Choose representative pages and journeys
Cover agreed page types such as the homepage, category, product and cart. Record device, network and cache conditions, and include important interactions rather than examining only the first page load.
Find what slows down your storefront.
Find out why pages load slowly, shift as they render or respond late to customer input. We combine PageSpeed Insights and Lighthouse diagnostics with browser investigation, code review and available real-user data to prioritize improvements to your ecommerce frontend.
Discuss your project When this
work matters.
- Mobile pages feel slow or PageSpeed results have deteriorated.
- Product pages shift during loading, or filters and cart controls respond late.
- You need an optimization plan for a storefront release, redesign or growing third-party script stack.
How we
work through it.
Separate lab results from real-user evidence
Use Lighthouse for controlled diagnostics and PageSpeed Insights for available lab and CrUX field data. Review LCP, INP and CLS where evidence exists. Record whether field results describe a specific URL or the whole origin, and do not replace missing field data with a lab score.
Trace the cost of loading and interaction
Inspect request waterfalls, images, fonts, render-blocking resources and JavaScript work. Review hydration, repeated API calls, long tasks and third-party scripts. Follow slow responses back to their source so frontend changes do not merely hide a backend delay.
Prepare changes the team can verify
Rank findings by evidence, affected journeys and implementation dependencies. Define acceptance checks and repeatable test conditions. Preserve accessibility, checkout behavior and data freshness while reducing unnecessary work.
What your
team takes away.
- Baseline for the agreed pages, devices and shopping interactions
- PageSpeed and browser findings with recorded test conditions
- Clear separation of field data, lab measurements and evidence gaps
- Prioritized tasks for assets, JavaScript, rendering and API usage
- Verification plan and a walkthrough for the implementation team
Magento 2 + VSF API.
We developed the online sales platform for United Tires. The project brought together Magento 2, a Vue Storefront frontend and VSF API, with work on performance optimization.
Before
we begin.
Is this more than running PageSpeed Insights?
Yes. Automated diagnostics identify candidates for investigation. We trace them into the page, code and dependencies, assess their effect on shopping journeys and turn them into actionable tasks for your stack.
Can you guarantee a score of 100?
No. A single lab score varies with test conditions and does not describe every customer’s experience. We agree measurable goals around loading, interaction and layout stability, with the relevant functionality preserved.
What if PageSpeed has no real-user data?
We report that limitation and use controlled browser diagnostics. If appropriate, a separate measurement setup can collect real-user evidence. Installing analytics or monitoring requires its own agreed data-handling scope.
Does this show how many shoppers the backend supports?
No. Frontend performance describes the browser experience and its dependencies. Backend readiness review and controlled load experiments answer different questions and can be scoped alongside this audit.
Will you implement the recommendations?
Implementation and a follow-up audit can be agreed separately. We provide enough context for your own team or another vendor to make the changes and repeat the relevant checks.