Surfnet.nl Site Title

SURF is de ict-coöperatie van onderwijs en onderzoek | SURF.nl

Surfnet.nl Meta Description

Meer dan 100 onderwijs- en onderzoeksinstellingen in Nederland werken in de coöperatie SURF samen om de kansen van digitalisering ten volle benutten. Met als doel: beter en flexibeler onderwijs en onderzoek.

Surfnet.nl Test Results

surfnet.nl Mobile Usability: 100/100


surfnet.nl Mobile Speed: 55/100

Quick overview:
Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://surfnet.nl/
...
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://webstats.surf.nl/piwik.js (expiration not specified)
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.surf.nl/js/lib/jquery.js
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 52.5KiB (69% reduction).
Compressing https://www.surf.nl/binaries/vrijcomponent/content/gallery/surf/kennisbank/bp_gastgebruik_vumc_en_oclc.jpg could save 50.6KiB (69% reduction).
...
Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 43.9KiB (66% reduction).
Compressing https://webstats.surf.nl/piwik.js could save 43.1KiB (66% reduction).
...
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 4.4KiB (13% reduction).
Minifying https://www.surf.nl/css/all.css could save 4KiB (12% reduction) after compression.
...
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 3.9KiB (25% reduction).
Minifying https://www.surf.nl/js/main_1_06_03.js could save 1.1KiB (24% reduction) after compression.
...
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.2KiB (20% reduction).
Minifying https://www.surf.nl/over-surf/werkmaatschappijen/surfnet could save 1.2KiB (20% reduction) after compression.

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