3.3 sec in total
615 ms
2.3 sec
374 ms
Welcome to zub-systems.de homepage info - get ready to check ZUB Systems best content for Germany right away, or after learning these important things about zub-systems.de
Wir bieten Ihnen eine breite Palette an Ingenieurdienstleistungen rund um die energetische Bilanzierung und Bauphysik an.
Visit zub-systems.deWe analyzed Zub-systems.de page load time and found that the first response time was 615 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
zub-systems.de performance score
name
value
score
weighting
Value3.4 s
37/100
10%
Value7.0 s
6/100
25%
Value5.9 s
48/100
10%
Value260 ms
83/100
30%
Value0.867
4/100
15%
Value9.3 s
31/100
10%
615 ms
189 ms
196 ms
198 ms
196 ms
Our browser made a total of 93 requests to load all elements on the main page. We found that 81% of them (75 requests) were addressed to the original Zub-systems.de, 8% (7 requests) were made to Apis.google.com and 3% (3 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Zub-systems.de.
Page size can be reduced by 369.8 kB (29%)
1.3 MB
890.0 kB
In fact, the total size of Zub-systems.de main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 763.3 kB which makes up the majority of the site volume.
Potential reduce by 83.0 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 83.0 kB or 82% of the original size.
Potential reduce by 21.0 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. ZUB Systems images are well optimized though.
Potential reduce by 211.5 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 211.5 kB or 64% of the original size.
Potential reduce by 54.2 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Zub-systems.de needs all CSS files to be minified and compressed as it can save up to 54.2 kB or 81% of the original size.
Number of requests can be reduced by 52 (57%)
92
40
The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZUB Systems. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.
zub-systems.de
615 ms
aggregator.css
189 ms
content.css
196 ms
event.css
198 ms
extlink.css
196 ms
codefilter.css
197 ms
flash_gallery.css
199 ms
image_gallery.css
282 ms
forum.css
290 ms
collapsiblock.css
290 ms
logintoboggan.css
291 ms
node.css
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defaults.css
291 ms
system.css
376 ms
user.css
383 ms
devel.css
384 ms
alinks.css
384 ms
style.css
387 ms
superfish.css
384 ms
home.css
472 ms
jquery.js
576 ms
drupal.js
478 ms
extlink.js
478 ms
compat.js
479 ms
jstools.js
480 ms
collapsiblock.js
566 ms
jquery.cookie.js
592 ms
startstop-slider.js
591 ms
api.js
48 ms
jquery.qtip-1.0.0-rc3.min.js
602 ms
ga.js
139 ms
recaptcha__de.js
193 ms
logo-banner-zub-systems.png
385 ms
nav_bg.png
152 ms
home.png
151 ms
nav_back.png
153 ms
user.png
150 ms
search.png
151 ms
guetesiegel18599_200px.png
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helena_sommer_box.jpg
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helena_sommer_Bezugstemp.jpg
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helena_sommer_Komfort.jpg
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argos_home_2014_200px.png
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argos2014_waermestromeinspeisung_200px.png
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argos2014_waermeflussdarstellung_200px.png
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argos2014_waermebrueckenkatalog_DIN_EN_ISO_14683_200px.png
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aktuelles.png
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spotlight.png
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zub%20sommer_logo1.jpg
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lueftungskonzept_home_small.jpg
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box-screen.png
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box-screen.png
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icon.png
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icon.png
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zub_esther_slide002.png
802 ms
tc02_logo.png
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tc11_insulation.png
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tc02_home.png
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consulting_logo.png
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Kombiangebot31.png
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icon.gif
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zub-systems.png
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widgets.js
145 ms
plusone.js
208 ms
superfish-all-min.js
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__utm.gif
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18599GG.png
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back_to_top.png
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page_white_go.png
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bglines.png
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extlink.png
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button.831500944bc3eb7ea5276ccdc3f71d2e.js
135 ms
cb=gapi.loaded_0
21 ms
cb=gapi.loaded_1
52 ms
fastbutton
109 ms
expanded.png
748 ms
player_pause.png
749 ms
player_fastfwd.png
749 ms
postmessageRelay
42 ms
follow_button.6a78875565a912489e9aef879c881358.de.html
63 ms
api.js
53 ms
core:rpc:shindig.random:shindig.sha1.js
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2536007149-postmessagerelay.js
82 ms
cb=gapi.loaded_0
49 ms
cb=gapi.loaded_1
46 ms
jot
103 ms
arrows-ffffff.png
98 ms
shadow.png
98 ms
zub-systems.de accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
button, link, and menuitem elements do not have accessible names.
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
[role]s do not have all required [aria-*] attributes
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
zub-systems.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
zub-systems.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zub-systems.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Zub-systems.de main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
zub-systems.de
Open Graph description is not detected on the main page of ZUB Systems. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: