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Leiden.edu Code Review
Summary Score is a calculated score for leiden.edu code structure and quality, including the level of HTML code optimization, CSS and JavaScript compression.
Gzip compression is not enabled
CSS code is minified Consider minifying your HTML code- https://www.universiteitleiden.nl/en -> 5KiB -> 23%
There are files that block page rendering- https://www.universiteitleiden.nl/en/ul2external/styles/screen.css?v=1.86.00
Leverage browser caching for the following URLs:- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-gelegenheidsbanner/444.png -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-headers/header-proefstuderen-voorjaar-2019.jpg/header-proefstuderen-voorjaar-2019.jpg/d1400xvar -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-headers/werving.png -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/onderzoek/wetenschapsdossiers/wereldbol-istock-944453634---aangekocht---bewerkt.jpg/wereldbol-istock-944453634---aangekocht---bewerkt.jpg/d50x50 -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/science/ibl/veldproefveluwe.jpg/veldproefveluwe.jpg/d50x50 -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/singelloop.jpg/singelloop.jpg/d50x50 -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/spotlight-fotos/spotlight-proefstuderen-voorjaar-2019.jpg -> expiration not set
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/spotlight-fotos/wetenschapsdossiers-engels/cancer-spotlight-354x155-en.jpg -> expiration not set
- https://www.universiteitleiden.nl/en/ul2common/images/world-map.png -> expiration not set
- https://www.universiteitleiden.nl/en/ul2common/images/zegel.png -> expiration not set
- https://www.universiteitleiden.nl/scripts/ul2external/main.js -> expiration not set
- https://www.googletagmanager.com/gtm.js?id=GTM-MR67S7X -> 15 minutes
- https://connect.facebook.net/en_US/fbevents.js -> 20 minutes
- https://connect.facebook.net/signals/config/346368129144803?v=2.8.42&r=stable -> 20 minutes
- https://connect.facebook.net/signals/config/406354889733074?v=2.8.42&r=stable -> 20 minutes
- https://www.googleadservices.com/pagead/conversion_async.js -> 60 minutes
- https://www.google-analytics.com/analytics.js -> 2 hours
- https://sjs.bizographics.com/insight.min.js -> 2.7 hours
Speed and usability scores by Google PageSpeed Insights.
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• Speed Score
This is a resulting grade of the analyzed leiden.edu web page structure. Analysis tries to identify slow elements on the page such as uncompressed images and not minified JavaScript code.
• Usability Score
This number is generated on the basis of leiden.edu content analysis. Do all UI elements fit the mobile viewport? Are all links and buttons located not too close to each other? The algorithm tries to answer these questions and give an estimated score.
• For more explanation and detailed report please visit https://developers.google.com/speed/pagespeed/insights/
Gzip is not enabled CSS is minified HTML could be minified- https://www.universiteitleiden.nl/en -> 5KiB -> 23%
Consider compressing these images- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-headers/header-proefstuderen-voorjaar-2019.jpg/header-proefstuderen-voorjaar-2019.jpg/d1400xvar could be reduced in size by 325.7KiB (74%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-gelegenheidsbanner/444.png could be reduced in size by 164.9KiB (95%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/homepage-headers/header-proefstuderen-voorjaar-2019.jpg/header-proefstuderen-voorjaar-2019.jpg/d480xvar could be reduced in size by 45.5KiB (71%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/spotlight-fotos/spotlight-proefstuderen-voorjaar-2019.jpg could be reduced in size by 39.7KiB (69%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/spotlight-fotos/wetenschapsdossiers-engels/public-international-law.jpg could be reduced in size by 13KiB (42%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/singelloop.jpg/singelloop.jpg/d50x50 could be reduced in size by 3KiB (65%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/science/ibl/veldproefveluwe.jpg/veldproefveluwe.jpg/d50x50 could be reduced in size by 2.5KiB (67%)
- https://www.universiteitleiden.nl/binaries/content/gallery/ul2/main-images/general/onderzoek/wetenschapsdossiers/wereldbol-istock-944453634---aangekocht---bewerkt.jpg/wereldbol-istock-944453634---aangekocht---bewerkt.jpg/d50x50 could be reduced in size by 2.4KiB (66%)
There are files that block page rendering- https://www.universiteitleiden.nl/en/ul2external/styles/screen.css?v=1.86.00
Some elements on the page are too close to each other. This may cause confusion while browsing. The size of all elements on the page fits the mobile viewport.
Leiden.edu Main Page Meta
| HTML Tag | Content | Informative? |
|---|---|---|
| Title: | Home - Leiden University | Could be improved |
| Description: | Leiden University, The Netherlands, was founded in 1575 and is one of Europe’s leading international research universities. It has seven faculties in the arts, sciences and social sciences, spread over locations in Leiden and The Hague. The University has over 6,500 staff members and 26,900 students… | |
| H1: | Is it informative enough? | |
| H2: | Find your study programme | Is it informative enough? |
Do you own leiden.edu?
We've noticed that you have issues with some content elements on the main page:
• Title contains 24 characters. We think that you could improve this tag by adding more relevant information or keywords.
• Take a look at the headings; there might be too little information. Headings are important for usability and search engine optimization.
We've noticed that you have issues with some content elements on the main page:
• Title contains 24 characters. We think that you could improve this tag by adding more relevant information or keywords.
• Take a look at the headings; there might be too little information. Headings are important for usability and search engine optimization.
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Server Connection Speed
It took our server 3.15 seconds to reach and load the main page of Leiden.edu. This does not include JavaScript, image and CSS files load timing. This is a good result.
This result is good enough, but there is a room for improvement. If you would like to investigate please refer to the link at the bottom of this page.
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