Website Speed Audit and Performance Assessment
Identify measurable performance bottlenecks before implementing technical changes.
A useful speed optimization project should begin with a performance baseline.
We review the relevant website pages, important user journeys, technical environment, and available measurement.
Potential activities include:
- Website platform assessment
- Representative page selection
- Desktop performance testing
- Mobile performance testing
- Core Web Vitals review
- PageSpeed Insights analysis
- Lighthouse diagnostics
- Browser network request analysis
- Resource loading assessment
- Server response observations
- Third-party script assessment
- Initial optimization recommendations
The audit identifies likely causes and distinguishes verified performance issues from assumptions that require additional investigation.
Typical deliverables: Performance baseline, technical findings, prioritized recommendations, and proposed optimization scope.
Core Web Vitals Optimization
Improve loading, responsiveness, and visual stability using relevant Core Web Vitals measurements.
Core Web Vitals provide a framework for understanding important aspects of real-world website experience. The three current metrics are Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift.
Potential activities include:
- LCP assessment
- INP assessment
- CLS assessment
- Mobile and desktop comparisons
- Page template analysis
- Real-user performance data review
- Performance bottleneck identification
- Optimization recommendations
- Comparable retesting
- Ongoing measurement requirements
Core Web Vitals should be interpreted with attention to the source of the data and the actual customer experience.
A website may have insufficient real-user data for some pages, requiring additional laboratory testing and careful reporting.
Largest Contentful Paint Optimization
Help important visible content appear sooner by addressing relevant loading delays.
Largest Contentful Paint measures when the largest relevant visible content element is rendered during page loading. The affected element might be a hero image, large heading, or other substantial content.
Potential activities include:
- LCP element identification
- Initial HTML response assessment
- Server response analysis
- Critical image delivery review
- Resource discovery optimization
- Relevant preload considerations
- Critical CSS assessment
- Image priority configuration
- Render-blocking resource review
- LCP verification
The main visible image should not automatically be lazy-loaded.
For appropriate pages, earlier resource discovery and suitable loading priority can help improve the LCP experience.
Interaction to Next Paint Optimization
Make website interactions more responsive by reducing unnecessary processing delays.
Interaction to Next Paint measures responsiveness to qualifying user interactions. Visitors may notice poor responsiveness when clicking menus, opening filters, entering information, or performing other actions.
Potential activities include:
- Interaction performance assessment
- Slow event handler investigation
- JavaScript execution review
- Long-running task analysis
- Main-thread workload assessment
- Expensive rendering review
- Third-party script impact analysis
- Event-processing optimization
- Interaction-related regression tests
- INP measurement review
The correct approach depends on the affected interaction and its technical cause.
Simply downloading smaller files may not resolve interaction delays caused by excessive JavaScript execution.
Cumulative Layout Shift Optimization
Reduce unexpected movement of visible page elements.
A website may shift while loading because images, banners, fonts, advertisements, or embedded content appear without reserved space. This can make a page difficult to read or cause users to click an unintended element.
Potential activities include:
- Layout shift diagnostics
- Image dimension review
- Media container sizing
- Banner and embed placeholder assessment
- Font loading behavior
- Dynamic content placement
- Responsive layout review
- Third-party widget considerations
- Browser testing
- CLS verification
The objective is to establish predictable layouts while preserving legitimate dynamic functionality.
Website Image Optimization
Reduce unnecessary image transfer costs while maintaining suitable visual quality.
Images may account for a significant portion of a website's transferred data. Large or incorrectly sized images can create avoidable loading delays.
Potential activities include:
- Image size assessment
- Image compression recommendations
- WebP and AVIF suitability review
- Responsive image delivery
- Appropriate image dimensions
- Image quality evaluation
- Hero image optimization
- Thumbnail and product image review
- Lazy loading for appropriate offscreen images
- Image loading priority assessment
- Content management image guidance
- Post-change visual testing
Compression should preserve acceptable quality for the intended use.
Different image types may require different formats or loading strategies.
JavaScript Performance Optimization
Reduce unnecessary JavaScript work affecting page loading and interactions.
Modern websites often use JavaScript for navigation, forms, animations, analytics, search, filters, and interactive components. Excessive or poorly timed JavaScript can affect responsiveness.
Potential activities include:
- JavaScript bundle analysis
- Unused code identification
- Script loading review
- Deferred script suitability
- Asynchronous loading considerations
- Code splitting opportunities
- Main-thread task assessment
- Event handler analysis
- Third-party dependency review
- Dynamic import feasibility
- Runtime error checks
- Functionality regression testing
Script changes should preserve essential website functions.
Advertising conversion tracking, form submissions, payment integrations, and other critical features should not be disabled without explicit approval.
CSS and Render-Blocking Resource Optimization
Improve how the browser receives and applies the styles needed to display website content.
Stylesheets can affect how soon important page content becomes visible. A website may load large amounts of CSS that are not needed for the current page or initial viewport.
Potential activities include:
- CSS resource assessment
- Unused CSS review
- Critical stylesheet considerations
- Stylesheet loading order
- CSS minification where suitable
- Component stylesheet analysis
- Responsive CSS review
- Render-blocking resource identification
- Layout recalculation observations
- Post-change visual testing
CSS optimization must preserve the approved design across supported devices and browsers.
Aggressive removal of styles can introduce visual defects and should be tested carefully.
Website Font Loading Optimization
Improve text rendering through suitable font choices and loading behavior.
Web fonts contribute to a website's visual identity, but their implementation can affect performance and visual stability.
Potential activities include:
- Font file inventory
- Typeface weight review
- Unnecessary font variant identification
- Font format assessment
- Font loading strategy
- Suitable font preloading
- Fallback font configuration
- Font display behavior
- Text rendering observations
- Layout shift testing
Font optimization should maintain brand consistency and readability.
Commercial font licences and third-party font services may introduce separate requirements.
Website Caching Optimization
Reduce unnecessary processing and repeated transfers through appropriate caching.
Caching can help website infrastructure deliver suitable content more efficiently. The correct approach depends on whether the content is static, personalized, transaction-related, or frequently updated.
Potential activities include:
- Browser caching review
- Cache-Control header assessment
- Static asset caching
- Page caching suitability
- Application cache evaluation
- Object caching requirements
- Cache expiration considerations
- Cache invalidation planning
- Dynamic content exclusions
- Cache compatibility testing
- Performance verification
Caching must be configured carefully for authenticated sessions, shopping carts, checkout pages, customer accounts, and other personalized content.
Improper caching can display stale information or create serious functional and confidentiality concerns.
Content Delivery Network Optimization
Evaluate suitable content delivery options for visitors across different geographic markets.
A content delivery network can help deliver eligible files from infrastructure closer to users. CDN effectiveness depends on the site's architecture, audience distribution, cache rules, and external dependencies.
Potential activities include:
- CDN suitability assessment
- Target audience region analysis
- Static asset delivery review
- CDN cache configuration
- Origin server considerations
- Asset caching rules
- Image delivery options
- Cache purge procedures
- CDN error handling
- Multi-region performance testing
- Hosting provider coordination
CDN services may involve separate subscriptions and provider charges.
A CDN does not automatically eliminate slow backend processing or guarantee identical performance worldwide.
Server Response Time Optimization
Investigate backend and infrastructure delays affecting initial page delivery.
Before a browser can display content, the server may need to process a request, query a database, render templates, or communicate with other services. Slow responses can delay the entire loading process.
Potential activities include:
- Time to First Byte assessment
- Hosting resource observations
- Application request processing review
- Server configuration assessment
- Backend error analysis
- Web server caching considerations
- PHP runtime compatibility
- Worker and concurrency observations
- Third-party dependency timing
- Infrastructure improvement recommendations
Server configuration and hosting upgrades require appropriate access and provider support.
A more expensive hosting plan is not automatically the best solution if the primary bottleneck is application code.
Database Performance Optimization
Evaluate database operations that may delay website responses.
Dynamic websites often query databases to retrieve products, content, customer records, permissions, and other information. Inefficient queries or inappropriate indexing can affect performance.
Potential activities include:
- Slow query identification
- Database request profiling
- Query pattern assessment
- Indexing recommendations
- Unnecessary query review
- N+1 query investigation
- Database connection considerations
- Application data access optimization
- Query caching suitability
- Database workload observations
- Regression testing
Database changes must account for data integrity, application behavior, and the operating environment.
Large-scale database restructuring or architecture changes may require a separate development project.
WordPress Speed Optimization
Improve performance in supported WordPress installations through appropriate platform-specific changes.
WordPress performance can depend on themes, plugins, hosting, database behavior, media assets, and caching. The right solution should follow a review of the actual site.
Potential activities include:
- WordPress performance assessment
- Theme resource review
- Plugin performance analysis
- Page cache evaluation
- Object cache suitability
- Database query observations
- Image optimization
- Font and script review
- WordPress update compatibility
- Hosting and PHP considerations
- Relevant page testing
- Performance reporting
A performance plugin is not guaranteed to fix every slow WordPress website.
Several optimization plugins using overlapping features may introduce conflicts or incorrect caching behavior.
Explore WordPress Development
WooCommerce and E-commerce Speed Optimization
Improve selected store experiences without compromising product, cart, checkout, and order functionality.
E-commerce websites present additional performance challenges because some content must remain dynamic and customer-specific. Product catalogs, filtering, pricing, inventory, checkout, and third-party integrations can affect performance.
Potential activities include:
- Product page speed assessment
- Product image optimization
- Category and filtering performance
- Search functionality review
- WooCommerce plugin analysis
- Cart and checkout performance
- Customer session considerations
- Cache exclusions
- Payment integration performance observations
- Database query analysis
- Mobile store performance testing
- Critical transaction regression checks
Optimization should not risk serving another customer's cart, session, or account information through incorrect caching.
Explore E-commerce Development
PHP and Laravel Website Performance Optimization
Investigate frontend and backend bottlenecks in supported custom PHP and Laravel applications.
Custom web applications may depend on server-rendered templates, database queries, middleware, APIs, background jobs, and deployment configuration.
Potential activities include:
- PHP application performance assessment
- Laravel request profiling
- Route and controller performance
- Middleware overhead observations
- Eloquent query review
- N+1 query assessment
- Database indexing considerations
- Cache strategy evaluation
- Queue and background processing opportunities
- Configuration caching considerations
- Template rendering review
- Server and PHP runtime compatibility
- API response performance
- Deployment and regression testing
Changes should follow framework-version requirements and available technical evidence.
Application restructuring, major framework upgrades, or infrastructure redesign may be separately scoped.
Explore Web Application Development
Third-Party Script and Integration Optimization
Assess the performance impact of external tools connected to your website.
Business websites often use analytics, advertising tags, chat widgets, social embeds, maps, reviews, payment interfaces, and other third-party services. These components may affect page loading or interaction responsiveness.
Potential activities include:
- Third-party script inventory
- Analytics tag review
- Advertising tag performance assessment
- Chat widget loading analysis
- Social embed review
- Video embed considerations
- Map widget loading assessment
- Dependency timing
- Unnecessary third-party resource identification
- Consent-dependent loading review
- Provider coordination
- Integration regression testing
Performance changes should preserve approved analytics, consent handling, business reporting, and other essential functions.
External scripts may remain outside direct control of the website development team.
Mobile Website Speed Optimization
Improve performance for visitors using mobile devices and varying network conditions.
Mobile users may experience reduced processing power, slower connections, limited memory, or different screen layouts. A site that performs acceptably on a powerful desktop device may still be slow on mobile.
Potential activities include:
- Mobile loading assessment
- Responsive image review
- Mobile font delivery
- JavaScript execution analysis
- Mobile interaction testing
- Touch interface responsiveness
- Mobile layout stability
- Network resource analysis
- Important mobile conversion journey testing
- Mobile-specific performance comparisons
Testing should use representative conditions rather than assume one device or network speed describes all mobile visitors.
International and Multi-Region Website Optimization
Assess performance needs for customers accessing websites from different countries.
International websites may deliver content to visitors using different networks, devices, languages, and infrastructure routes.
Potential services include:
- Target market identification
- Relevant regional performance testing
- CDN delivery assessment
- Regional resource loading
- Multilingual font considerations
- Country-specific image and content review
- International hosting limitations
- Regional website routing observations
- Localization-related script analysis
- Page template comparisons
- Performance monitoring recommendations
A measurement from one country should not be presented as proof that visitors in every other country receive the same experience.
Performance Testing, Reporting and Ongoing Optimization
Verify the effect of approved improvements and document remaining performance concerns.
Performance optimization should conclude with a comparison of relevant before-and-after measurements. The comparison must consider testing conditions, page selection, content changes, and available real-user data.
Potential activities include:
- Baseline measurement records
- Approved optimization change log
- Laboratory test comparisons
- Available field data review
- Mobile and desktop results
- Critical user journey testing
- Core Web Vitals observations
- Remaining bottleneck documentation
- External dependency limitations
- Content management recommendations
- Final technical handover
- Ongoing performance review planning
New plugins, advertising tools, images, design changes, and other website updates can affect performance after the initial work.
Recurring measurement and optimization can be discussed separately.
