Find the bottleneck.
Engineer the improvement.

We inspect network waterfalls, request initiators, dependency chains, cache behaviour and render-blocking resources. Browser performance traces show where script evaluation, long tasks, layout and painting compete for the main thread.

We compare representative templates and visitor journeys, including mobile and logged-in experiences. Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift help describe the experience; server timing, request volume and execution traces help explain its causes. Field data, where available, adds the experience of real visitors to controlled lab measurements.

A form, gallery, directory search or member dashboard can bring its own CSS, JavaScript and dependencies. Those assets should be evaluated against the pages and states that use them. We map requirements by template, page, post type, block, shortcode, ACF layout and relevant user state.

We use WordPress enqueue hooks to load assets conditionally, dequeue resources that are not needed on a request, and deregister or replace registrations where appropriate. Dependencies, inline configuration, translations and execution order are checked together. A resource that looks unused on the homepage may be essential to a form, consent-controlled feature or account screen elsewhere.

Bundle analysis exposes duplicated libraries, oversized dependencies and code that reaches every page despite serving a single feature. We examine webpack entry points, dynamic imports, code splitting and tree shaking, with explicit attention to side effects and shared dependencies.

We review event handlers, DOM work and long tasks as well as download size. Deferred or asynchronous loading is chosen around actual dependencies; optional features can initialise when needed. Cache-friendly file versions help returning visitors reuse unchanged assets. Each change is checked against the interactions it could affect.

We examine the critical rendering path: stylesheet dependencies, unused rules, font discovery, image delivery and the element that becomes the page’s largest visible content. CSS coverage helps identify candidates for removal, but dynamic classes and interaction states are verified before anything is discarded.

Responsive image sizes, appropriate formats, explicit dimensions and selective lazy loading reduce unnecessary work and layout shifts. Important above-the-fold imagery needs timely discovery. Font weights, subsets, fallback metrics and carefully chosen preload hints are considered together. We simplify layout and animation work where it makes the interface more responsive.

A quick front end starts with a server that can respond efficiently. We profile expensive hooks, repeated queries, template loops, metadata access, remote API calls and plugin behaviour to establish where time is being spent.

We investigate query structure, unnecessary data retrieval, autoloaded options, scheduled tasks and cache usage. Targeted changes may involve restructuring a query, reducing repeated work, bounding a remote request or introducing appropriate transient or object caching. Database index changes follow evidence and testing. Search, membership and other dynamic features need particular attention because their workload differs from a cached brochure page.

Page caching, persistent object caching, browser caching and CDN delivery solve different problems. We assess where each layer helps, how content becomes stale and what should cause invalidation. Compression, response headers and origin response times are part of that review.

Logged-in screens, personal data, forms, nonces and session-dependent content need explicit cache rules. We test cold and warm paths, cache exclusions and representative dynamic requests. A cache hit is useful only when it returns the correct content to the correct visitor.

Analytics, chat, maps, video embeds and external widgets can add network requests and main-thread work outside the theme’s own bundle. We map their purpose, loading behaviour and cost, then consider lighter integrations, deferred initialisation or an interaction-triggered facade where it fits the experience.

Changes respect consent requirements and are tested with the people responsible for measurement. We check event delivery, form tracking and feature behaviour so a lighter page still does the job the business needs.

We repeat measurements under comparable conditions and check the journeys affected by the work: navigation, search, forms, account access and checkout where relevant. We distinguish a genuine improvement from a warm cache, a quiet server or a changed test device.

The handover records what changed, why it changed and how to maintain it. Useful performance budgets can track asset weight, request growth or key page behaviours as the site evolves. The goal is a faster, more dependable experience that holds up through content changes and future releases.