heraeus-electronics.com website review

About 285 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.6 s faster on a phone.

9 files are served with short cache lifetimes, so returning visitors download them again (14.7 MB).

7 images could be 1.1 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Your mobile performance score is 59 (desktop: 89). Pages that score under 90 lose visitors before the first paint.

3 files block the first paint until they finish downloading. Deferring or inlining them could save about 800 ms.

About 76 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

5 long tasks block the main thread while loading, the longest for 187 ms. During a long task the page ignores taps.

The HTML itself could arrive sooner: redirects, a slow server response or missing compression delay everything after it.

1 third-party service load with your homepage (cookiefirst.com), adding 91 KiB and 16 ms of main-thread time.

Desktop scores 89 but mobile only 59. A gap that wide usually means heavy scripts and images that hit phones hardest.

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.

Real visitors wait 2.3 s for your server to start answering (75th percentile). Good is under 800 ms.

Your largest element takes 8.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Our website uses various services that employ cookies or si…”.

The first text or image appears after 6.1 s on a phone. Good is under 1.8 s.

The page becomes fully interactive after 8.6 s. Good is under 3.8 s.

Visually, the page fills in at 6.4 s (Speed Index). Good is under 3.4 s.

Real visitors wait 3.1 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 2.5 s (75th percentile). Good is under 1.8 s.

Your homepage downloads 17.3 MB in 51 requests on a phone: media 14.7 MB (1), images 1.3 MB (7) and scripts 502 KiB (15). Under 2 MB keeps phones on slow connections fast.

1 image is downloaded at several times the size a phone draws it, for example heraeus-electroncs-productsand solutions.jpg.jpeg at 1,200 px wide, shown at 238 px. Resized copies would save about 174 KiB.

By the Sustainable Web Design model, a visit to your homepage emits about 4.91 g of CO₂e: 589.4 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

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

All page content should be contained by landmarks: 7 elements on the page fail this check, rated moderate by axe-core.

Elements with visible text labels do not have matching accessible names. (2 elements).

No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

No Open Graph image (also missing: og:title, og:description), so links shared on LinkedIn, Slack or Facebook show no preview picture.

3 links have no real href, so search engines can't follow them.

No twitter:card tag. X falls back to Open Graph, which is incomplete here.

The homepage links to 28 pages on heraeus-electronics.com and 3 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.

The HTML your server sends has 279 of the 489 words a browser shows. AI crawlers don't run JavaScript, so they miss the rest.

There is no /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.

/en/e-shop, /en/about-heraeus-electronics/about-us, /en/news-and-insights/insights/The-Hidden-Cost-of-Every-Additional-Firing-Cycle-, /en/news-and-insights/insights, /en/refer-privacy-policy and /en/working-at-heraeus-electronics and 7 others have no meta description, so Google writes the search snippet from whatever text it finds.

Your homepage links to 1 page by a URL that isn't its canonical one, for example /en/refer-privacy-policy, whose canonical is /en/privacy-policy. Linking straight to the canonical URL saves crawlers a detour and keeps ranking signals on one address.

/en/news-and-insights/insights has under 150 words in the HTML. Thin pages rarely rank; if the text loads with JavaScript, crawlers that don't run it see even less.

We fetched 15 pages linked from your homepage (of 25 found) and read each the way a search engine does.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

Large scripts ship without source maps.

http://heraeus-electronics.com does not redirect to https, so some visitors land on the insecure version.

No Content-Security-Policy header, the main browser-side defence against injected scripts.

Opening https://heraeus-electronics.com goes through 2 redirects before the homepage loads.

X-XSS-Protection is set to “1”; the header is deprecated and can introduce bugs. Use 0 or remove it.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

heraeus-electronics.com has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

heraeus-electronics.com's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.

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

No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

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 489 words of visible text.

We found no DKIM key on the selectors the big email providers use. If you send through one of them, turning on DKIM signing improves delivery.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

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