Performance & Core Web Vitals

Diagnosis and improvement of loading, responsiveness and visual stability under realistic usage conditions.

Let’s discuss your project

THE CHALLENGE

Speed your users
can actually feel.

Heavy media, third-party scripts and slow dynamic requests can make a carefully designed platform frustrating, especially on phones and constrained networks.

WHAT IS INCLUDED

A clear scope.
A clear handover.

We examine LCP, INP and CLS together with server behaviour and critical journeys. Improvements are prioritized by practical impact and measured again after implementation.

  • Core Web Vitals diagnostics
  • Image, video & font optimization
  • JavaScript & third-party audits
  • Rendering & interaction improvements
  • Caching & backend profiling
  • Performance budgets & monitoring

FROM PLAN TO PRACTICE

The right decisions.
At every stage.

Diagnose the cause before optimizing

We compare lab tests with available real-user evidence and examine specific templates. LCP concerns the appearance of main content, INP interaction responsiveness and CLS visual stability. Network activity, rendering and backend behaviour are investigated to identify causes rather than chasing a score in isolation. Priorities follow the devices and journeys that affect the audience most, giving the team an explanation of which improvements should matter in everyday use.

Reduce weight and load work in the right order

Images and fonts are optimized, unnecessary JavaScript is reduced and the timing of third-party scripts is reviewed. The first viewport receives priority while media further down the page may load later. Video decisions include the poster, format, dimensions and whether playback should follow user interaction. Backend profiling examines queries, caching and response time so frontend improvements are supported by a consistent application rather than masking a slow dynamic request.

Verify the result and prevent regression

Agreed measurements are repeated after implementation with comparable conditions where possible. Field data takes time to reflect a new release, so immediate lab findings are distinguished from real-user evidence. We propose budgets for images, scripts and critical templates, alongside checks before major campaigns or integrations. These controls help preserve improvements as content and functionality expand, without promising a fixed score across every device, network and external service.

HOW WE CHECK THE RESULT

Working is the start.
It has to work for you.

We record a baseline and repeat comparable checks after changes, noting the device, conditions and pages tested. Forms, transactions and consent must continue to work. Available real-user data is assessed separately from laboratory tests. Handover includes results, remaining constraints and practical rules for new media and tools introduced by your team.

TECHNOLOGY IN CONTEXT

PageSpeed InsightsChrome DevToolsCrUXLighthouseServer profiling

FREQUENT QUESTIONS

Answers.
Clear from the start.

What working together involves, and what you need to know before we begin.

Do you guarantee a 100/100 PageSpeed score?

No. Lab scores depend on the scenario and do not represent every visitor. We target a better real experience, with documented results and the functionality your business needs.

Can the website still use video and animation?

Yes, with appropriate sizes, controlled loading and respect for motion preferences. We pay particular attention to the first viewport so media does not delay essential content.

Why do real-user measurements not change immediately after improvements?

Real visits accumulate over time and vary by device, connection and page. A recent change is first verified with comparable tests. We then assess available usage data, without treating one laboratory result as a complete picture of the experience across your website.

How are cost and timeline determined?

Scope, the state of your existing platform, dependencies and required checks. Before work begins, a specific proposal records deliverables, prerequisites and approval stages. Software licences, third-party charges and recurring services are separated so you understand what the engagement includes and what affects a later change.

What support will we have after handover?

We hand over the documentation and instructions included in the agreed scope. Responsibilities for daily operation, issue reporting and future requirements are defined. Ongoing support, updates and monitoring have an explicit, separately agreed scope rather than relying on an assumption that someone will take care of them.