Website speed is no longer a “nice to have” — it directly affects your Google rankings, how many visitors stay, and even how much you pay for ads. We recently built a client website that scores a perfect 100/100 on Google PageSpeed Insights (desktop), with a Largest Contentful Paint of just 1.1 seconds and zero layout shift. Here is why that matters, and how we did it.

Why website speed matters

• SEO: Google uses Core Web Vitals as a ranking signal. Faster sites tend to rank higher.
• Conversions: Most visitors abandon a page that takes more than three seconds to load. Speed means more leads and sales.
• Ad cost: Google Ads rewards fast landing pages with a better Quality Score, which lowers your cost-per-click.

What the scores mean

Google measures four areas — Performance, Accessibility, Best Practices and SEO — plus three Core Web Vitals:

• LCP (Largest Contentful Paint): how fast the main content loads. Target under 2.5s. Our result: 1.1s.
• CLS (Cumulative Layout Shift): how stable the layout is. Target under 0.1. Our result: 0.
• TBT / INP (responsiveness): how quickly the page reacts. Our result: 0ms.

How we hit 100/100

There is no single trick — it is a series of careful optimisations:

• Compressed and converted images to modern formats (WebP), with lazy loading.
• Enabled full-page caching plus GZIP/Brotli compression.
• Deferred non-critical JavaScript and inlined critical CSS.
• Reserved space for images and fonts to eliminate layout shifts.
• Used a CDN and minified all assets.
• Fixed accessibility and technical SEO issues along the way.

Is your website fast enough?

If your site feels slow or you are losing visitors, a performance audit will show exactly what to fix. Request a free Website Audit & Performance check from Consult One — we will measure your scores and give you a clear plan to make your site fast, secure and ready to rank.