React falls behind in terms of performance (and here I mean both bundle size and execution speed) by factors of 2 or more in many cases. (The bundle itself can be by 10x or more.) The latest run of the JS web frameworks benchmark places React’s performance, on average, at almost 50% slower than Solid, 25% slower than Vue, 40% slower than Svelte, and 35% slower than Preact. (Other frameworks weren’t available in this particular test.)

Woof. That’s slow. 🐢