Tools & Wizards About Us
sebastian-rudolph.de screenshot

Report Summary

  • 73

    Performance

    Renders faster than
    82% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sebastian-rudolph.de

Sebastian Rudolph – International Center for Computational Logic

Page Load Speed

3.3 sec in total

First Response

1.1 sec

Resources Loaded

2 sec

Page Rendered

194 ms

sebastian-rudolph.de screenshot

About Website

Click here to check amazing Sebastian Rudolph content. Otherwise, check out these important facts you probably never knew about sebastian-rudolph.de

Ich bin seit April 2013 Professor für Computational Logic am Institut für Künstliche Intelligenz der Fakultät Informatik der Technischen Universität Dresden, seit 2021 auch Zweitmitglied der Fakultät ...

Visit sebastian-rudolph.de

Key Findings

We analyzed Sebastian-rudolph.de page load time and found that the first response time was 1.1 sec and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

sebastian-rudolph.de performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.031

100/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

Sebastian_Rudolph

1077 ms

load.php

556 ms

load.php

388 ms

css;charset=UTF-8;base64,I2ZpcnN0SGVhZGluZyB7IGRpc3BsYXk6bm9uZTsgfQ==

0 ms

iccl.svg

316 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Sebastian-rudolph.de, 5% (1 request) were made to . The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Iccl.inf.tu-dresden.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 55.1 kB (32%)

Content Size

170.9 kB

After Optimization

115.8 kB

  • HTML
  • Images

In fact, the total size of Sebastian-rudolph.de main page is 170.9 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 96.5 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 46.0 kB

  • Original 74.4 kB
  • After minification 71.4 kB
  • After compression 28.4 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 46.0 kB or 62% of the original size.

Image Optimization

-9%

Potential reduce by 9.1 kB

  • Original 96.5 kB
  • After minification 87.4 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. Sebastian Rudolph images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sebastian Rudolph. According to our analytics all requests are already optimized.

Network Requests Diagram

Sebastian_Rudolph

Sebastian_Rudolph

1077 ms

load.php

load.php

556 ms

load.php

load.php

388 ms

css;charset=UTF-8;base64,I2ZpcnN0SGVhZGluZyB7IGRpc3BsYXk6bm9uZTsgfQ==

css;charset=UTF-8;base64,I2ZpcnN0SGVhZGluZyB7IGRpc3BsYXk6bm9uZTsgfQ==

0 ms

iccl.svg

iccl.svg

316 ms

150px-SR2019-webseite.png

150px-SR2019-webseite.png

557 ms

100px-DeciGUT-logo-final.png

100px-DeciGUT-logo-final.png

120 ms

100px-KIMEDS.jpg

100px-KIMEDS.jpg

136 ms

100px-Quantla-logo-png.png

100px-Quantla-logo-png.png

185 ms

page1-100px-SECAI-SQUARE-SHORT.pdf.jpg

page1-100px-SECAI-SQUARE-SHORT.pdf.jpg

212 ms

100px-Scads-logo.png

100px-Scads-logo.png

228 ms

100px-Wolpert-github.png

100px-Wolpert-github.png

346 ms

poweredby_mediawiki_88x31.png

poweredby_mediawiki_88x31.png

345 ms

load.php

load.php

373 ms

open-sans-v15-latin-ext_latin-regular.woff

open-sans-v15-latin-ext_latin-regular.woff

117 ms

open-sans-v15-latin-ext_latin-300.woff

open-sans-v15-latin-ext_latin-300.woff

116 ms

open-sans-v15-latin-ext_latin-700.woff

open-sans-v15-latin-ext_latin-700.woff

220 ms

fa-solid-900.woff

fa-solid-900.woff

224 ms

fa-regular-400.woff

fa-regular-400.woff

117 ms

open-sans-v15-latin-ext_latin-italic.woff

open-sans-v15-latin-ext_latin-italic.woff

209 ms

Accessibility Review

sebastian-rudolph.de accessibility score

94

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

Best Practices

sebastian-rudolph.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

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

sebastian-rudolph.de SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a valid hreflang

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

    EN

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

sebastian-rudolph.de

Open Graph data is detected on the main page of Sebastian Rudolph. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: