Tools & Wizards About Us
abri.vu.nl screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

abri.vu.nl

Amsterdam Business Research Institute - Vrije Universiteit Amsterdam

Page Load Speed

3.1 sec in total

First Response

259 ms

Resources Loaded

2 sec

Page Rendered

844 ms

abri.vu.nl screenshot

About Website

Click here to check amazing Abri Vu content for Netherlands. Otherwise, check out these important facts you probably never knew about abri.vu.nl

The Amsterdam Business Research Institute (ABRI) is centrally located in the business and financial district of Amsterdam.

Visit abri.vu.nl

Key Findings

We analyzed Abri.vu.nl page load time and found that the first response time was 259 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

abri.vu.nl performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value19.6 s

2/100

10%

Network Requests Diagram

abri.vu.nl

259 ms

amsterdam-business-research-institute-abri

512 ms

site.min.css

481 ms

VU-logo-nobg.svg

195 ms

research%20projects%20leadership_hero_unsplash_leon-Oalh2MojU.jpg

546 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Abri.vu.nl, 67% (24 requests) were made to Vu.nl and 31% (11 requests) were made to Assets.vu.nl. The less responsive or slowest element that took the longest time to load (899 ms) relates to the external source Assets.vu.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 73.4 kB (4%)

Content Size

2.0 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Abri.vu.nl main page is 2.0 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. 70% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 65.2 kB

  • Original 77.3 kB
  • After minification 61.0 kB
  • After compression 12.1 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 16.3 kB, which is 21% 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 65.2 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 8.0 kB

  • Original 2.0 MB
  • After minification 2.0 MB

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. Abri Vu images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 156 B

  • Original 438 B
  • After minification 438 B
  • After compression 282 B

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 156 B or 36% of the original size.

CSS Optimization

-40%

Potential reduce by 59 B

  • Original 146 B
  • After minification 132 B
  • After compression 87 B

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. Abri.vu.nl needs all CSS files to be minified and compressed as it can save up to 59 B or 40% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

18

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Abri Vu. According to our analytics all requests are already optimized.

Network Requests Diagram

abri.vu.nl

abri.vu.nl

259 ms

amsterdam-business-research-institute-abri

amsterdam-business-research-institute-abri

512 ms

site.min.css

site.min.css

481 ms

VU-logo-nobg.svg

VU-logo-nobg.svg

195 ms

research%20projects%20leadership_hero_unsplash_leon-Oalh2MojU.jpg

research%20projects%20leadership_hero_unsplash_leon-Oalh2MojU.jpg

546 ms

Business%20Analytics%20%26%20Data%20Science%202024.jpg

Business%20Analytics%20%26%20Data%20Science%202024.jpg

667 ms

KIN%20Summer%20School.jpg

KIN%20Summer%20School.jpg

672 ms

VU%20visit%20Amsterdam.png

VU%20visit%20Amsterdam.png

899 ms

Bomi%202.jpg

Bomi%202.jpg

545 ms

Kathrin%20Borner%20Defence.jpg

Kathrin%20Borner%20Defence.jpg

545 ms

site.min.js

site.min.js

724 ms

widgets.js

widgets.js

521 ms

vendors.min.js

vendors.min.js

795 ms

Philipp%20Tuertscher.png

Philipp%20Tuertscher.png

661 ms

Maria%20Tims.png

Maria%20Tims.png

676 ms

sbe_abri_hero_2200x720.jpg

sbe_abri_hero_2200x720.jpg

318 ms

Abri%20logo.png

Abri%20logo.png

303 ms

Promotie_walking_new.jpg

Promotie_walking_new.jpg

308 ms

VU_placeholder_avatar_nobg.svg

VU_placeholder_avatar_nobg.svg

98 ms

VU_icon_person-01.svg

VU_icon_person-01.svg

96 ms

roboto-all-400-normal.woff

roboto-all-400-normal.woff

85 ms

roboto-all-500-normal.woff

roboto-all-500-normal.woff

244 ms

roboto-all-300-normal.woff

roboto-all-300-normal.woff

137 ms

roboto-all-100-normal.woff

roboto-all-100-normal.woff

171 ms

roboto-all-700-normal.woff

roboto-all-700-normal.woff

226 ms

roboto-all-900-normal.woff

roboto-all-900-normal.woff

404 ms

fa-light-300.ttf

fa-light-300.ttf

353 ms

fa-regular-400.ttf

fa-regular-400.ttf

474 ms

fa-solid-900.ttf

fa-solid-900.ttf

730 ms

roboto-all-400-italic.woff

roboto-all-400-italic.woff

351 ms

roboto-all-500-italic.woff

roboto-all-500-italic.woff

378 ms

roboto-all-300-italic.woff

roboto-all-300-italic.woff

423 ms

roboto-all-100-italic.woff

roboto-all-100-italic.woff

436 ms

roboto-all-700-italic.woff

roboto-all-700-italic.woff

456 ms

roboto-all-900-italic.woff

roboto-all-900-italic.woff

566 ms

fa-brands-400.ttf

fa-brands-400.ttf

508 ms

Accessibility Review

abri.vu.nl accessibility score

81

Accessibility Issues

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-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

Best Practices

abri.vu.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

High

Missing source maps for large first-party JavaScript

SEO Factors

abri.vu.nl SEO score

84

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Abri.vu.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 Abri.vu.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

abri.vu.nl

Open Graph data is detected on the main page of Abri Vu. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: