Tools & Wizards About Us
christianholz.net screenshot

Report Summary

  • 83

    Performance

    Renders faster than
    87% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 94

    SEO

    Google-friendlier than
    90% of websites

christianholz.net

christian holz | mixed reality & mobile health

Page Load Speed

1.1 sec in total

First Response

47 ms

Resources Loaded

915 ms

Page Rendered

140 ms

christianholz.net screenshot

About Website

Click here to check amazing Christian Holz content. Otherwise, check out these important facts you probably never knew about christianholz.net

Christian Holz is an assistant professor at ETH Zurich, leading the Sensing, Interaction & Perception Lab in the Computer Science department.

Visit christianholz.net

Key Findings

We analyzed Christianholz.net page load time and found that the first response time was 47 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

christianholz.net performance score

83

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.2 s

94/100

10%

Network Requests Diagram

christianholz.net

47 ms

christianholz.net

74 ms

www.christianholz.net

43 ms

www.christianholz.net

626 ms

dc.js

19 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 86% of them (12 requests) were addressed to the original Christianholz.net, 14% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (626 ms) belongs to the original domain Christianholz.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 7.0 kB (5%)

Content Size

142.3 kB

After Optimization

135.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Christianholz.net main page is 142.3 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 111.9 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 5.7 kB

  • Original 8.2 kB
  • After minification 6.9 kB
  • After compression 2.5 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. This page needs HTML code to be minified as it can gain 1.3 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 5.7 kB or 69% of the original size.

Image Optimization

-0%

Potential reduce by 46 B

  • Original 111.9 kB
  • After minification 111.9 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. Christian Holz images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 365 B

  • Original 18.2 kB
  • After minification 18.2 kB
  • After compression 17.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-23%

Potential reduce by 910 B

  • Original 4.0 kB
  • After minification 4.0 kB
  • After compression 3.0 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. Christianholz.net needs all CSS files to be minified and compressed as it can save up to 910 B or 23% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

10

After Optimization

10

  • Images
  • JavaScript
  • CSS

The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Christian Holz. According to our analytics all requests are already optimized.

Network Requests Diagram

christianholz.net

christianholz.net

47 ms

christianholz.net

christianholz.net

74 ms

www.christianholz.net

www.christianholz.net

43 ms

www.christianholz.net

www.christianholz.net

626 ms

dc.js

dc.js

19 ms

style.css

style.css

42 ms

scripts.js

scripts.js

44 ms

christianholz.jpg

christianholz.jpg

79 ms

__utm.gif

__utm.gif

15 ms

background-top.jpg

background-top.jpg

52 ms

background-bottom.jpg

background-bottom.jpg

36 ms

vstretch-top.jpg

vstretch-top.jpg

52 ms

vstretch-bottom.jpg

vstretch-bottom.jpg

56 ms

style-print.css

style-print.css

19 ms

Accessibility Review

christianholz.net accessibility score

82

Accessibility Issues

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

christianholz.net best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

christianholz.net SEO score

94

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

High

Tap targets are not sized appropriately

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 Christianholz.net 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 Christianholz.net 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

christianholz.net

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