mbtek.com website review

About 393 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.1 s faster on a phone.

7 files are served with short cache lifetimes, so returning visitors download them again (442 KiB).

Your mobile performance score is 61. Pages that score under 90 lose visitors before the first paint.

8 third-party services load with your homepage (Google Tag Manager, Facebook and Bing Ads and others), adding 1,021 KiB and 692 ms of main-thread time.

10 images could be 308 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 300 ms faster on a phone.

Google Tag Manager costs a phone 427 ms of main-thread work and 524 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

6 KiB could be saved by minifying JavaScript.

Polyfills for old browsers add 62 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 200 ms faster on a phone.

2 files block the first paint until they finish downloading. Deferring or inlining them could save about 200 ms.

9 long tasks block the main thread while loading, the longest for 192 ms. During a long task the page ignores taps.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Your largest element takes 13.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “Apollo 6 ton air to water heat pump installed outdoors besi…”.

The page becomes fully interactive after 13.9 s. Good is under 3.8 s.

Visually, the page fills in at 6.1 s (Speed Index). Good is under 3.4 s.

Real visitors wait 902 ms for your server to start answering (75th percentile). Good is under 800 ms.

Scripts block taps and scrolling for 358 ms in total while the page loads. Good is under 200 ms.

2 images have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' tap response (inp) went from 144 ms to 156 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.4 MB in 94 requests on a phone: scripts 1.2 MB (30), images 1,010 KiB (35) and other files 47 KiB (25). Under 2 MB keeps phones on slow connections fast.

3 images further down the page (73 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 0.67 g of CO₂e: 80.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

4 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

The homepage links to 81 pages on mbtek.com and 2 external pages.

There is no https://mbtek.com/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://mbtek.com/collections/boiler-accessories has no meta description, so Google writes the search snippet from whatever text it finds.

https://mbtek.com/system-builder-quiz has no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 55 found) and read each the way a search engine does.

1 image failed to load on a phone, for example https://bat.bing.com/action/0?ti=187126992&tm=gtm002&Ver=2&mid=08b15121-66e4-4b51-934b-6d64348fdcc1&bo=1&sid=48d97660da7f11f1bc6ca7152f398ef8&vid=48d99d60da7f11f199d1c34aac35e7a2&vids=1&msclkid=N&pi=9.

5 of 18 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

There is no form on the homepage, so every lead has to click through to another page first.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 875 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager, Meta Pixel and Microsoft Ads and 1 more (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 10 cookies, 2 of them by other companies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 17 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.