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

Report Summary

  • 73

    Performance

    Renders faster than
    83% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

ind.rwth-aachen.de

IKS: Institut für Kommunikationssysteme

Page Load Speed

3.2 sec in total

First Response

391 ms

Resources Loaded

2.6 sec

Page Rendered

205 ms

ind.rwth-aachen.de screenshot

About Website

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

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Key Findings

We analyzed Ind.rwth-aachen.de page load time and found that the first response time was 391 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.

Performance Metrics

ind.rwth-aachen.de performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value6.0 s

47/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

Network Requests Diagram

ind.rwth-aachen.de

391 ms

418 ms

stylesheet_5ee5092657.css

193 ms

basicstyles.css

198 ms

columns.css

199 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 Ind.rwth-aachen.de, 97% (35 requests) were made to Iks.rwth-aachen.de. The less responsive or slowest element that took the longest time to load (990 ms) relates to the external source Iks.rwth-aachen.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 146.8 kB (24%)

Content Size

602.6 kB

After Optimization

455.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ind.rwth-aachen.de main page is 602.6 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 540.6 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 12.5 kB

  • Original 16.5 kB
  • After minification 15.6 kB
  • After compression 4.1 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. 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 12.5 kB or 75% of the original size.

Image Optimization

-18%

Potential reduce by 96.1 kB

  • Original 540.6 kB
  • After minification 444.4 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. Obviously, Ind Rwth Aachen needs image optimization as it can save up to 96.1 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-54%

Potential reduce by 243 B

  • Original 446 B
  • After minification 356 B
  • After compression 203 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 243 B or 54% of the original size.

CSS Optimization

-84%

Potential reduce by 38.0 kB

  • Original 45.0 kB
  • After minification 27.9 kB
  • After compression 7.1 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. Ind.rwth-aachen.de needs all CSS files to be minified and compressed as it can save up to 38.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (32%)

Requests Now

34

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ind 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 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ind.rwth-aachen.de

ind.rwth-aachen.de

391 ms

418 ms

stylesheet_5ee5092657.css

stylesheet_5ee5092657.css

193 ms

basicstyles.css

basicstyles.css

198 ms

columns.css

columns.css

199 ms

head.css

head.css

201 ms

navigation.css

navigation.css

203 ms

content.css

content.css

205 ms

plugin_indexedsearch.css

plugin_indexedsearch.css

289 ms

plugin_news.css

plugin_news.css

292 ms

plugin_publications.css

plugin_publications.css

294 ms

plugin_stafflisting.css

plugin_stafflisting.css

294 ms

plugin_studentworks.css

plugin_studentworks.css

297 ms

javascript_757c080409.js

javascript_757c080409.js

296 ms

pagebodybg.png

pagebodybg.png

389 ms

pagetopbg.png

pagetopbg.png

497 ms

pagehead-en.jpg

pagehead-en.jpg

769 ms

19dc285b4e.gif

19dc285b4e.gif

99 ms

31973baedf.gif

31973baedf.gif

98 ms

linkphone.png

linkphone.png

99 ms

linkmailto.png

linkmailto.png

196 ms

6e2e697ace.jpg

6e2e697ace.jpg

585 ms

68db1de7f0.jpg

68db1de7f0.jpg

486 ms

49ba5b4f55.jpg

49ba5b4f55.jpg

680 ms

1ddc3236dd.jpg

1ddc3236dd.jpg

581 ms

bca755598e.jpg

bca755598e.jpg

680 ms

a162f7f3ed.jpg

a162f7f3ed.jpg

693 ms

masterce_04.png

masterce_04.png

679 ms

colloquium_02.png

colloquium_02.png

682 ms

IWAENC2012-Logo_01.gif

IWAENC2012-Logo_01.gif

775 ms

Covr-Logo.gif

Covr-Logo.gif

776 ms

umic_04.png

umic_04.png

777 ms

flexcode_04.png

flexcode_04.png

777 ms

PartlyCloudy.png

PartlyCloudy.png

990 ms

Cloudy.png

Cloudy.png

963 ms

print.css

print.css

99 ms

Accessibility Review

ind.rwth-aachen.de accessibility score

66

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

Links do not have a discernible name

Best Practices

ind.rwth-aachen.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

ind.rwth-aachen.de SEO score

80

Search Engine Optimization Advices

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

    DE

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ind.rwth-aachen.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it does not match the claimed English language. Our system also found out that Ind.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

ind.rwth-aachen.de

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