Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 46

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

physikon.de

Physik Lernen mit Physikon - lexikon lernportal studium schule homepage hausaufgabe buch referat facharbeit formelsammlung hausaufgaben

Page Load Speed

2.3 sec in total

First Response

337 ms

Resources Loaded

1.8 sec

Page Rendered

165 ms

physikon.de screenshot

About Website

Welcome to physikon.de homepage info - get ready to check Physikon best content for Germany right away, or after learning these important things about physikon.de

Interaktives Physik-Lernsystem für Schüler und Studenten mit Erklärungen zur Physik, Bildschirmexperimenten, Physik-Aufgaben, Physik-Applets, Foren, Physik-Links, Suchfunktionen, Lernfunktion ...

Visit physikon.de

Key Findings

We analyzed Physikon.de page load time and found that the first response time was 337 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

physikon.de performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

93/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

94/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value1,180 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0.086

93/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

physikon.de

337 ms

www.physikon.de

807 ms

cookie_consent.js

345 ms

show_ads.js

7 ms

space.gif

326 ms

Our browser made a total of 24 requests to load all elements on the main page. We found that 42% of them (10 requests) were addressed to the original Physikon.de, 17% (4 requests) were made to Pagead2.googlesyndication.com and 17% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (807 ms) belongs to the original domain Physikon.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.4 kB (40%)

Content Size

53.0 kB

After Optimization

31.6 kB

In fact, the total size of Physikon.de main page is 53.0 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. 20% of websites need less resources to load. HTML takes 26.3 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 20.2 kB

  • Original 26.3 kB
  • After minification 25.0 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 20.2 kB or 77% of the original size.

Image Optimization

-6%

Potential reduce by 715 B

  • Original 11.2 kB
  • After minification 10.4 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. Physikon images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 512 B

  • Original 15.6 kB
  • After minification 15.4 kB
  • After compression 15.1 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.

Requests Breakdown

Number of requests can be reduced by 6 (32%)

Requests Now

19

After Optimization

13

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Physikon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

physikon.de accessibility score

46

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.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

physikon.de best practices score

58

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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

physikon.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

    DE

  • 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 Physikon.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Physikon.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

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