Performance Optimization and Initial Load Times

8/10 High

SPAs often ship large JavaScript bundles causing slow initial load times. 84% of users expect sub-3-second loads, and delays reduce conversions (1-second delay = 7% conversion drop, 3+ seconds = 40-53% bounce rate). Initial page loads can be 300+ KB for content that should be 4 KB.

JavaScriptcode splittinglazy loadingservice workersCDN
Category
performance
Workaround
solid
Stage
deploy
Freshness
persistent
Scope
framework
Recurring
Yes

Sources

Collection History

Query: “What are the most common pain points with UI/UX for developers in 2025?”4/9/2026

Google research has shown that as page load time increases from 1 to 3 seconds, the probability of bounce increases by 32%. In today's mobile-first world, delays are conversions lost.

Query: “What are the most common pain points with SPA for developers in 2025?”4/9/2026

approximately 84% of users expect applications to load within three seconds. A landing page that should be 4 KB of HTML ships as a 300 KB JavaScript bundle with a loading spinner.

Created: 4/9/2026Updated: 4/9/2026