Best of 2025

The blog posts Hacker News loved most in 2025. 6,219 posts.

Any topic
932

Don't animate height

Our app was mysteriously using 60% CPU and 25% GPU on my M2 MacBook. It turned out this was due to a tiny CSS animation! In this post, I show how to find expensive animations, why some are so expensive, and how to make many animations much cheaper. Along the way, we'll learn how the browser renders CSS animations and…

950

An interactive guide to SVG paths

SVG gives us many different primitives to work with, but by far the most powerful is the element. Unfortunately, it’s also the most inscrutable, with its compact Regex-style syntax. In this tutorial, we’ll demystify this infamous element and see some of the cool things we can do with it!