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

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

iwm.rwth-aachen.de

RWTH AACHEN UNIVERSITY Chair and Institute for Materials Applications in Mechanical Engineering - English

Page Load Speed

6.8 sec in total

First Response

773 ms

Resources Loaded

5.9 sec

Page Rendered

211 ms

iwm.rwth-aachen.de screenshot

About Website

Welcome to iwm.rwth-aachen.de homepage info - get ready to check Iwm RWTH AACHEN best content for Germany right away, or after learning these important things about iwm.rwth-aachen.de

RWTH Aachen University - Chair and Institute for Materials Applications in Mechanical Engineering - Homepage

Visit iwm.rwth-aachen.de

Key Findings

We analyzed Iwm.rwth-aachen.de page load time and found that the first response time was 773 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

iwm.rwth-aachen.de performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value150 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.281

43/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

iwm.rwth-aachen.de

773 ms

iwm.rwth-aachen.de

697 ms

195 ms

1013 ms

aw_mobile.asp

113 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that all of those requests were addressed to Iwm.rwth-aachen.de and no external sources were called. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Iwm.rwth-aachen.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.1 kB (11%)

Content Size

870.7 kB

After Optimization

773.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Iwm.rwth-aachen.de main page is 870.7 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. 30% of websites need less resources to load. Images take 516.8 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 18.7 kB

  • Original 24.4 kB
  • After minification 23.0 kB
  • After compression 5.7 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 18.7 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 13.2 kB

  • Original 516.8 kB
  • After minification 503.6 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. Iwm 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 15.5 kB

  • Original 59.4 kB
  • After minification 59.4 kB
  • After compression 43.9 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. Iwm.rwth-aachen.de needs all CSS files to be minified and compressed as it can save up to 15.5 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (59%)

Requests Now

27

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iwm 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

iwm.rwth-aachen.de

iwm.rwth-aachen.de

773 ms

iwm.rwth-aachen.de

iwm.rwth-aachen.de

697 ms

195 ms

1013 ms

aw_mobile.asp

aw_mobile.asp

113 ms

styles.css

styles.css

437 ms

jquery-3.6.0.js

jquery-3.6.0.js

864 ms

jquery.ui-1.13.0.js

jquery.ui-1.13.0.js

1499 ms

__basic-behaviour.js

__basic-behaviour.js

657 ms

__base-modules.js

__base-modules.js

767 ms

__base-modules-2.js

__base-modules-2.js

1022 ms

__rwth.js

__rwth.js

795 ms

customscript.js

customscript.js

768 ms

aw_mobile_jquery.js

aw_mobile_jquery.js

877 ms

show_picture.asp

show_picture.asp

326 ms

icon-sprites.png

icon-sprites.png

562 ms

teaser-wrapper-small-sprite.png

teaser-wrapper-small-sprite.png

113 ms

show_picture.asp

show_picture.asp

1092 ms

show_picture.asp

show_picture.asp

319 ms

show_picture.asp

show_picture.asp

841 ms

show_picture.asp

show_picture.asp

1293 ms

border-50.png

border-50.png

426 ms

dotted-line-persona.png

dotted-line-persona.png

431 ms

line-color-teaser.png

line-color-teaser.png

531 ms

show_picture.asp

show_picture.asp

1165 ms

gps16.png

gps16.png

638 ms

border-25.png

border-25.png

667 ms

icon-sprites-1.png

icon-sprites-1.png

745 ms

tablet.css

tablet.css

109 ms

tablet-portrait.css

tablet-portrait.css

111 ms

print.css

print.css

110 ms

Accessibility Review

iwm.rwth-aachen.de accessibility score

87

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

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

iwm.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

iwm.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 Iwm.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 Iwm.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

iwm.rwth-aachen.de

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