sw.siemens.com website review

About 515 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 2.6 s faster on a phone.

5 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.6 s.

14 images could be 585 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 650 ms faster on a phone.

Your mobile performance score is 66. Pages that score under 90 lose visitors before the first paint.

About 142 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 600 ms faster on a phone.

24 files are served with short cache lifetimes, so returning visitors download them again (91 KiB).

The page has 2,485 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

2 long tasks block the main thread while loading, the longest for 124 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.

3 KiB could be saved by minifying JavaScript.

1 third-party service load with your homepage (niceincontact.com), adding 4 KiB and 1 ms of main-thread time.

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 14.8 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image “An automation engineer working in a high-tech facility, vie…”.

The page becomes fully interactive after 15.0 s. Good is under 3.8 s.

Visually, the page fills in at 6.0 s (Speed Index). Good is under 3.4 s.

Real visitors wait 2.6 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors wait 317 ms for the page to respond to a tap (75th percentile). Good is under 200 ms.

Real visitors see the first content after 2.4 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.5 s for your server to start answering (75th percentile). Good is under 800 ms.

The first text or image appears after 2.6 s on a phone. Good is under 1.8 s.

3 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 328 ms to 312 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-31, real Chrome visitors' largest content (lcp) went from 3.4 s to 3.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 3.0 MB in 89 requests on a phone: images 1.1 MB (27), scripts 998 KiB (33) and fonts 424 KiB (6). Under 2 MB keeps phones on slow connections fast.

bx-overview-panoramic-city-skyline-is485896260-xcelerator-sh is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

8 images further down the page (417 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 0.84 g of CO₂e: 100.4 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

15 images have no alt text, which hurts accessibility and image search.

Heading levels should only increase by one: 1 element on the page fails this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

7 form fields have no label, so screen readers announce an empty box and autofill guesses.

1 visible link has no text or label, so screen readers cannot say where it goes.

ARIA role should be appropriate for the element: 1 element on the page fails this check, rated minor by axe-core.

Your title is only 22 characters: “Siemens home | Siemens”. Between 30 and 65 characters leaves room to say what you do and for whom.

10 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

The homepage links to 55 pages on sw.siemens.com and 17 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.siemens.com/en-us/products/tia-portal/eigen-engineering-agent, https://www.siemens.com/en-us/products/simcenter/mechanical-simulation/femap and https://www.siemens.com/en-us/products/avasis-teamcenter-medical-device-solution-tc-mds have no <h1> headline, so visitors and search engines get no clear main topic.

https://www.siemens.com/en-us/products and https://www.siemens.com/en-us/products/avasis-teamcenter-medical-device-solution-tc-mds have 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 29 found) and read each the way a search engine does.

1 image is served at too low a resolution for sharp phone screens.

Large scripts ship without source maps.

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

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 921 words of visible text.

Opening the homepage sets 6 cookies (measured from a US location before any click).

Loading the homepage contacts 7 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.