3.6 sec in total
384 ms
2.9 sec
301 ms
Welcome to davinci-leiden.nl homepage info - get ready to check Da Vinci Leiden best content for Netherlands right away, or after learning these important things about davinci-leiden.nl
Visit davinci-leiden.nlWe analyzed Davinci-leiden.nl page load time and found that the first response time was 384 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
davinci-leiden.nl performance score
name
value
score
weighting
Value3.2 s
45/100
10%
Value5.3 s
22/100
25%
Value4.5 s
73/100
10%
Value120 ms
97/100
30%
Value0.147
77/100
15%
Value4.0 s
87/100
10%
384 ms
1347 ms
183 ms
183 ms
183 ms
Our browser made a total of 36 requests to load all elements on the main page. We found that 89% of them (32 requests) were addressed to the original Davinci-leiden.nl, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Cms.davinci-leiden.nl. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Davinci-leiden.nl.
Page size can be reduced by 218.3 kB (34%)
650.0 kB
431.7 kB
In fact, the total size of Davinci-leiden.nl main page is 650.0 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. Images take 366.8 kB which makes up the majority of the site volume.
Potential reduce by 33.0 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 33.0 kB or 85% of the original size.
Potential reduce by 30.8 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. Da Vinci Leiden images are well optimized though.
Potential reduce by 114.6 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 114.6 kB or 58% of the original size.
Potential reduce by 39.9 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. Davinci-leiden.nl needs all CSS files to be minified and compressed as it can save up to 39.9 kB or 84% of the original size.
Number of requests can be reduced by 20 (59%)
34
14
The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Da Vinci Leiden. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
davinci-leiden.nl
384 ms
www.davinci-leiden.nl
1347 ms
controls.css
183 ms
reset.css
183 ms
text.css
183 ms
960.css
184 ms
style.css
273 ms
global.css
204 ms
davinci.css
275 ms
location-colors.css
276 ms
jquery-1.10.1.min.js
452 ms
cufon-yui.js
282 ms
calibri.js
509 ms
functions.js
363 ms
cufon-web.js
363 ms
bg.gif
156 ms
logo.png
186 ms
logo_tekst_scholengroep.png
157 ms
Kagerstraat-technasium.jpg
155 ms
organisatie_2.jpg
359 ms
LPark-2.jpg
609 ms
foto%20werving%2014%2015%20%201258.jpg
358 ms
sub_menu_bg.png
172 ms
heading_bg.png
171 ms
box_top_bg.png
199 ms
box_bg.png
260 ms
Noachstraat%20voorkant.jpg
261 ms
pand_kagerstraat.jpg
260 ms
box_bottom_bg.png
296 ms
arrow.png
350 ms
widgets.js
81 ms
twitter.png
291 ms
movie.jpg
690 ms
arrow_alt.png
321 ms
ga.js
12 ms
__utm.gif
10 ms
davinci-leiden.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
davinci-leiden.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
davinci-leiden.nl SEO score
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 Davinci-leiden.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 Davinci-leiden.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.
davinci-leiden.nl
Open Graph description is not detected on the main page of Da Vinci Leiden. 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: