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education.leiden.edu: Education - Leiden University

When you choose Leiden University, you are choosing to broaden your personal and academic horizons. You will find in our two cities – Leiden and The Hague - an inspiring community of students and staf...

Page load speed analysis

  • 60/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    423 ms

  • Resources loaded

    2 sec

  • Page rendered

    120 ms

  • Total page load time

    2.5 sec

Click here to check amazing Education Leiden content for Netherlands. Otherwise, check out these important facts you probably never knew about education.leiden.edu

We analyzed Education.leiden.edu page load time and found that the first response time was 423 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Page optimization

  • HTML 9.9 kB
    Images 67.7 kB
    Javascripts 43.1 kB
    CSS 29.9 kB

    In fact, the total size of Education.leiden.edu main page is 150.6 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. 15% of websites need less resources to load. Images take 67.7 kB which makes up the majority of the site volume.

    • Original 9.9 kB
    • After minification 8.4 kB
    • After compression 2.7 kB

    HTML optimization

    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 1.5 kB, which is 15% 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 7.1 kB or 72% of the original size.

    • Original 67.7 kB
    • After optimization 62.5 kB

    Image optimization

    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. Education Leiden images are well optimized though.

    • Original 43.1 kB
    • After minification 43.1 kB
    • After compression 16.0 kB

    JavaScript optimization

    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 27.1 kB or 63% of the original size.

    • Original 29.9 kB
    • After minification 24.8 kB
    • After compression 6.1 kB

    CSS optimization

    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. Education.leiden.edu needs all CSS files to be minified and compressed as it can save up to 23.9 kB or 80% of the original size.

Network requests diagram

  • education.leiden.edu
  • nbl.min.js
  • main.css
  • jquery-1.8.3.min.js
  • rendition.js
  • ga.js
  • ul_logo.png
  • bnbig_default.jpg
  • ul_logo_print.png
  • file_rss.png
  • crumb_chevron.png
  • bkg_main.png
  • bkg_btn.png
  • bkg_middle.png
  • arrow_right.png
  • arrow_midsec.png
  • arrow_left.png
  • arrow_sidebar.png
  • crumb_overlay.png
  • plugins.js
  • 4
  • print.css
  • __utm.gif
  • __utm.gif
  • 4

Our browser made a total of 25 requests to load all elements on the main page. We found that 16% of them (4 requests) were addressed to the original Education.leiden.edu, 60% (15 requests) were made to Live.leiden.edu and 12% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (590 ms) relates to the external source Media.leidenuniv.nl.

Additional info on education.leiden.edu

Requests

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Education Leiden. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

1

Javascripts

17

Images

2

CSS

20

All

Possible request optimization

1

Javascripts

6

Images

2

CSS

11

Optimized

9

All

Good result

IP address

Education.leiden.edu uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

education.leiden.edu

mastersinleiden.nl

studereninleiden.nl

leiden.edu

plexus.leidenuniv.nl

132.229.92.81

DNS records

Type Host Target/ip TTL Other
A

rewriteservice.universiteitleiden.nl

132.229.92.81 299
CNAME

education.leiden.edu

rewriteservice.universiteitleiden.nl 300

Language and encoding

Good result

Language

EN en language flag

Detected

EN en language flag

Claimed

Encoding

UTF-8

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Education.leiden.edu 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 Education.leiden.edu 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.

HTTPS certificate

SSL Certificate

Education.leiden.edu has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 40.8% of all visits is Netherlands. It’s good for Education.leiden.edu that their server is also located in Netherlands, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Education 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:

education.leiden.edu

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