Hey everyone!
I'm diving deep into frontend performance optimization for my latest project and I'm looking for best practices, essential tools, and any common pitfalls to avoid. Specifically, I'm interested in:
Any insights or shared experiences would be greatly appreciated!
Great topic, @CodingNinja! Performance is key.
For image optimization, I highly recommend using modern formats like WebP where supported. Tools likeimagemin or online converters can help. For lazy loading, the nativeloading="lazy" attribute is a game-changer. You can also use libraries like Lozad.js for broader compatibility.
Regarding JS bundling and code splitting, Webpack and Rollup are industry standards. Learning to configure them for optimal chunks can significantly reduce initial load times.
"The first step in optimizing is to measure." - Unknown
Don't forget about CSS!
Extracting critical CSS and inlining it in the<head> is crucial for perceived performance. Tools likePenthouse can help with this. Minifying your CSS withcssnano is also a must.
For caching, ensure you're setting appropriateCache-Control headers for your static assets. This helps browsers serve cached resources on subsequent visits.
Here's a quick example of a critical CSS snippet:
.hero {
background-image: url('/images/hero.webp');
background-size: cover;
height: 400px;
}
.btn-primary {
background-color: #007bff;
color: white;
padding: 10px 20px;
border-radius: 5px;
}