#### PerformanceNewsletter
|
#### Issue 34
|
|
#### Editor’s Note
In our day-to-day, we often find tools that will save us time or offer services necessary to reach our business goals. Just drop in a code snippet and forget.
However, using third party tooling comes with great responsibility. **Anything we add that we don’t govern is potentially a performance, accessibility, privacy and security liability. **
Time to start acting accordingly.
— Karolina
|
|
#### talk
## Grasp the link between speed and accessibility
In his talk, [Henri Helvetica](https://twitter.com/henrihelvetica) describes how web performance directly affects accessibility. While those subjects are often discussed separately, how fast and responsive your products are *will determine* how accessible they are.
[]()[The Tipping Point: How Performance Decisions Make Accessibility Differences →](https://www.youtube.com/watch?v=_rEKBm0nuyw&feature=youtu.be)
#### article
## Audit how performance impacts conversions
Often, it’s hard to convince team leads, managers or business owners to prioritise performance. An effective way of doing so is presenting data that backs the hypothesis of bad performance, hurting conversions and engagement. Here, [Sia Karamalegos](https://twitter.com/TheGreenGreek) explains how to do so.
[]()[Show me the money: Justifying performance improvements using Google Analytics →](https://dev.to/thegreengreek/show-me-the-money-justifying-performance-improvements-using-google-analytics-3231)
#### article
## Learn how to test the performance of SPAs
Often, authenticating into apps, navigating between screens and more complex actions can be challenging to measure. In his in-depth article, [Nicolas Goutay](https://twitter.com/phacks) explains how to set up WebPageTest for Single Page App testing (psst, [Calibre can authenticate into your apps](https://calibreapp.com/docs/calibre/authentication) without writing *any* code).
[]()[Recipes for Performance Testing Single Page Applications in WebPageTest →](https://css-tricks.com/recipes-for-performance-testing-single-page-applications-in-webpagetest/)
#### new in calibre
## What Calibre released last month
📚**Release Notes: September**
Here’s our monthly roundup of what was released in September: Third Party tracking, blocking Third Party tools through Test Profiles, enhanced test verification and more.
🆕**Trace performance of Third Party script: **57% of script execution time across the top 4 million sites is external JavaScript. External tools we use have a profound impact on our products. Third Party tracking helps uncover which tools bring you the most trouble.
[]()
|
|
#### podcast
## Understand how to approach performance
In this episode of Real Talk JavaScript, [Katie Hempenius](https://twitter.com/katiehempenius) talks about the approach to performance looks like at Google and shares numerous performance tips, tricks and strategies.
[]()[real talk javascript with katie hempenius →](https://realtalkjavascript.simplecast.fm/fbdc36f9)
#### podcast
## Build and scale a performance culture
In the second episode of Chasing Waterfalls, [Reefath Rajali](https://twitter.com/Rajali) explains her journey in establishing and advocating for performance culture at PayPal. I especially liked the idea of finding "performance champions" in other teams to let the culture grow organically.
[]()[chasing waterfalls with Reefath Rajali →](https://chasingwaterfalls.io/episodes/episode-two-with-reefath-rajali/)
|
|
#### Spread the word about perf.email
We’d love to see more people reading
[perf.email](https://perf.email/); if you’d like to help—forward this email to a friend, tweet, or shout from a rooftop.
It goes a long way. ✌🏻
|
|
