Tools & Wizards About Us
zwisler.de screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

zwisler.de

Homepage of Dr. Rainer Zwisler, Psychologist in Regensburg, Germany

Page Load Speed

1 sec in total

First Response

345 ms

Resources Loaded

556 ms

Page Rendered

104 ms

zwisler.de screenshot

About Website

Visit zwisler.de now to see the best up-to-date Zwisler content and also check out these interesting facts you probably never knew about zwisler.de

Homepage of Dr. Rainer Zwisler, Psychologist in Regensburg, Germany. This page contains several collections of links to scientific topics as well as some online-documents (in german)

Visit zwisler.de

Key Findings

We analyzed Zwisler.de page load time and found that the first response time was 345 ms and then it took 660 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

zwisler.de performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.8 s

100/100

25%

SI (Speed Index)

Value0.9 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.6 s

100/100

10%

Network Requests Diagram

zwisler.de

345 ms

wallp.jpg

108 ms

rz.jpg

206 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Zwisler.de and no external sources were called. The less responsive or slowest element that took the longest time to load (345 ms) belongs to the original domain Zwisler.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.5 kB (23%)

Content Size

10.7 kB

After Optimization

8.2 kB

  • HTML
  • Images

In fact, the total size of Zwisler.de main page is 10.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 8.1 kB which makes up the majority of the site volume.

HTML Optimization

-54%

Potential reduce by 1.4 kB

  • Original 2.6 kB
  • After minification 2.5 kB
  • After compression 1.2 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 1.4 kB or 54% of the original size.

Image Optimization

-14%

Potential reduce by 1.1 kB

  • Original 8.1 kB
  • After minification 7.0 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, Zwisler needs image optimization as it can save up to 1.1 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

  • Images

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zwisler. According to our analytics all requests are already optimized.

Network Requests Diagram

zwisler.de

zwisler.de

345 ms

wallp.jpg

wallp.jpg

108 ms

rz.jpg

rz.jpg

206 ms

Accessibility Review

zwisler.de accessibility score

82

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

Form elements do not have associated labels

Best Practices

zwisler.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

zwisler.de SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zwisler.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 Zwisler.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

zwisler.de

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