Tools & Wizards About Us
rwth.de screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

rwth.de

RWTH AACHEN UNIVERSITY - Rheinisch-Westfaelische Technische Hochschule - English

Page Load Speed

3.1 sec in total

First Response

419 ms

Resources Loaded

2.5 sec

Page Rendered

202 ms

rwth.de screenshot

About Website

Visit rwth.de now to see the best up-to-date RWTH content for Germany and also check out these interesting facts you probably never knew about rwth.de

Die RWTH Aachen ist ein Ort, an dem die Zukunft unserer industrialisierten Welt gedacht wird - Thinking the Future

Visit rwth.de

Key Findings

We analyzed Rwth.de page load time and found that the first response time was 419 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

rwth.de performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value7.0 s

33/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.283

43/100

15%

TTI (Time to Interactive)

Value7.1 s

51/100

10%

Network Requests Diagram

rwth.de

419 ms

www.rwth-aachen.de

518 ms

aw_mobile.asp

198 ms

fqdn.asp

195 ms

styles.css

483 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Rwth.de, 97% (36 requests) were made to Rwth-aachen.de. The less responsive or slowest element that took the longest time to load (768 ms) relates to the external source Rwth-aachen.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 526.4 kB (24%)

Content Size

2.2 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rwth.de main page is 2.2 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. 35% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 64.2 kB

  • Original 78.0 kB
  • After minification 76.4 kB
  • After compression 13.8 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 64.2 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 10.8 kB

  • Original 1.5 MB
  • After minification 1.5 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. RWTH images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 204.9 kB

  • Original 300.3 kB
  • After minification 300.3 kB
  • After compression 95.5 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 204.9 kB or 68% of the original size.

CSS Optimization

-88%

Potential reduce by 246.5 kB

  • Original 280.5 kB
  • After minification 214.1 kB
  • After compression 34.1 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. Rwth.de needs all CSS files to be minified and compressed as it can save up to 246.5 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (34%)

Requests Now

35

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RWTH. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rwth.de

rwth.de

419 ms

www.rwth-aachen.de

www.rwth-aachen.de

518 ms

aw_mobile.asp

aw_mobile.asp

198 ms

fqdn.asp

fqdn.asp

195 ms

styles.css

styles.css

483 ms

__basic-behaviour.js

__basic-behaviour.js

496 ms

__base-modules.js

__base-modules.js

387 ms

__base-modules-2.js

__base-modules-2.js

384 ms

__rwth.js

__rwth.js

481 ms

customscript.asp

customscript.asp

292 ms

aw_mobile_jquery.asp

aw_mobile_jquery.asp

387 ms

show_picture.asp

show_picture.asp

101 ms

icon-sprites.png

icon-sprites.png

289 ms

teaser-wrapper-sprite.png

teaser-wrapper-sprite.png

101 ms

show_picture.asp

show_picture.asp

290 ms

show_picture.asp

show_picture.asp

387 ms

show_picture.asp

show_picture.asp

483 ms

show_picture.asp

show_picture.asp

678 ms

show_picture.asp

show_picture.asp

483 ms

show_picture.asp

show_picture.asp

673 ms

persona.png

persona.png

385 ms

icon-white.png

icon-white.png

481 ms

dotted-line-persona.png

dotted-line-persona.png

482 ms

line-color-teaser.png

line-color-teaser.png

577 ms

show_picture.asp

show_picture.asp

579 ms

show_picture.asp

show_picture.asp

579 ms

border-25.png

border-25.png

578 ms

icon-sprites-1.png

icon-sprites-1.png

673 ms

show_picture.asp

show_picture.asp

673 ms

show_picture.asp

show_picture.asp

675 ms

dotted-line-navigator.png

dotted-line-navigator.png

674 ms

tooltip.gif

tooltip.gif

767 ms

icon-sprites-3.png

icon-sprites-3.png

768 ms

fakultaeten-bg.png

fakultaeten-bg.png

665 ms

tablet.css

tablet.css

98 ms

tablet-portrait.css

tablet-portrait.css

99 ms

print.css

print.css

98 ms

Accessibility Review

rwth.de accessibility score

86

Accessibility Issues

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

rwth.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

rwth.de SEO score

92

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rwth.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 Rwth.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

rwth.de

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