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1 June 2021

⚡️ 76: Improve speed with perfect font fallbacks

͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏
 
Performance Newsletter
[issue 76]()
 
#### Editor’s note
 

”One quick fix to drastically improve performance!” an article or tweet might promise. I hate to break it to you, friends, but it won’t. There’s a limited pool of strategies that might yield significant speed gains with little effort.

Great, delightful user experiences don’t *just* happen. Fast sites don’t become so without a strategy and hard work. This quest is more difficult the longer we wait to prioritise speed, but it can be equally hard to work on an older codebase as on a new project.

To achieve top speed, we need ongoing dedication and strategic investment into areas that make the most difference. It’s a marathon, not a sprint.

 
Karolina
 
 
 
 
#### What’s Performance newsletter?
 

Performance Newsletter is a fortnightly mailing by [Calibre](https://calibreapp.com), featuring web performance tools, talks and resources.

Don’t worry—we don’t spam. If you’d like to leave, [unsubscribe]() at any time. Suggest content [here](mailto:[email protected]).

 
 
 
# Articles  
 
A New Way To Reduce Font Loading Impact: CSS Font Descriptors
 
### [A New Way To Reduce Font Loading Impact: CSS Font Descriptors](https://www.smashingmagazine.com/2021/05/reduce-font-loading-impact-css-descriptors/)
 
[Barry Pollard](https://twitter.com/tunetheweb)
There are multiple strategies to reduce layout shifts caused by fonts. Learn about the new font descriptors that will help avert visual changes even more.
 
Stop building websites for iPhones
 
### [Stop building websites for iPhones](https://blog.rentpathcode.com/analyzing-performance-e7aed196df64)
 
[David Sommers](https://twitter.com/databyte)
No two web experiences are the same, and optimising for the most high-end devices will result in poor experiences for those who can’t afford them. See how RentPath analysed their mobile audience to uncover how many people don’t use iPhones.
 
 
 
# Tools  
 
AVPress
 
### [AVPress: in-browser video compressor](https://avpress.zaps.dev/)
 
[Addy Osmani](https://twitter.com/addyosmani)
Videos can enrich a browsing experience but can be tricky to deliver fast without compromising quality. Now, you can compress and optimise your videos directly in Firefox and Chrome!
 
 
 
# Browsers  
 
Sparkplug — a non-optimizing JavaScript compiler
 
### [Sparkplug: a non-optimizing JavaScript compiler](https://v8.dev/blog/sparkplug)
 
[Leszek Swirski](https://twitter.com/leszekswirski)
Chrome’s V8 just got a new non-optimising JavaScript compiler that improves web performance real-world benchmarks by 5–15%.
 
 
 
# Talks & Podcasts  
 
Preparing for page experience ranking
 
### [Preparing for page experience ranking](https://www.youtube.com/watch?v=h00kn5J-F2Q&t=430shttps://www.youtube.com/watch?v=h00kn5J-F2Q)
 
[Jeffrey Jose](https://twitter.com/jeffjose) & [Naina Raisinghani](https://twitter.com/nainar92)
Your sites are evaluated for Google Search ranking based on many factors, including page experience. Now, Google will determine the page experience not only on mobile but also on desktop.
 
What's new in Web Vitals
 
### [What’s new in Web Vitals](https://www.youtube.com/watch?v=XxvHY4wC8Co)
 
[Annie Sullivan](https://twitter.com/anniesullie) & [Elizabeth Sweeny](https://twitter.com/egsweeny)
There have been a lot of changes to Core Web Vitals metric calculation since their inception. Learn what’s new and how to measure Core Web Vitals effectively.
 
 
Calibre
 
This email is brought to you by the team at [Calibre](https://calibreapp.com). Our performance monitoring platform helps you deliver stellar user experiences to everyone.
 
 

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