Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

esn-groningen.nl

ESN Groningen | The biggest international student organisation

Page Load Speed

2.9 sec in total

First Response

569 ms

Resources Loaded

2.1 sec

Page Rendered

258 ms

esn-groningen.nl screenshot

About Website

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

ESN Groningen is a student organisation that is part of the Erasmus Student Network (ESN). ESN Groningen is focused on the motto "students helping students"

Visit esn-groningen.nl

Key Findings

We analyzed Esn-groningen.nl page load time and found that the first response time was 569 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

esn-groningen.nl performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value15.5 s

0/100

25%

SI (Speed Index)

Value17.0 s

0/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.591

11/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

esn-groningen.nl

569 ms

A.system.base.css,,qo35wt5+system.messages.css,,qo35wt5+system.theme.css,,qo35wt5,Mcc.PzG5C0PABF.css.pagespeed.cf.XZWGEDFQ_R.css

179 ms

A.modules,,_aggregator,,_aggregator.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_calendar,,_css,,_calendar_multiday.css,,qo35wt5+modules,,_comment,,_comment.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_date,,_date_api,,_date.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_date,,_date_popup,,_themes,,_datepicker.1.7.css,,qo35wt5+modules,,_field,,_theme,,_field.css,,qo35wt5+modules,,_node,,_node.css,,qo35wt5+modules,,_user,,_user.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_views,,_css,,_views.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_colorbox,,_styles,,_default,,_colorbox_style.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_ctools,,_css,,_ctools.css,,qo35wt5+profiles,,_satellite,,_themes,,_esnbase,,_ds_layouts,,_esn_spotlight,,_esn_spotlight.css,,qo35wt5+profiles,,_satellite,,_modules,,_contrib,,_flexslider,,_assets,,_css,,_flexslider_img.css,,qo35wt5,Mcc.-3hMkJkQbW.css.pagespeed.cf.iX2Cpomfua.css

252 ms

A.libraries,,_flexslider,,_flexslider.css,,qo35wt5+modules,,_custom,,_satellite_socialmedia,,_css,,_socialmedia.css,,qo35wt5+libraries,,_superfish,,_css,,_superfish.css,,qo35wt5+themes,,_esnbase,,_css,,_esnbase.css,,qo35wt5+themes,,_esnsatellite,,_css,,_satellite.css,,qo35wt5,Mcc.Oi-YUDH2d5.css.pagespeed.cf.1xHsHzsmIN.css

384 ms

jquery.min.js,qv=1.10.2.pagespeed.jm.ZzSiN_5Whq.js

441 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 72% of them (31 requests) were addressed to the original Esn-groningen.nl, 16% (7 requests) were made to Cdn.embedly.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (779 ms) belongs to the original domain Esn-groningen.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 614.0 kB (47%)

Content Size

1.3 MB

After Optimization

702.2 kB

In fact, the total size of Esn-groningen.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. 50% of websites need less resources to load. Images take 596.4 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 47.2 kB

  • Original 56.9 kB
  • After minification 54.7 kB
  • After compression 9.7 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 47.2 kB or 83% of the original size.

Image Optimization

-13%

Potential reduce by 78.2 kB

  • Original 596.4 kB
  • After minification 518.2 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, ESN Groningen needs image optimization as it can save up to 78.2 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 238.9 kB

  • Original 388.7 kB
  • After minification 387.5 kB
  • After compression 149.8 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 238.9 kB or 61% of the original size.

CSS Optimization

-91%

Potential reduce by 249.7 kB

  • Original 274.3 kB
  • After minification 234.5 kB
  • After compression 24.6 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. Esn-groningen.nl needs all CSS files to be minified and compressed as it can save up to 249.7 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (23%)

Requests Now

40

After Optimization

31

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ESN Groningen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

esn-groningen.nl accessibility score

67

Accessibility Issues

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

High

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

esn-groningen.nl best practices score

92

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

SEO Factors

esn-groningen.nl SEO score

77

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Esn-groningen.nl 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 Esn-groningen.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

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