Writing

Case study

protectorguardrail.com: 99 performance, 100 everywhere else

A multilingual industrial-products site I built and tuned end to end, measured with Lighthouse 12 on the mobile preset: 1.7 s LCP, 0.052 CLS, 0 ms TBT.

protectorguardrail.com is a multilingual site for industrial products. I built it and tuned it end to end, so there is no separate “someone else’s theme” to blame or credit — the markup, the styling and the delivery are all mine.

What the numbers are

Measured with Lighthouse 12 on the mobile preset, with moto-g-class throttling, on 5 August 2026:

The headline lab metrics from the same run: LCP 1.7 s, CLS 0.052, TBT 0 ms.

A perfect 100 on accessibility, best practices and SEO is worth stating plainly because it was scored under mobile throttling, not on a desktop run where everything looks good. The 0 ms total blocking time means the main thread is never busy long enough to swallow a tap — there is simply not enough JavaScript on the page for that to happen.

How it was measured

Lighthouse 12, mobile preset, on 5 August 2026. That is a lab run: a simulated mid-range Android on a throttled connection, not a summary of what every real visitor experienced. Lab numbers are reproducible, which is exactly what makes them useful as a claim — you can re-run them.

So do. The full run is public:

PageSpeed Insights run for protectorguardrail.com

Scores move as browsers, Lighthouse versions and the site itself change, so a run you do today may not match the figures above to the decimal. The point is that the run exists, it is not mine to edit, and you can check it yourself.

Alfred Westerveld