20.4 sec in total
1.8 sec
17.9 sec
655 ms
Click here to check amazing DUCO content for Netherlands. Otherwise, check out these important facts you probably never knew about duco.eu
Today DUCO is a leading European producer of ventilation and solar shading systems which guarantee "naturally" a healthy, comfortable and energy-efficient indoor climate.
Visit duco.euWe analyzed Duco.eu page load time and found that the first response time was 1.8 sec and then it took 18.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. This domain responded with an error, which can significantly jeopardize Duco.eu rating and web reputation
duco.eu performance score
name
value
score
weighting
Value10.7 s
0/100
10%
Value12.6 s
0/100
25%
Value13.7 s
2/100
10%
Value530 ms
55/100
30%
Value0.404
25/100
15%
Value18.2 s
3/100
10%
1847 ms
124 ms
141 ms
659 ms
643 ms
Our browser made a total of 144 requests to load all elements on the main page. We found that 67% of them (96 requests) were addressed to the original Duco.eu, 6% (9 requests) were made to W.sharethis.com and 3% (4 requests) were made to Wd-edge.sharethis.com. The less responsive or slowest element that took the longest time to load (10.9 sec) belongs to the original domain Duco.eu.
Page size can be reduced by 859.0 kB (25%)
3.5 MB
2.6 MB
In fact, the total size of Duco.eu main page is 3.5 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 2.5 MB which makes up the majority of the site volume.
Potential reduce by 52.7 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 52.7 kB or 82% of the original size.
Potential reduce by 127.1 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. DUCO images are well optimized though.
Potential reduce by 532.0 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 532.0 kB or 79% of the original size.
Potential reduce by 147.2 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. Duco.eu needs all CSS files to be minified and compressed as it can save up to 147.2 kB or 82% of the original size.
Number of requests can be reduced by 65 (47%)
138
73
The browser has sent 138 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DUCO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
duco.eu
1847 ms
font-awesome.css
124 ms
jquery.fancybox.css
141 ms
slick.css
659 ms
stacktable.css
643 ms
www.duco.eu.css
858 ms
select2.css
303 ms
jquery-1.10.1.min.js
197 ms
jquery-ui.css
131 ms
jquery-ui.js
430 ms
hogan.min.js
320 ms
typeahead.js
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lodash.min.js
470 ms
spin.min.js
475 ms
autocomplete.js
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tiles.js
627 ms
dealer-login.js
626 ms
social-media.js
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dealer-tools.js
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contact-forms.js
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jquery.fancybox.js
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easySlider1.7.js
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slick.min.js
798 ms
stacktable.js
933 ms
select2.min.js
1031 ms
photoswipe.css
921 ms
klass.min.js
924 ms
code.photoswipe.jquery-3.0.3.js
1079 ms
www.duco.eu.js
980 ms
buttons.js
209 ms
datepicker.js
989 ms
analytics.js
286 ms
body-banner.jpg
274 ms
logo.jpg
275 ms
country.jpg
270 ms
print-header.png
276 ms
navigation.jpg
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nl-NL%20-%20Catalogus_Systemen_BE-NL635930441749584012.jpg
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nl-NL%20-%20BUILDING_HOLLAND635930410072496562.jpg
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nl-NL%20-%20Update_Berekeningsprogramma635835401803156597.jpg
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nl-NL%20-%20Duco-installateur635654006204300671.jpg
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nl-NL%20-%20Waarom_ventileren635715267917728727.jpg
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page-banner.png
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homeplus.png
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Basisventilatie.jpg
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Buitenzonwering.jpg
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Ventilatiesystemen.jpg
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splash
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TwitterFeed
1218 ms
FacebookFeed
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YoutubeFeed
834 ms
EventsByDate
369 ms
getAllAppDefault.esi
171 ms
DealerPanel
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96%20-%20Downloads.jpg
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95%20-%20Service-Contact.jpg
7925 ms
fontawesome-webfont.woff
68 ms
99%20-%20Duco_garantie635624421021323422.jpg
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collect
37 ms
collect
273 ms
getSegment.php
266 ms
checkOAuth.esi
119 ms
45%20-%20Over%20Duco.jpg
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66%20-%20Wie_is_DUCO.jpg
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t.dhj
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cm
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x35248
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s-3271.xgi
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hbpix
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xrefid.xgi
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pixel
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2981
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index.a8fc48294ca4cc10eb440189d9f22d7c.html
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buttons.ab966a004186897711de4a5ed256c924.css
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getCount2.php
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facebook_counter.png
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linkedin_counter.png
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bubble_arrow.png
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st.125da8bfe70ad3e00a35a6e4c65d8bc5.js
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print-footer.png
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footerline.jpg
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footer.jpg
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previous.png
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next.png
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www.duco.eu-portal.css
3415 ms
www.duco.eu-portal.js
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DealerPanel
252 ms
getAllAppDefault.esi
44 ms
en-GB%20-%20Banner_Portaal_635597607304971220.jpg
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Banner_Portaal_TEAM635851721171529107.jpg
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banner2635851708769048959.jpg
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consumers-bg.jpg
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professionals-bg.jpg
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architects-bg.jpg
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collect
35 ms
getSegment.php
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checkOAuth.esi
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t.dhj
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hbpix
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cm
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getCount2.php
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mobile.duco.eu.css
112 ms
tablet.duco.eu.css
104 ms
print.duco.eu.css
109 ms
duco.eu accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
duco.eu best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
duco.eu SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Duco.eu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Duco.eu 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.
duco.eu
Open Graph data is detected on the main page of DUCO. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: