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Choosing the right image format is the first and most important step when it comes to image performance. We want our websites to load fast, but we also want our images to look good. Balancing these two concerns is the core of image performance. Image formats are file types for digital graphics that have evolved over time to make use of new software and hardware technologies and faster networks. Th
This report investigates how 1000 of the most popular Chrome extensions impact browser performance and end-user experience. Key findings of the 2021 report: Popular extensions like Honey, Evernote Web Clipper, and Avira Browser Safety can have a significant negative impact on website speed On ad-heavy websites, ad blockers and privacy tools can greatly improve performance As the performance impact
We can see that each page loads over 15 MB of JavaScript code. A look at the performance timeline in Chrome DevTools confirms that running this code is the primary cause of the poor page performance. This article will take a closer look at the page load process of the Google Cloud Functions page, and examine how it could be sped up. You can use these strategies to investigate and improve the perfo
A story on Hacker News recently argued that webpage speeds haven't improved, even as internet speeds have gone up. This article explains why that conclusion can't be drawn from the original data. We'll also look at how devices and the web have changed over the past 10 years, and what those changes have meant for web performance. Interpreting the HTTP Archive data How have mobile networks and devic
Extensions often need to inject code into every page, rather than only targeting certain domains. Password managers need to check if there's a login form. Spell checkers need to look for text fields. However, for performance it would be much better if the code that checks the relevant conditions was separated from the primary functionality of the extension. Then most of the code would only be load
This post describes some techniques to make front-end apps load faster and provide a good user experience. We'll look at the overall architecture of the front-end. How can you load essential resources first, and maximize the probability that the resources are already in the cache? I won't say much how the backend should deliver resources, whether your page even needs to be a client-side app, or ho
I tested 26 Chrome extensions to measure their impact on CPU consumption, page download size, and user experience. Key findings: Grammarly and Honey are super slow!The performance impact of individual extensions is usually outweighed by the site being loaded, but they increase power consumption and having many extensions installed adds upExtension developers can score easy wins by following best p
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