Why your site is slow (and it's probably not the framework)
Nine out of ten "slow site" audits we run are fixed without changing a single line of framework code.
Clients ask us to migrate to a faster framework. We ask to run a Lighthouse first. The findings are usually the same.
What's actually slow
Images, in 80% of cases. A 4 MB hero JPEG that nothing optimizes. PNG screenshots used where WebP would cost half the bytes. Lazy-loading missing on long pages.
Third-party scripts, in another 15%. Five tracking pixels, two chat widgets, an A/B testing tool no one remembers installing. Each one is small. Together they're a budget killer.
The remaining few percent are real architecture problems - uncached database queries, oversized JS bundles, blocking fonts. Those need engineering.
What to fix first
Before changing a framework: compress every image, add explicit width/height, audit the third-party tags, set a font-display strategy. Most teams find half their problem in those four passes.
Migrating to Next.js when your hero image is 4 MB doesn't make the hero image faster. It just adds a deploy pipeline.