Tools & Wizards About Us
tobiaslenz.de screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    87% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

tobiaslenz.de

Prof. Dr. Tobias Lenz, Evolutionary Immunogenomics, University of Hamburg

Page Load Speed

2.4 sec in total

First Response

488 ms

Resources Loaded

1.7 sec

Page Rendered

147 ms

tobiaslenz.de screenshot

About Website

Welcome to tobiaslenz.de homepage info - get ready to check Tobias Lenz best content right away, or after learning these important things about tobiaslenz.de

Prof. Dr. Tobias Lenz, Professor for Evolutionary Immunogenomics at the University of Hamburg

Visit tobiaslenz.de

Key Findings

We analyzed Tobiaslenz.de page load time and found that the first response time was 488 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

tobiaslenz.de performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value4.0 s

87/100

10%

Network Requests Diagram

tobiaslenz.de

488 ms

style.css

189 ms

7.js

344 ms

head_left.gif

286 ms

MHCbinding.jpg

768 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 67% of them (22 requests) were addressed to the original Tobiaslenz.de, 21% (7 requests) were made to Rf.revolvermaps.com and 12% (4 requests) were made to Labs.researcherid.com. The less responsive or slowest element that took the longest time to load (888 ms) belongs to the original domain Tobiaslenz.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 132.2 kB (30%)

Content Size

435.3 kB

After Optimization

303.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tobiaslenz.de main page is 435.3 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. Only 10% of websites need less resources to load. Images take 251.1 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 5.6 kB

  • Original 7.9 kB
  • After minification 7.9 kB
  • After compression 2.3 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 5.6 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 6 B

  • Original 251.1 kB
  • After minification 251.1 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. Tobias Lenz images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 121.7 kB

  • Original 169.9 kB
  • After minification 167.9 kB
  • After compression 48.2 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 121.7 kB or 72% of the original size.

CSS Optimization

-78%

Potential reduce by 4.9 kB

  • Original 6.3 kB
  • After minification 4.7 kB
  • After compression 1.4 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. Tobiaslenz.de needs all CSS files to be minified and compressed as it can save up to 4.9 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (50%)

Requests Now

32

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tobias Lenz. 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 as a result speed up the page load time.

Network Requests Diagram

tobiaslenz.de

tobiaslenz.de

488 ms

style.css

style.css

189 ms

7.js

7.js

344 ms

head_left.gif

head_left.gif

286 ms

MHCbinding.jpg

MHCbinding.jpg

768 ms

head_right.gif

head_right.gif

301 ms

navi_top.gif

navi_top.gif

203 ms

link_icon2.gif

link_icon2.gif

212 ms

email2.gif

email2.gif

283 ms

TobiasLenz.jpg

TobiasLenz.jpg

404 ms

counting.php.cgi

counting.php.cgi

888 ms

link6.gif

link6.gif

134 ms

link3.gif

link3.gif

193 ms

link4.gif

link4.gif

193 ms

link1.gif

link1.gif

214 ms

link2.gif

link2.gif

240 ms

navi_bottom.gif

navi_bottom.gif

290 ms

spacer1.gif

spacer1.gif

287 ms

33 ms

c.php

c.php

108 ms

r.php

r.php

199 ms

a2.php

a2.php

112 ms

t.php

t.php

109 ms

c.php

c.php

113 ms

256

256

99 ms

link1on.gif

link1on.gif

101 ms

mashlet-loader.js

mashlet-loader.js

31 ms

link2on.gif

link2on.gif

109 ms

link3on.gif

link3on.gif

101 ms

link4on.gif

link4on.gif

97 ms

link5on.gif

link5on.gif

105 ms

mashlet.css

mashlet.css

30 ms

mashlet-core.js

mashlet-core.js

118 ms

Accessibility Review

tobiaslenz.de accessibility score

61

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

tobiaslenz.de best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

tobiaslenz.de SEO score

67

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tobiaslenz.de can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Tobiaslenz.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

tobiaslenz.de

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