Improve Core Web Vitals
Peakhour turns Core Web Vitals work into a measurable loop: identify the pages and assets holding back LCP, CLS, and INP; optimise delivery at the edge; then compare the before-and-after evidence in user-visible metrics.
Core Web Vitals Need Measurable Fixes
Current Experience Baseline
Start with the pages visitors actually load. LCP, CLS, INP, transfer size, cache behaviour, and device mix show whether the bottleneck is a heavy image, an origin delay, an unstable slot, or client-side work.
Vitals-Moving Delivery Changes
Peakhour reduces image weight, negotiates AVIF and WebP, serves responsive variants, caches closer to users, and keeps dimensions stable so the largest content arrives earlier without shifting the page.
Before-And-After Evidence
The useful result is a repeatable record that bytes dropped, cache hits increased, LCP improved, CLS stayed stable, and interaction pressure eased on the same page type.
Where Web Vitals Drift
Core Web Vitals usually degrade through ordinary delivery decisions: a hero image shipped at desktop weight to mobile, a cache miss on a repeat asset, a missing image dimension, or JavaScript competing with the first useful interaction.
Slow Largest Contentful Paint (LCP)
Large hero media, slow origin responses, cache misses, and render-blocking resources delay the largest visible element.
High Cumulative Layout Shift (CLS)
Images without dimensions, late banners, injected content, and font swaps move content after the visitor has started reading.
Poor Interaction to Next Paint (INP)
Long-running JavaScript tasks, third-party scripts, and expensive handlers can delay the next paint after a click, tap, or key press.
How Peakhour Changes the Measurement
Peakhour applies delivery changes where they affect the measured page: cache responses near visitors, transform images into smaller responsive formats, preserve rendered dimensions, and reduce work that competes with first render and interaction.
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Edge Caching for Faster Starts
Move cacheable responses closer to users so repeat requests avoid origin latency and the browser can start rendering critical content earlier.
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Responsive Image Delivery
Convert images to AVIF or WebP, select a variant matched to the viewport, and keep width and height aligned with the rendered slot.
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Render and Interaction Pressure
Reduce render-blocking pressure from CSS and JavaScript so first render and user input are less likely to wait behind avoidable work.
Explore Our Performance Products
Advanced Caching
Use cache policy and edge delivery to reduce origin dependency on measured page paths.
Image Optimisation
Deliver responsive AVIF and WebP variants while preserving stable image dimensions.
Web Performance Platform
See how caching, image delivery, security, and measurement fit into a wider performance program.
Related evidence
Performance Evidence
Customer examples that connect Peakhour controls to production outcomes.
LegalVision
Faster Pages During Growth
LegalVision used Peakhour to keep a high-traffic online legal service fast and protected while the business scaled.
Quad Bike King
Automated Page Weight Reduction
Quad Bike King reduced page weight and improved load times through automated optimisation, format conversion, minification, and caching.
Ready to Measure and Improve Your Core Web Vitals?
Use Peakhour to connect the evidence: lower image weight, stronger cache delivery, faster LCP, stable dimensions for CLS, and responsive variants for each device.
Relevant information from our blog
Core Web Vitals Optimisation: Security-Performance Integration for Modern Applications
Comprehensive guide to Core Web Vitals optimisation with integrated security.
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Introducing a new Core Web Vital, Interaction to Next Paint (INP)
Google is introducing a new Core Web Vital to replace First Input Delay, read on to learn all about it.
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Application Performance Optimisation: Security-Integrated Performance Testing for Modern Platforms
Comprehensive guide to application performance optimisation with integrated security testing.
Read More