Perfect Lighthouse scores are possible, but they should be treated as an outcome of sound engineering rather than the goal itself. The biggest gains usually come from asset discipline, content strategy, and knowing which scripts are allowed to exist at all.
The highest-impact moves
- Use optimized images with correct intrinsic sizing.
- Keep client-side JavaScript minimal and intentional.
- Remove third-party scripts that do not justify their cost.
- Cache aggressively and serve static content whenever possible.
- Load fonts carefully and avoid layout shift.
Accessibility and SEO scores often improve when teams simplify markup, use proper heading structure, and keep interaction states explicit. Performance is not isolated from design quality. The two usually rise together when the product is built with intent.
If you can explain why every script, animation, and asset exists, you are already much closer to a 100/100 experience.