3.8 sec in total
905 ms
2.6 sec
270 ms
Welcome to chdr.nl homepage info - get ready to check CHDR best content right away, or after learning these important things about chdr.nl
The Centre for Human Drug Research (CHDR) specialises in innovative early clinical drug research. We do this by asking the right questions at the right moment.
Visit chdr.nlWe analyzed Chdr.nl page load time and found that the first response time was 905 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
chdr.nl performance score
name
value
score
weighting
Value2.5 s
66/100
10%
Value4.9 s
28/100
25%
Value5.3 s
58/100
10%
Value110 ms
98/100
30%
Value0.018
100/100
15%
Value5.9 s
66/100
10%
905 ms
333 ms
252 ms
452 ms
630 ms
Our browser made a total of 75 requests to load all elements on the main page. We found that 88% of them (66 requests) were addressed to the original Chdr.nl, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Staticxx.facebook.com. The less responsive or slowest element that took the longest time to load (905 ms) belongs to the original domain Chdr.nl.
Page size can be reduced by 690.3 kB (37%)
1.9 MB
1.2 MB
In fact, the total size of Chdr.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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 60.6 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 60.6 kB or 82% of the original size.
Potential reduce by 275.0 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, CHDR needs image optimization as it can save up to 275.0 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 326.9 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 326.9 kB or 72% of the original size.
Potential reduce by 27.8 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. Chdr.nl needs all CSS files to be minified and compressed as it can save up to 27.8 kB or 82% of the original size.
Number of requests can be reduced by 28 (38%)
73
45
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CHDR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.
www.chdr.nl
905 ms
cfform.js
333 ms
masks.js
252 ms
styles.css
452 ms
jquery-1.6.4.min.js
630 ms
suggest.js
274 ms
TweenMax.min.js
589 ms
jquery.easing.1.3.js
457 ms
jquery.appear-1.1.1.min.js
414 ms
jquery.carouFredSel-6.0.1.js
623 ms
jquery.lofSliderNews.js
580 ms
easytabs.js
541 ms
css
24 ms
cufon.js
580 ms
script.js
579 ms
Walkway_UltraBold_400.font.js
586 ms
Walkway_SemiBold_400.font.js
676 ms
printPage.js
626 ms
core.cfm
639 ms
engine.js
88 ms
wddx.js
89 ms
ga.js
17 ms
bgDefault.png
121 ms
logo_pink_element.png
122 ms
logo_blue_element.png
121 ms
logo_green_element.png
122 ms
logo.png
122 ms
wordpress_follow_icon.png
122 ms
Picture2.png
270 ms
trio.png
259 ms
AR_4.png
356 ms
Clinical_06-_LQ_crop.jpg
200 ms
Clinical_05A-_LQ_cropped_3.jpg
200 ms
Lab_02-_MQ_crop_1.jpg
201 ms
video_1111.png
561 ms
Clinical_06-_MQ_resized.jpg
295 ms
Clinical_03A-_MQ_resized.jpg
308 ms
Office_03B-_MQ_resized_2.jpg
345 ms
Clinical_Studies_1.jpg
354 ms
Methods4.jpg
388 ms
Consultancy1.jpg
399 ms
personSliderHeader.png
428 ms
Portraits_4by5_MQ-_A_Cohen.jpg
439 ms
Portraits_4by5_MQ-_K_Burggraaf-_A.jpg
442 ms
Portraits_4by5_MQ-_J_v_Gerven-_A.jpg
479 ms
Portraits_4by5_MQ-_G_J_Groeneveld-_A.jpg
489 ms
Portraits_4by5_MQ-_P_Peeters.jpg
512 ms
Portraits_4by5_MQ-_R_Kroon.jpg
524 ms
Portraits_4by5_MQ-_M_Rienstra.jpg
535 ms
Portraits_4by5_MQ-_I_de_Visser-_A.jpg
573 ms
Portraits_4by5_MQ-_J_Hay.jpg
580 ms
Portraits_4by5_MQ-_M_Moerland.jpg
595 ms
Portraits_4by5_MQ-_R_Rissmann.jpg
609 ms
Portraits_4by5_MQ-_B_Mooy.jpg
620 ms
Portraits_4by5_MQ-_R_Zuiker.jpg
647 ms
bgNavigation.png
662 ms
__utm.gif
16 ms
social-sprite.png
637 ms
searchIcon.png
646 ms
widgets.js
7 ms
collect
80 ms
all.js
167 ms
bgHomepage.png
584 ms
load-indicator.gif
597 ms
previous.png
628 ms
next.png
646 ms
sliderbackground.png
650 ms
readmoreBtnSprite.png
638 ms
formBtn.png
586 ms
formBtnLeft.png
596 ms
sosialBar.png
635 ms
173 ms
xd_arbiter.php
129 ms
xd_arbiter.php
260 ms
pause.png
598 ms
chdr.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.
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
chdr.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
chdr.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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chdr.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Chdr.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.
chdr.nl
Open Graph description is not detected on the main page of CHDR. 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: