Optimi
ENFR
Contact
Guide topic

Web Performance

Explore practical guidance on Web Performance across edge performance, security, and visibility.

Topics

Related guides

Web Performance guides

RUM vs Synthetic Monitoring

RUM and synthetic monitoring answer different performance questions. Learn when to use each, how to combine them, and how to turn signals into action.

Web Performance Budgets

A practical method for setting, enforcing, and reviewing web performance budgets across page weight, Core Web Vitals, third parties, and delivery paths.

Core Web Vitals Guide

Understand LCP, INP, and CLS, their current good thresholds, how to measure them in field and lab data, and which fixes to apply first.

Speed Up a Slow Website

A practical 2026 checklist for diagnosing and speeding up a slow website, from TTFB and Core Web Vitals to images, JavaScript, caching, and CDN delivery.

Ecommerce Image Optimization

A practical ecommerce image optimization guide covering AVIF, WebP, responsive sizing, LCP, layout stability, CDN delivery, and verification.