Tools & Wizards About Us
hhu.de screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

hhu.de

Universität Düsseldorf: HHU

Page Load Speed

3.3 sec in total

First Response

465 ms

Resources Loaded

2.7 sec

Page Rendered

176 ms

hhu.de screenshot

About Website

Welcome to hhu.de homepage info - get ready to check HHU best content for Germany right away, or after learning these important things about hhu.de

Die Heinrich-Heine-Universität Düsseldorf ist eine der jüngeren Hochschulen des Landes NRW – gegründet 1965. Seit 1988 trägt die Universität den Namen des großen Sohnes der Stadt.

Visit hhu.de

Key Findings

We analyzed Hhu.de page load time and found that the first response time was 465 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 50% of websites can load faster. This domain responded with an error, which can significantly jeopardize Hhu.de rating and web reputation

Performance Metrics

hhu.de performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value1,290 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.0 s

26/100

10%

Network Requests Diagram

hhu.de

465 ms

startseite.html

988 ms

stylesheet_b1657822d4.css

463 ms

igx_galerie.css

281 ms

styles.css

615 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Hhu.de, 92% (48 requests) were made to Uni-duesseldorf.de and 4% (2 requests) were made to Piwik.rz.uni-duesseldorf.de. The less responsive or slowest element that took the longest time to load (988 ms) relates to the external source Uni-duesseldorf.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 245.9 kB (40%)

Content Size

616.7 kB

After Optimization

370.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hhu.de main page is 616.7 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. 20% of websites need less resources to load. Images take 295.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 38.6 kB

  • Original 48.8 kB
  • After minification 47.4 kB
  • After compression 10.2 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 38.6 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 6.5 kB

  • Original 295.9 kB
  • After minification 289.4 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. HHU images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 114.9 kB

  • Original 170.9 kB
  • After minification 155.6 kB
  • After compression 56.0 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 114.9 kB or 67% of the original size.

CSS Optimization

-85%

Potential reduce by 86.0 kB

  • Original 101.1 kB
  • After minification 78.3 kB
  • After compression 15.2 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. Hhu.de needs all CSS files to be minified and compressed as it can save up to 86.0 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (69%)

Requests Now

49

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HHU. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hhu.de

hhu.de

465 ms

startseite.html

startseite.html

988 ms

stylesheet_b1657822d4.css

stylesheet_b1657822d4.css

463 ms

igx_galerie.css

igx_galerie.css

281 ms

styles.css

styles.css

615 ms

navigation_7.css

navigation_7.css

281 ms

fce.css

fce.css

315 ms

responsible.css

responsible.css

377 ms

wetterstation.css

wetterstation.css

377 ms

scripts.js

scripts.js

418 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

648 ms

jquery.cookie.js

jquery.cookie.js

477 ms

accordion.js

accordion.js

477 ms

newsslider-new.js

newsslider-new.js

514 ms

toggleelement.js

toggleelement.js

554 ms

toggleslide.js

toggleslide.js

574 ms

terminslider.js

terminslider.js

570 ms

javascript_e343d5ea6c.js

javascript_e343d5ea6c.js

541 ms

mobile_redirect.js

mobile_redirect.js

600 ms

tx_igsocialbookmarks_pi1.css

tx_igsocialbookmarks_pi1.css

561 ms

bannerrotation.css

bannerrotation.css

582 ms

bannerrotation2.js

bannerrotation2.js

583 ms

language_detection.js

language_detection.js

454 ms

uni_duesseldorf_logo.gif

uni_duesseldorf_logo.gif

97 ms

zgnavi_base_7_7.gif

zgnavi_base_7_7.gif

96 ms

a_metanavi.gif

a_metanavi.gif

95 ms

hhu_keyimage_startseite.jpg

hhu_keyimage_startseite.jpg

363 ms

Banner-Exzellenzinitiative_06_Btn.gif

Banner-Exzellenzinitiative_06_Btn.gif

99 ms

Webbanner_HHU_Pano-Rundgang_2015-12.png

Webbanner_HHU_Pano-Rundgang_2015-12.png

194 ms

Banner_Online-Bewerbung_Neu-2016edn4.png

Banner_Online-Bewerbung_Neu-2016edn4.png

369 ms

banner_eXist.gif

banner_eXist.gif

192 ms

banner_pcb.gif

banner_pcb.gif

192 ms

csm_2013-07-08_hhu_IM_0390_d5eb117ec4.jpg

csm_2013-07-08_hhu_IM_0390_d5eb117ec4.jpg

284 ms

csm_AOZ_Au_fenansicht_1_25400aa347.jpg

csm_AOZ_Au_fenansicht_1_25400aa347.jpg

288 ms

english_flag.gif

english_flag.gif

287 ms

suchen-G.gif

suchen-G.gif

97 ms

icon_news.gif

icon_news.gif

290 ms

kalender.gif

kalender.gif

386 ms

link-icon-extern.gif

link-icon-extern.gif

380 ms

FB_FindUsOnFacebook-144.png

FB_FindUsOnFacebook-144.png

384 ms

csm_twitter_ohne_Rahmen_15b4d82f30.jpg

csm_twitter_ohne_Rahmen_15b4d82f30.jpg

385 ms

icon_weitersagen.png

icon_weitersagen.png

455 ms

icon_feed_news.gif

icon_feed_news.gif

461 ms

icon_feed_cal.gif

icon_feed_cal.gif

490 ms

link-icon-mail.gif

link-icon-mail.gif

491 ms

hhu_footer_dot.gif

hhu_footer_dot.gif

490 ms

piwik.js

piwik.js

458 ms

piwik.php

piwik.php

165 ms

ajaxhttpheaders.appspot.com

ajaxhttpheaders.appspot.com

76 ms

print.css

print.css

97 ms

slider_stop_button.gif

slider_stop_button.gif

103 ms

grey_box_close.gif

grey_box_close.gif

99 ms

Accessibility Review

hhu.de accessibility score

93

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-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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

hhu.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

hhu.de SEO score

97

Search Engine Optimization Advices

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

hhu.de

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