Tools & Wizards About Us
rschr.de screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

rschr.de

Dr. Rolf Schröder, Astronomie - Anfang der Erkenntnis

Page Load Speed

1.3 sec in total

First Response

292 ms

Resources Loaded

733 ms

Page Rendered

236 ms

rschr.de screenshot

About Website

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

Dr. Rolf Schröder, Traktate über astronomische, physikalische und numerische Themen und Verfahren, Aufklärung und Religiotie, Humanismus, persönliche Diaschau, Diaschauen.

Visit rschr.de

Key Findings

We analyzed Rschr.de page load time and found that the first response time was 292 ms and then it took 969 ms 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

rschr.de performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.0 s

100/100

25%

SI (Speed Index)

Value1.3 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)

Value1.0 s

100/100

10%

Network Requests Diagram

rschr.de

292 ms

index.css

108 ms

backg.css

202 ms

RS1Lib.js

205 ms

Homeback.jpg

123 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that all of those requests were addressed to Rschr.de and no external sources were called. The less responsive or slowest element that took the longest time to load (292 ms) belongs to the original domain Rschr.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.5 kB (66%)

Content Size

32.6 kB

After Optimization

11.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rschr.de main page is 32.6 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. Only 10% of websites need less resources to load. HTML takes 24.6 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 18.6 kB

  • Original 24.6 kB
  • After minification 23.2 kB
  • After compression 6.1 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 18.6 kB or 75% of the original size.

Image Optimization

-37%

Potential reduce by 1.0 kB

  • Original 2.7 kB
  • After minification 1.7 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, Rschr needs image optimization as it can save up to 1.0 kB or 37% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-36%

Potential reduce by 1.4 kB

  • Original 3.9 kB
  • After minification 3.9 kB
  • After compression 2.5 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 1.4 kB or 36% of the original size.

CSS Optimization

-35%

Potential reduce by 440 B

  • Original 1.3 kB
  • After minification 1.1 kB
  • After compression 832 B

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. Rschr.de needs all CSS files to be minified and compressed as it can save up to 440 B or 35% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rschr. According to our analytics all requests are already optimized.

Network Requests Diagram

rschr.de

rschr.de

292 ms

index.css

index.css

108 ms

backg.css

backg.css

202 ms

RS1Lib.js

RS1Lib.js

205 ms

Homeback.jpg

Homeback.jpg

123 ms

Seeing.gif

Seeing.gif

231 ms

Euphanim.gif

Euphanim.gif

110 ms

Accessibility Review

rschr.de accessibility score

86

Accessibility Issues

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

Links do not have a discernible name

Best Practices

rschr.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

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

rschr.de SEO score

97

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rschr.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Rschr.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

rschr.de

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