2.9 sec in total
564 ms
2.1 sec
197 ms
Visit erfelijkheid.nl now to see the best up-to-date Erfelijkheid content for Netherlands and also check out these interesting facts you probably never knew about erfelijkheid.nl
erfelijkheid.nl
Visit erfelijkheid.nlWe analyzed Erfelijkheid.nl page load time and found that the first response time was 564 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
erfelijkheid.nl performance score
name
value
score
weighting
Value4.3 s
17/100
10%
Value8.0 s
2/100
25%
Value4.8 s
67/100
10%
Value140 ms
96/100
30%
Value0.017
100/100
15%
Value5.9 s
66/100
10%
564 ms
169 ms
171 ms
171 ms
173 ms
Our browser made a total of 77 requests to load all elements on the main page. We found that 79% of them (61 requests) were addressed to the original Erfelijkheid.nl, 5% (4 requests) were made to Platform.twitter.com and 4% (3 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (946 ms) belongs to the original domain Erfelijkheid.nl.
Page size can be reduced by 1.1 MB (57%)
1.9 MB
828.8 kB
In fact, the total size of Erfelijkheid.nl main page is 1.9 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. 50% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 118.5 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 118.5 kB or 77% of the original size.
Potential reduce by 54.8 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. Obviously, Erfelijkheid needs image optimization as it can save up to 54.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 704.6 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 704.6 kB or 67% of the original size.
Potential reduce by 214.5 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. Erfelijkheid.nl needs all CSS files to be minified and compressed as it can save up to 214.5 kB or 83% of the original size.
Number of requests can be reduced by 50 (67%)
75
25
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Erfelijkheid. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 32 to 1 for CSS and as a result speed up the page load time.
erfelijkheid.nl
564 ms
system.base.css
169 ms
system.menus.css
171 ms
system.messages.css
171 ms
system.theme.css
173 ms
views_slideshow.css
171 ms
date.css
242 ms
field.css
249 ms
node.css
250 ms
search.css
250 ms
user.css
249 ms
views.css
250 ms
ctools.css
323 ms
lucius-special.css
331 ms
lucius-special-colors.css
333 ms
printlinks.css
334 ms
views_slideshow_cycle.css
335 ms
bjqs.css
335 ms
font-awesome.css
407 ms
overrides.css
414 ms
alpha-reset.css
415 ms
alpha-mobile.css
416 ms
alpha-alpha.css
416 ms
omega-text.css
417 ms
omega-branding.css
489 ms
omega-menu.css
497 ms
omega-forms.css
497 ms
omega-visuals.css
499 ms
global.css
665 ms
bootstrap.min.css
711 ms
mobile_overrides.css
573 ms
js_0COVBpv8AmCp1eYbJorfVMF86WnzhlW_XP3mo2sFaCQ.js
910 ms
js_VmFLhcGX6Nx-AtUuBGyRLaVrzIz-dzTQl2oMrzFzWzU.js
663 ms
js_25wY0dN8P17_bI7QCvjoRZKSyP0-Tv1-gUJavUVWTW0.js
583 ms
js_CTytbjvBXsyRSykVJ7N5AkvxVNrO0qEnPorJndRJV_8.js
656 ms
js
32 ms
js_HSrVP12GLTMMPGKQQnKYZrR99t9QC5j9WpTrlnPAU_g.js
946 ms
addthis_widget.js
9 ms
js_dE2Ts0W-rd1GJaEyHDDFbVIlgIDItd8VX_3IAJcNq8s.js
676 ms
js_hNq_URxEJfuwY3bkEDHgbY9eyC425AFQNbEY76Ar3Qk.js
590 ms
analytics.js
94 ms
logo.png
92 ms
rotate.php
563 ms
print_icon.gif
93 ms
mail_icon.gif
93 ms
pdf_icon.gif
93 ms
Overlay%20voor%20slider%20op%20homepage.png
229 ms
Header%20Special%20Kansen_1.jpg
250 ms
special%20blauw.png
251 ms
NGS_top_0_0.png
504 ms
special%20rose_1.png
252 ms
erfomaster%201%20-%20DSCF0309%202_0.JPG
347 ms
special%20rose_0.png
333 ms
handen_0.JPG
417 ms
special%20rose.png
337 ms
topfoto_dementie.jpg
499 ms
special%20oranje_0.png
421 ms
foto%20donker%20stel.jpg
513 ms
1ziekten.jpg
668 ms
1erfelijkheid.jpg
669 ms
1genetischonderzoek.jpg
667 ms
icon_facebook.png
670 ms
bg.png
576 ms
erfelijkheid%20overlay.png
600 ms
widgets.js
82 ms
300lo.json
51 ms
collect
33 ms
sh.7c7179124ea24ac6ba46caac.html
26 ms
layers.3643cb2e25fb91c29386.js
16 ms
timeline.1b43d11859b7663a2225b885f87704a5.js
123 ms
syndication
101 ms
344738624421634048
123 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
28 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
57 ms
cRJXnn0z_normal.jpeg
29 ms
cc9db23c5eaea44fe68484614b408049_normal.jpeg
30 ms
CcYFBYJW4AA15kX.jpg:small
29 ms
erfelijkheid.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
erfelijkheid.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
erfelijkheid.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
Tap targets are not sized appropriately
NL
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Erfelijkheid.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 Erfelijkheid.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.
erfelijkheid.nl
Open Graph description is not detected on the main page of Erfelijkheid. 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: