February 10, 2020
Release Notes is a monthly summary of new features and product improvements.
Most performance and user experience issues are discovered when it’s already too late—long after they have already impacted your customers. Pull Request Reviews allows you to identify speed bottlenecks before they reach production, directly in your Pull Requests.
If you’re using GitHub and one of the following deployment methods: Vercel (previously ZEIT), Heroku, Netlify or GitHub deployment statuses, you will be able to enable Pull Request Reviews and receive detailed performance reports on your work-in-progress. Read the announcement or learn how to get started.
You can enable the Netlify integration under Site → Settings → Integrations → Netlify → Add Webhook.
New major release of the CLI brings more functionality, customizability and better error handling. You can now:
When Lighthouse reports potential savings, you can now inspect their details to find out where exactly to look and how much time or bandwidth is there to be saved.
Max Potential First Input Delay is calculated based on First Input Delay (FID). It portrays the maximum time it takes the browser to respond to a user action, such as clicking a button or trying to type something into a form. Max Potential FID can be used alongside Time to Interactive to quantify when your sites and apps can be successfully interacted with.
You can add Max Potential First Input Delay to the Pulse page through customising the Metric History view and set budgets against it.
We updated our Performance Report calculations to give a better representation of the median scores across Test Profiles and Pages. Previously, a missing data point could skew the numbers significantly. Now, we calculate the median for each Page or Test Profile and generate an overall median based on granular results.
If you noticed slightly different results from week to week, this would be why.
Be notified about new product features, releases and performance research.