How Your Bundle Size Affects The Climate
09:21 MIN
How to measure a website's carbon emissions
Reducing the carbon footprint of your website
00:31 MIN
Overcoming the challenges of sustainable web design
Introducing the W3C Web Sustainability Guidelines
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From learning to earning
Jobs that call for the skills explored in this talk.




Frontend Web Engineer: Design System
Just Eat Takeaway.com
Bristol, United Kingdom
Remote
HTML
Vue.js
Next.js
TypeScript



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