Developing the Largest Contentful Paint Metric

- Annie Sullivan tl;dr: A new performance metric has been established by the Chrome team measuring when the main contents of a page is displayed. This runs through the framework used to build this metric and the objective. 

featured in #166

Moving Towards A Faster Web

- Addy Osmani Ben Greenstein Bryan McQuade tl;dr: The Chrome team are in development of "badging", a method of identifying sites that are built in "a way that makes them slow" by looking at historical load latencies. In the future, such information may be communicated to users. 

featured in #161

Shared Cache Is Going Away

- Jeff Kaufman tl;dr: A single cache is a security risk, browsers are responding by partitioning the cache. As a result, developers "won't get performance benefits from using a canonical URL over hosting on their own site."

featured in #160

Techniques To Make A Web App Load Fast, Even On A Feature Phone

- Surma tl;dr: Always measure before optimizing performance. Effective optimization methods are (1) deliver as many assets over one connection (2) preload assets for the first render / interactivity (3) prerender app to improve perceived loading performance (4) aggressive code splitting to reduce the amount of code needed for interactivity.

featured in #155

Fast Software, the Best Software

- Craig Mod tl;dr: When you experience software, apps that perform quickly build trust. When applications are bloated, take time to load or function a command, we tend to distrust them and we lose our "flow". Aim to build fast, light, software. The author cycles through many examples of what he likes and doesn't.

featured in #149

Modern Script Loading

- Jason Miller tl;dr: Often scripts are configured to over-fetch, decreasing performance. Here are several options to optimize script loading time based on use case and architecture.

featured in #148

Speed At Scale - What's New In Web Performance?

- Katie Hempenius Addy Osmani tl;dr: (1) Lighthouse supports Performance Budgeting (2) Native image and iframe lazy-loading comes to the web (3) Google Fonts now supports font-display as a query parameter.

featured in #143

A Conspiracy To Kill IE6

- Chris Zacharias tl;dr: Just after Google's acquisition of YouTube, a YouTube engineer recounts his team's stealth effort to push a fifth of the site's users off of IE6 without informing the organization 🤫.

featured in #139

Improving Third-party Web Performance At The Telegraph

- Gareth Clubb tl;dr: Biggest challenge was organizational - meeting demands from various stakeholders. This was tackled by creating a cross-departmental working group. Articles outlines how deferring JS had significant impact on performance and tools used to monitor it. Click the link in this tweet if paywalled.

featured in #139

Native Image Lazy-loading For The Web!

- Addy Osmani tl;dr: New loading attribute for images and iframes helps content load quicker, reduces network data usage and reduces memory usage. It should be shipped as part of Chrome 75.

featured in #136