article thumbnail

Performance Testing - Tools, Steps, and Best Practices

KeyCDN

Web performance is a broad subject, and you’ll find no shortage of performance testing tips and tutorials all over the web. Before you begin tuning your website or application, you must first figure out which metrics matter most to your users and establish some achievable benchmarks. What is Performance Testing?

article thumbnail

How To Boost Resource Loading With The New Priority Hint `fetchpriority`

Smashing Magazine

However, developers with a deep understanding of the project may want to improve performance beyond that by doing some fine-tuning under the hood. It’s common knowledge that better website performance results in more conversions, more traffic, and better user experience. Improving Largest Contentful Paint performance.

Media 69
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Trending Sources

article thumbnail

Improving JavaScript Bundle Performance With Code-Splitting

Smashing Magazine

In this article, we’re going to cover code-splitting best practices and showcase some examples using React, so we load the minimum JavaScript necessary to render a page and dynamically load sizeable non-critical bundles. Website performance is not consistent across devices. Large preview ).

Code 89
article thumbnail

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]

Smashing Magazine

Luckily, there are many great options that help you automate the collection of data and measure how your website performs over time according to these metrics. Depending on the network connection, performance budgets should adapt , but payload on slower connection is much more "expensive", regardless of how they’re used.

article thumbnail

Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]

Smashing Magazine

Luckily, there are many great options that help you automate the collection of data and measure how your website performs over time according to these metrics. From Fast By Default: Modern loading best practices by Addy Osmani (Slide 19). Test with network throttling, and emulate a high-DPI device. Image source ).