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surf.nl screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

surf.nl

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

Page Load Speed

3.8 sec in total

First Response

576 ms

Resources Loaded

2.9 sec

Page Rendered

278 ms

surf.nl screenshot

About Website

Welcome to surf.nl homepage info - get ready to check SURF best content for Netherlands right away, or after learning these important things about surf.nl

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 ond...

Visit surf.nl

Key Findings

We analyzed Surf.nl page load time and found that the first response time was 576 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

surf.nl performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value550 ms

54/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

www.surf.nl

576 ms

all.css

228 ms

modernizr.js

316 ms

enquire.min.js

314 ms

jquery.js

415 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 96% of them (51 requests) were addressed to the original Surf.nl, 2% (1 request) were made to Maps.googleapis.com and 2% (1 request) were made to Webstats.surf.nl. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Surf.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 76.3 kB (74%)

Content Size

103.7 kB

After Optimization

27.4 kB

  • HTML
  • JavaScript

In fact, the total size of Surf.nl main page is 103.7 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. 25% of websites need less resources to load. Javascripts take 54.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 40.6 kB

  • Original 48.8 kB
  • After minification 42.8 kB
  • After compression 8.3 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 6.1 kB, which is 12% 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 40.6 kB or 83% of the original size.

JavaScript Optimization

-65%

Potential reduce by 35.7 kB

  • Original 54.9 kB
  • After minification 54.9 kB
  • After compression 19.1 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 35.7 kB or 65% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (77%)

Requests Now

52

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SURF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.surf.nl

www.surf.nl

576 ms

all.css

all.css

228 ms

modernizr.js

modernizr.js

316 ms

enquire.min.js

enquire.min.js

314 ms

jquery.js

jquery.js

415 ms

jquery-ui.js

jquery-ui.js

431 ms

jquery.cookie.js

jquery.cookie.js

389 ms

lodash.js

lodash.js

450 ms

backbone.js

backbone.js

448 ms

transit.js

transit.js

462 ms

js

js

71 ms

placeholder.js

placeholder.js

495 ms

dropmenuitem.js

dropmenuitem.js

551 ms

submitonselect.js

submitonselect.js

553 ms

equalheight.js

equalheight.js

582 ms

searchnavigation.js

searchnavigation.js

583 ms

searchautocomplete.js

searchautocomplete.js

582 ms

disablerightclick.js

disablerightclick.js

629 ms

socialmedia.js

socialmedia.js

688 ms

focusoutline.js

focusoutline.js

692 ms

jumpto.js

jumpto.js

717 ms

sessionaccordion.js

sessionaccordion.js

716 ms

title-carousel.js

title-carousel.js

715 ms

googlemapcanvas.js

googlemapcanvas.js

762 ms

facetnavigation.js

facetnavigation.js

826 ms

datepicker.js

datepicker.js

828 ms

jsmailrender.js

jsmailrender.js

849 ms

jquery.ui.datepicker-nl.js

jquery.ui.datepicker-nl.js

851 ms

main_1_06_00.js

main_1_06_00.js

850 ms

piwik-optout.js

piwik-optout.js

896 ms

surflogo.png

surflogo.png

633 ms

separator-01.png

separator-01.png

635 ms

ico-login.png

ico-login.png

652 ms

bg-drop-01.png

bg-drop-01.png

653 ms

bullet-01.png

bullet-01.png

652 ms

none.png

none.png

698 ms

bg-drop-02.png

bg-drop-02.png

771 ms

homepage-achtergrond-verloop-kort-web.jpg

homepage-achtergrond-verloop-kort-web.jpg

956 ms

sprite-arrows.png

sprite-arrows.png

786 ms

surf-nieuw.png

surf-nieuw.png

785 ms

surfnet-nieuw.png

surfnet-nieuw.png

744 ms

mark_simonson_-_proxima_nova_soft_bold-webfont-two.svg

mark_simonson_-_proxima_nova_soft_bold-webfont-two.svg

1049 ms

icomoon.ttf

icomoon.ttf

822 ms

varelaround-regular-webfont-two.svg

varelaround-regular-webfont-two.svg

1263 ms

icomoon.ttf

icomoon.ttf

829 ms

surfmarket-nieuw.png

surfmarket-nieuw.png

806 ms

surfsara-nieuw.png

surfsara-nieuw.png

913 ms

separator-02.png

separator-02.png

902 ms

separator-04.png

separator-04.png

850 ms

separator-06.png

separator-06.png

880 ms

piwik.js

piwik.js

643 ms

menu.json

menu.json

602 ms

ico-search.png

ico-search.png

598 ms

Accessibility Review

surf.nl accessibility score

90

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Best Practices

surf.nl best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

surf.nl SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Surf.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Surf.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.

Social Sharing Optimization

surf.nl

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