3 sec in total
274 ms
2.5 sec
244 ms
Click here to check amazing Sterko content. Otherwise, check out these important facts you probably never knew about sterko.nl
Groveko is de schoonmaakgroothandel voor innovatie en duurzaamheid in de schoonmaak. Samen lossen we jouw schoonmaakvraagstukken op!
Visit sterko.nlWe analyzed Sterko.nl page load time and found that the first response time was 274 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.
sterko.nl performance score
name
value
score
weighting
Value6.5 s
2/100
10%
Value11.7 s
0/100
25%
Value8.1 s
21/100
10%
Value1,000 ms
27/100
30%
Value0.73
6/100
15%
Value10.7 s
23/100
10%
274 ms
956 ms
178 ms
166 ms
206 ms
Our browser made a total of 74 requests to load all elements on the main page. We found that 92% of them (68 requests) were addressed to the original Sterko.nl, 3% (2 requests) were made to Googleadservices.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (956 ms) belongs to the original domain Sterko.nl.
Page size can be reduced by 429.0 kB (54%)
792.7 kB
363.6 kB
In fact, the total size of Sterko.nl main page is 792.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 463.4 kB which makes up the majority of the site volume.
Potential reduce by 55.1 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 55.1 kB or 88% of the original size.
Potential reduce by 17.1 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. Sterko images are well optimized though.
Potential reduce by 313.1 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 313.1 kB or 68% of the original size.
Potential reduce by 43.7 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. Sterko.nl needs all CSS files to be minified and compressed as it can save up to 43.7 kB or 85% of the original size.
Number of requests can be reduced by 31 (44%)
70
39
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sterko. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
sterko.nl
274 ms
www.sterko.nl
956 ms
mootools-core.js
178 ms
core.js
166 ms
caption.js
206 ms
mootools-more.js
369 ms
style.css
206 ms
style.css
207 ms
text.css
247 ms
components.css
262 ms
editor.css
267 ms
sterko_general.js
272 ms
mambojavascript.js
274 ms
script_edited.js
330 ms
script.js
347 ms
conversion.js
15 ms
analytics.js
86 ms
page_sg.jpg
89 ms
page_g.jpg
97 ms
sheet_s.png
91 ms
sheet_h.png
84 ms
sheet_v.png
98 ms
header.jpg
181 ms
nav.png
167 ms
menuseparator.png
173 ms
spacer.gif
177 ms
vmenublockheader.png
185 ms
vmenublockcontent_s.png
183 ms
vmenublockcontent_h.png
249 ms
vmenublockcontent_v.png
257 ms
vmenuitem.png
265 ms
blockheader.png
266 ms
blockcontent_s.png
272 ms
blockcontent_h.png
271 ms
blockcontent_v.png
330 ms
blockcontentbullets.png
342 ms
benelux.jpg
354 ms
metaal-industrie-kl.jpg
355 ms
scheepvaart-industrie-kl.jpg
363 ms
chemische-industrie-kl.jpg
363 ms
automotive-industrie-kl.jpg
413 ms
grafische-industrie-kl.jpg
426 ms
medische-groothandel-kl.jpg
442 ms
papierwaren-sanitair.jpg
444 ms
veiligheidsartikelen.jpg
452 ms
disposables.jpg
454 ms
handschoenen.jpg
494 ms
bedrijfskleding.jpg
512 ms
onderhoud-reiniging.jpg
532 ms
schoonmaakartikelen.jpg
533 ms
absorptiematerialen.jpg
542 ms
icon-cat.png
543 ms
60 ms
icon-actie.png
523 ms
collect
17 ms
icon-shop.png
525 ms
icon-news.png
544 ms
icon-price.png
544 ms
38 ms
icon-mail.png
549 ms
icon-tel.png
548 ms
30 ms
oxfam-novib.png
504 ms
robson.gif
520 ms
cleanfix.gif
543 ms
ecostar.gif
542 ms
vileda.gif
551 ms
numatic.gif
551 ms
kimberly-clark.gif
503 ms
tork.gif
521 ms
wings.gif
545 ms
dirks.gif
544 ms
lotus.gif
552 ms
quaron.gif
555 ms
sterko.nl accessibility score
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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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>).
sterko.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
sterko.nl SEO score
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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sterko.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 Sterko.nl 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.
sterko.nl
Open Graph description is not detected on the main page of Sterko. 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: