3.5 sec in total
801 ms
2.5 sec
265 ms
Click here to check amazing Science Plus content. Otherwise, check out these important facts you probably never knew about scienceplus.nl
Distributeur wetenschappelijke software, gericht op universiteiten, hogescholen, overheden en onderzoeksinstituten
Visit scienceplus.nlWe analyzed Scienceplus.nl page load time and found that the first response time was 801 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.
scienceplus.nl performance score
name
value
score
weighting
Value3.4 s
39/100
10%
Value11.7 s
0/100
25%
Value7.6 s
26/100
10%
Value1,040 ms
26/100
30%
Value0.003
100/100
15%
Value9.8 s
28/100
10%
801 ms
268 ms
527 ms
14 ms
30 ms
Our browser made a total of 79 requests to load all elements on the main page. We found that 65% of them (51 requests) were addressed to the original Scienceplus.nl, 10% (8 requests) were made to Apis.google.com and 5% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (801 ms) belongs to the original domain Scienceplus.nl.
Page size can be reduced by 703.1 kB (56%)
1.3 MB
560.5 kB
In fact, the total size of Scienceplus.nl main page is 1.3 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. 60% of websites need less resources to load. Javascripts take 488.0 kB which makes up the majority of the site volume.
Potential reduce by 118.3 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. This page needs HTML code to be minified as it can gain 41.9 kB, which is 31% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 118.3 kB or 88% of the original size.
Potential reduce by 96.9 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, Science Plus needs image optimization as it can save up to 96.9 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 333.1 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 333.1 kB or 68% of the original size.
Potential reduce by 154.8 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. Scienceplus.nl needs all CSS files to be minified and compressed as it can save up to 154.8 kB or 87% of the original size.
Number of requests can be reduced by 22 (29%)
75
53
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Plus. 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 as a result speed up the page load time.
www.scienceplus.nl
801 ms
5a564223aa51673c1095c0e062775295.css
268 ms
80a65e040a9b1f7b68058e8321c757d6.js
527 ms
conversion.js
14 ms
analytics.js
30 ms
plusone.js
82 ms
ga.js
29 ms
header-background.png
118 ms
flag-default.png
117 ms
flag-en.png
116 ms
flag-de.png
210 ms
logo-scienceplus-nl.png
211 ms
search-button.png
210 ms
logo-rug-cart.png
210 ms
shopping-basket.png
209 ms
phone.png
205 ms
e-prime.jpg
288 ms
rel14-dvd-cover-3d.png
396 ms
chemoffice.png
284 ms
usp-no-prepayment.png
283 ms
usp-fastdelivery.png
284 ms
usp-alwaysfastreply.png
287 ms
psychologie.jpg
395 ms
qda.jpg
396 ms
statistiek.jpg
395 ms
overig.jpg
396 ms
Delft.jpg
455 ms
erasmus_universiteit_rotterdam_64417.jpg
454 ms
ErasmusMC.jpg
460 ms
GGDAmsterdam.jpg
459 ms
logo-Universiteit-Wageningen.jpg
462 ms
Logo-universiteit-Leiden-31.jpg
464 ms
logoUniversiteitUtrecht.jpg
539 ms
Maastricht.jpg
540 ms
Nijenrode.jpg
541 ms
pict_universiteitvanamsterdam.jpg
542 ms
radboud-universiteit-logo.jpg
542 ms
RevalidatieFR..jpg
542 ms
rivm.jpg
626 ms
Tilburg.jpg
625 ms
Twente.jpg
627 ms
university_of_groningen_logo.jpg
628 ms
vu_logo.jpg
619 ms
collect
21 ms
collect
110 ms
__utm.gif
40 ms
all.js
280 ms
HlaektNAGXsvMSzJmADIXOvvDin1pK8aKteLpeZ5c0A.woff
40 ms
cb=gapi.loaded_0
32 ms
widgets.js
90 ms
78 ms
cb=gapi.loaded_1
39 ms
fastbutton
94 ms
VUMC.jpg
522 ms
twitter-bird.png
603 ms
Contact-Abel-Keun.jpg
573 ms
postmessageRelay
61 ms
80 ms
button.0308b81ff1714e446f674b5b9793f2cd.js
136 ms
cb=gapi.loaded_0
16 ms
cb=gapi.loaded_1
17 ms
Contact-Richard-de-Wit.jpg
513 ms
homepage-image-left.jpg
512 ms
homepage-image.jpg
596 ms
homepage-image-right.jpg
515 ms
arc-green.png
594 ms
W5F8_SL0XFawnjxHGsZjJA.ttf
53 ms
arc.png
592 ms
3193398744-postmessagerelay.js
38 ms
rpc:shindig_random.js
43 ms
cb=gapi.loaded_0
3 ms
homepage-image-left-footer.png
524 ms
footer-arc.png
523 ms
homepage-image-right-footer.png
523 ms
tweet_button.b9740740e0bcf9b0657c5b11bd4388da.nl.html
57 ms
67 ms
xd_arbiter.php
233 ms
xd_arbiter.php
439 ms
jot
92 ms
scienceplus.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
Form elements do not have associated labels
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
scienceplus.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
Page has valid source maps
scienceplus.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
EN
NL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Scienceplus.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Dutch language. Our system also found out that Scienceplus.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.
scienceplus.nl
Open Graph description is not detected on the main page of Science Plus. 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: