rubig.com website review

12 files are served with short cache lifetimes, so returning visitors download them again (353 KiB).

Your mobile performance score is 88 (desktop: 98). Pages that score under 90 lose visitors before the first paint.

1 file blocks the first paint until they finish downloading. Deferring or inlining it could save about 550 ms.

About 50 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 300 ms faster on a phone.

About 36 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 300 ms faster on a phone.

The page has 1,508 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

5 images could be 151 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 200 ms faster on a phone.

1 third-party service load with your homepage (datareporter.eu), adding 56 KiB and 16 ms of main-thread time.

12 KiB could be saved by minifying JavaScript.

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

Your largest element takes 3.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “PACVD internal coating: violet glowing plasma envelops stee…”.

1 image is downloaded at several times the size a phone draws it, for example pvd-beschichtungsanlage-lotus-pvd-anlage-equipment-system-pe at 1,200 px wide, shown at 332 px. Resized copies would save about 16 KiB.

3 images (179 KiB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

5 images further down the page (259 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 0.32 g of CO₂e: 38.9 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

5 elements have a tabindex above 0, which scrambles the keyboard order.

1 text element doesn't have enough contrast against the background to read easily, especially outdoors on a phone.

1 tap target is too small or too close together to hit reliably with a finger.

All page content should be contained by landmarks: 5 elements on the page fail this check, rated moderate by axe-core.

3 visible links have no text or label, so screen readers cannot say where they go.

1 form field has no label, so screen readers announce an empty box and autofill guesses.

1 link inside paragraphs relies on colour alone to stand out.

Headings skip levels (h1 → h5), which makes the page harder to scan with a screen reader.

Elements with visible text labels do not have matching accessible names. (1 element).

Structured data found (BreadcrumbList) but with 1 problem, for example “ld+json block 2 is not valid JSON (Bad control character in string literal in JSON at position )”.

No twitter:card tag. X falls back to Open Graph, which is set, so this is minor.

The homepage links to 129 pages on rubig.com and 16 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

https://www.rubig.com/en/industrial-furnaces and https://www.rubig.com/en/industrial-furnaces/plasma-nitriding-system took over 3 s to send their HTML from our server.

We fetched 15 pages linked from your homepage (of 72 found) and read each the way a search engine does.

13 of 36 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.

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 1,040 words of visible text.

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 1 host run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.