siebtechnik-tema.de website review

10 files block the first paint until they finish downloading. Deferring or inlining them could save about 1.1 s.

Your mobile performance score is 69 (desktop: 88). Pages that score under 90 lose visitors before the first paint.

9 images could be 727 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 450 ms).

Google Tag Manager costs a phone 362 ms of main-thread work and 341 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.

About 52 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.

The page has 1,821 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

3 third-party services load with your homepage (Google Tag Manager, Google/Doubleclick Ads and Google Analytics), adding 342 KiB and 362 ms of main-thread time.

5 long tasks block the main thread while loading, the longest for 239 ms. During a long task the page ignores taps.

About 206 KiB of JavaScript is downloaded but never used on this page.

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

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

4 KiB could be saved by minifying JavaScript.

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.

The page becomes fully interactive after 10.3 s. Good is under 3.8 s.

The layout shifts by 0.374 while loading, so content jumps under the reader's thumb. Good is under 0.1.

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

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

Real visitors wait 1.7 s for your server to start answering (75th percentile). Good is under 800 ms.

Visually, the page fills in at 5.3 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 286 ms in total while the page loads. Good is under 200 ms.

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

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 2.6 s to 2.6 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.5 MB in 66 requests on a phone: images 1.3 MB (25), scripts 616 KiB (26) and fonts 510 KiB (3). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 0.70 g of CO₂e: 84.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

ARIA roles used must conform to valid values: 1 element on the page fails this check, rated critical by axe-core.

ARIA attributes must conform to valid values: 1 element on the page fails this check, rated critical by axe-core.

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

There is no <h1>, so neither visitors nor Google get a clear main headline.

Your title is only 23 characters: “Home - SIEBTECHNIK TEMA”. Between 30 and 65 characters leaves room to say what you do and for whom.

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

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

The homepage links to 553 pages on siebtechnik-tema.de and 6 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.

There is no https://www.siebtechnik-tema.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.

We fetched 15 pages linked from your homepage (of 199 found) and read each the way a search engine does.

26 of 62 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

Social proof on the homepage: 2 trust badges. Pairing it with named testimonials or customer logos makes it far more convincing.

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

The homepage carries about 1,653 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics and Google Tag Manager (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 1 cookie (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 3 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.