Front-End Performance Checklist 2017 (PDF, Apple Pages)

Are you using progressive booting already? What about tree-shaking and code-splitting in React and Angular? Have you set up Brotli or Zopfli compression, OCSP stapling and HPACK compression? Also, how about resource hints, client hints and CSS containment — not to mention IPv6, HTTP/2 and service workers?
Back in the day, performance was often a mere afterthought. Often deferred till the very end of the project, it would boil down to minification, concatenation, asset optimization and potentially a few fine adjustments on the server’s config file. Looking back now, things seem to have changed quite significantly.
Performance isn’t just a technical concern: It matters, and when baking it into the workflow, design decisions have to be informed by their performance implications. Performance has to be measured, monitored and refined continually, and the growing complexity of the web poses new challenges that make it hard to keep track of metrics, because metrics will vary significantly depending on the device, browser, protocol, network type and latency (CDNs, ISPs, caches, proxies, firewalls, load balancers and servers all play a role in performance).
So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Below you’ll find a (hopefully unbiased and objective) front-end performance checklist for 2017 — a brief overview of the issues you might need to consider to ensure that your response times are fast and your website smooth.The post Front-End Performance Checklist 2017 (PDF, Apple Pages) appeared first on Smashing Magazine.

Source: Smashing Magazine
Front-End Performance Checklist 2017 (PDF, Apple Pages)

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