Tools & Wizards About Us
isl.rwth-aachen.de screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

isl.rwth-aachen.de

RWTH AACHEN UNIVERSITY Chair of Urban Design and Institute for Urban Design and European Urbanism - English

Page Load Speed

9.2 sec in total

First Response

758 ms

Resources Loaded

8.2 sec

Page Rendered

314 ms

isl.rwth-aachen.de screenshot

About Website

Click here to check amazing Isl RWTH AACHEN content for Germany. Otherwise, check out these important facts you probably never knew about isl.rwth-aachen.de

RWTH Aachen University - Chair of Urban Design and Institute for Urban Design and European Urbanism - Homepage

Visit isl.rwth-aachen.de

Key Findings

We analyzed Isl.rwth-aachen.de page load time and found that the first response time was 758 ms and then it took 8.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

isl.rwth-aachen.de performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value6.1 s

44/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.9 s

66/100

10%

Network Requests Diagram

isl.rwth-aachen.de

758 ms

1282 ms

535 ms

aw_mobile.asp

294 ms

styles.css

635 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Isl.rwth-aachen.de, 98% (42 requests) were made to Staedtebau.rwth-aachen.de. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Staedtebau.rwth-aachen.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 383.2 kB (9%)

Content Size

4.0 MB

After Optimization

3.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isl.rwth-aachen.de main page is 4.0 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. 40% of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 31.6 kB

  • Original 39.5 kB
  • After minification 38.1 kB
  • After compression 7.9 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 31.6 kB or 80% of the original size.

Image Optimization

-8%

Potential reduce by 297.6 kB

  • Original 3.7 MB
  • After minification 3.4 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. Isl RWTH AACHEN images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 49.6 kB

  • Original 270.1 kB
  • After minification 269.5 kB
  • After compression 220.4 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 49.6 kB or 18% of the original size.

CSS Optimization

-26%

Potential reduce by 4.4 kB

  • Original 16.7 kB
  • After minification 16.7 kB
  • After compression 12.3 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. Isl.rwth-aachen.de needs all CSS files to be minified and compressed as it can save up to 4.4 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (40%)

Requests Now

40

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isl RWTH AACHEN. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

isl.rwth-aachen.de

isl.rwth-aachen.de

758 ms

1282 ms

535 ms

aw_mobile.asp

aw_mobile.asp

294 ms

styles.css

styles.css

635 ms

jquery-3.6.0.js

jquery-3.6.0.js

1388 ms

jquery.ui-1.13.0.js

jquery.ui-1.13.0.js

1692 ms

__basic-behaviour.js

__basic-behaviour.js

764 ms

__base-modules.js

__base-modules.js

852 ms

__base-modules-2.js

__base-modules-2.js

1086 ms

__rwth.js

__rwth.js

751 ms

customscript.js

customscript.js

868 ms

aw_mobile_jquery.js

aw_mobile_jquery.js

890 ms

show_picture.asp

show_picture.asp

349 ms

icon-sprites.png

icon-sprites.png

530 ms

teaser-wrapper-small-sprite.png

teaser-wrapper-small-sprite.png

114 ms

show_picture.asp

show_picture.asp

320 ms

show_picture.asp

show_picture.asp

2369 ms

show_picture.asp

show_picture.asp

1769 ms

show_picture.asp

show_picture.asp

3438 ms

show_picture.asp

show_picture.asp

1569 ms

show_picture.asp

show_picture.asp

1017 ms

show_picture.asp

show_picture.asp

1739 ms

show_picture.asp

show_picture.asp

2240 ms

border-50.png

border-50.png

1678 ms

dotted-line-persona.png

dotted-line-persona.png

1784 ms

line-color-teaser.png

line-color-teaser.png

1846 ms

show_picture.asp

show_picture.asp

2005 ms

show_picture.asp

show_picture.asp

1999 ms

show_picture.asp

show_picture.asp

2378 ms

gps16.png

gps16.png

2109 ms

show_picture.asp

show_picture.asp

2228 ms

show_picture.asp

show_picture.asp

2232 ms

show_picture.asp

show_picture.asp

2563 ms

show_picture.asp

show_picture.asp

2449 ms

show_picture.asp

show_picture.asp

2396 ms

show_picture.asp

show_picture.asp

2514 ms

show_picture.asp

show_picture.asp

2735 ms

border-25.png

border-25.png

2506 ms

icon-sprites-1.png

icon-sprites-1.png

2606 ms

tablet.css

tablet.css

224 ms

tablet-portrait.css

tablet-portrait.css

227 ms

print.css

print.css

116 ms

Accessibility Review

isl.rwth-aachen.de accessibility score

84

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

isl.rwth-aachen.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

SEO Factors

isl.rwth-aachen.de SEO score

100

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

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 Isl.rwth-aachen.de 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 Isl.rwth-aachen.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

isl.rwth-aachen.de

Open Graph description is not detected on the main page of Isl RWTH AACHEN. 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: