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Checklist | 14 min read
Ultimate Web Performance Optimization Checklist 2026
A practical checklist to improve loading speed, interaction quality, and stability across devices.
Published on 25/3/2026
Asset and Delivery Optimization
Compress images, serve modern formats, and cache static assets aggressively using a CDN.
Ship only required JavaScript and split bundles to avoid loading unnecessary code on first view.
Runtime Optimization
Avoid heavy main-thread work, defer non-critical scripts, and reduce layout shifts with fixed dimensions.
Track regressions in CI and production dashboards so performance quality stays stable as features grow.
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