Slow readings in those metrics quantify poor user experiences and can result in SEO ranking penalties. In short, most of them! Pages with large amounts of script can delay Largest Contentful Paint, cause Cumulative Layout Shifts, increase First Input Delay, Total Blocking Time and Time to Interactive. Which performance metrics are affected by bundle size? The effects of a large bundle can be partially mitigated by caching, compressing and minifying script resources, though reducing the size of a bundle is the only way to guarantee a fast page.īy keeping pages as light as possible, you’re ensuring that every visitor has the best chance of a great experience.
Of course, your users don’t have to be using old devices or slow networks to have a sub-par experience. If your users happen to be on a slow, spotty network, a device with a low battery or even just an underpowered Android, large bundle size will likely cause delays during load, render, user interaction or even page scroll. During parse and compile: big bundles take longer to be turned into machine code, which delays JS initialisation.During page load: big bundles take longer to download.Large amounts of JavaScript negatively affect site speed in two distinct phases: Deliver ES6 modules to up-to-date browsers.Lazy load third party resources with facades.Prefer server-side rendering for primary content.
BUNDLE FILES UNCOMPRESSED CODE
Tools and automations to keep your code fast.Which performance metrics are affected by bundle size?.How does bundle size affect performance?.
0 kommentar(er)
