7.4 sec in total
537 ms
6.5 sec
418 ms
Welcome to vandenbergisolatie.nl homepage info - get ready to check Van Den Berg Isolatie best content right away, or after learning these important things about vandenbergisolatie.nl
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Visit vandenbergisolatie.nlWe analyzed Vandenbergisolatie.nl page load time and found that the first response time was 537 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
vandenbergisolatie.nl performance score
name
value
score
weighting
Value5.2 s
8/100
10%
Value28.4 s
0/100
25%
Value20.1 s
0/100
10%
Value1,780 ms
10/100
30%
Value0.382
27/100
15%
Value26.3 s
0/100
10%
537 ms
532 ms
451 ms
32 ms
19 ms
Our browser made a total of 123 requests to load all elements on the main page. We found that 80% of them (99 requests) were addressed to the original Vandenbergisolatie.nl, 7% (8 requests) were made to Youtube.com and 6% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Vandenbergisolatie.nl.
Page size can be reduced by 90.2 kB (2%)
4.8 MB
4.8 MB
In fact, the total size of Vandenbergisolatie.nl main page is 4.8 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.3 MB which makes up the majority of the site volume.
Potential reduce by 76.0 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 76.0 kB or 82% of the original size.
Potential reduce by 3.2 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. Van Den Berg Isolatie images are well optimized though.
Potential reduce by 6.7 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. This website has mostly compressed JavaScripts.
Potential reduce by 4.3 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. Vandenbergisolatie.nl has all CSS files already compressed.
Number of requests can be reduced by 39 (36%)
109
70
The browser has sent 109 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Van Den Berg Isolatie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
vandenbergisolatie.nl
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www.vandenbergisolatie.nl
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www.vandenbergisolatie.nl
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css2
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jquery.min.js
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bootstrap.min.css
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system.css
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blogslider.css
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jquery-migrate-1.2.1.min.js
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VerduurzamingvoormaligmarechausseekazerneinAssen.jpg
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SpouwmuurisolatieinKlazienaveen.jpg
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SubsidieEnergiebesparingEigenHuisSEEH.jpg
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IsolerennieuwbouwglijbaantorenvakantieparkNooitgedacht.jpg
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DuurzameinvesteringbewonersBorger-Odoorndoorisolerenvloerenspouw.jpg
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MonumentaalpandteWinschotenmetveelzorggesoleerd.jpg
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Optimalespouw-envloerisolatiebungalowteHoogeveen.jpg
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NieuwebewonerswoonhuisDokkumzittenerwarmpjesbijdoordecompletewoningschilteisoleren.jpg
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BurenteAlteveerlatengezamenlijkhunspouwisolerenmetgrijzethermoparels.jpg
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Directbesparenmetdak-enbodemisolatiewoningteSteenwijk.jpg
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WoonhuisteSmildebespaardopenergieverbruikdoorisolerendakenspouw.jpg
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Vloerwoonhuisjaren70teDalfsenvakkundiggesoleerdmetpolyurethaan-1.jpg
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EnergiebesparendoorvloerisolatiewoningteUrk.jpg
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SpouwmuurvrijstaandewoninginRodenvakkundiggesoleerdmetmineralewol.jpg
1298 ms
WoningGroningenbespaardopenergieverbruikdoorspouwmuur-enbodemisolatie.jpg
1484 ms
Spouwenvloerjaren60woningteWagenborgenvakkundiggesoleerd.jpg
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Woningte1eExlormondgaatbesparenopenergiekostendoorspouwmuurisolatie.jpg
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IsolerenzoldermurenwoningteKielWindeweer.jpg
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IsolerenbeganegrondvloerwoningteAssenmetpolyurethaan-1.jpg
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SpouwmuurisolatieenvloerisolatievoorwoningteZuidlaren.jpg
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SpouwmuurisolerenwoninginWesterbroekmetHREPSthermoparels.jpg
1560 ms
IsolerenvloervrijstaandewoningteSchoonebeek.jpg
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Muurisolatievoorwoningjaren20inNieuwePekela-1.jpg
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DakisolerenwoningteIjsselmuiden.jpg
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IsolerenspouwmurenwooncomplexteWormerveermetmineralewolvanIsover.jpg
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IsolerenkapwoninginPaterswoldemetpolyurethaan.jpg
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VerduurzamingvoormaligmarechausseekazerneinAssen.jpg
467 ms
SpouwmuurisolatieinKlazienaveen.jpg
372 ms
SpouwmurenisolerenwoningZwiggelte.jpg
279 ms
SubsidieEnergiebesparingEigenHuisSEEH.jpg
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SpouwmuurisolatiewoonhuisteEext.jpg
284 ms
IsolerennieuwbouwglijbaantorenvakantieparkNooitgedacht.jpg
560 ms
IsolerenvloermuurendakvrijstaandewoningHavenkwartierteDeventer.jpg
467 ms
FlinkeenergiebesparingwoningZuidbroekmetmuurisolatie-1.jpg
557 ms
DuurzameinvesteringbewonersBorger-Odoorndoorisolerenvloerenspouw.jpg
653 ms
MonumentaalpandteWinschotenmetveelzorggesoleerd.jpg
929 ms
Optimalespouw-envloerisolatiebungalowteHoogeveen.jpg
654 ms
NieuwebewonerswoonhuisDokkumzittenerwarmpjesbijdoordecompletewoningschilteisoleren.jpg
654 ms
BurenteAlteveerlatengezamenlijkhunspouwisolerenmetgrijzethermoparels.jpg
652 ms
Directbesparenmetdak-enbodemisolatiewoningteSteenwijk.jpg
745 ms
WoonhuisteSmildebespaardopenergieverbruikdoorisolerendakenspouw.jpg
745 ms
Vloerwoonhuisjaren70teDalfsenvakkundiggesoleerdmetpolyurethaan-1.jpg
932 ms
EnergiebesparendoorvloerisolatiewoningteUrk.jpg
840 ms
SpouwmuurvrijstaandewoninginRodenvakkundiggesoleerdmetmineralewol.jpg
840 ms
WoningGroningenbespaardopenergieverbruikdoorspouwmuur-enbodemisolatie.jpg
931 ms
Spouwenvloerjaren60woningteWagenborgenvakkundiggesoleerd.jpg
932 ms
Woningte1eExlormondgaatbesparenopenergiekostendoorspouwmuurisolatie.jpg
1027 ms
IsolerenzoldermurenwoningteKielWindeweer.jpg
1026 ms
SpouwmuurisolatieenvloerisolatievoorwoningteZuidlaren.jpg
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Muurisolatievoorwoningjaren20inNieuwePekela-1.jpg
1116 ms
DakisolerenwoningteIjsselmuiden.jpg
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IsolerenspouwmurenwooncomplexteWormerveermetmineralewolvanIsover.jpg
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IsolerenkapwoninginPaterswoldemetpolyurethaan.jpg
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vandenbergisolatie.nl 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
<frame> or <iframe> elements do not have a title
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
vandenbergisolatie.nl 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
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
vandenbergisolatie.nl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
NL
NL
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vandenbergisolatie.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Vandenbergisolatie.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
vandenbergisolatie.nl
Open Graph data is detected on the main page of Van Den Berg Isolatie. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: