Tools & Wizards About Us
jgiesen.de screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

jgiesen.de

Physik und Astronomie: Applets, Materialien

Page Load Speed

3.8 sec in total

First Response

544 ms

Resources Loaded

3.1 sec

Page Rendered

151 ms

jgiesen.de screenshot

About Website

Welcome to jgiesen.de homepage info - get ready to check Jgiesen best content for United States right away, or after learning these important things about jgiesen.de

Java-Applets und Materialien zu Physik, Astronomie, Mathematik, Informatik fuer Physik-Interessierte, Schule und Unterricht

Visit jgiesen.de

Key Findings

We analyzed Jgiesen.de page load time and found that the first response time was 544 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

jgiesen.de performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.1 s

100/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.1 s

100/100

10%

Network Requests Diagram

jgiesen.de

544 ms

welcome.js

212 ms

phuas.gif

110 ms

sitemap.gif

110 ms

english.gif

216 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that all of those requests were addressed to Jgiesen.de and no external sources were called. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Jgiesen.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 85.0 kB (6%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jgiesen.de main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 13.8 kB

  • Original 17.5 kB
  • After minification 12.7 kB
  • After compression 3.7 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 4.9 kB, which is 28% 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 13.8 kB or 79% of the original size.

Image Optimization

-5%

Potential reduce by 68.2 kB

  • Original 1.4 MB
  • After minification 1.3 MB

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. Jgiesen images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 3.0 kB

  • Original 3.9 kB
  • After minification 2.7 kB
  • After compression 863 B

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 3.0 kB or 78% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

36

After Optimization

36

  • Images
  • JavaScript

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jgiesen. According to our analytics all requests are already optimized.

Network Requests Diagram

jgiesen.de

jgiesen.de

544 ms

welcome.js

welcome.js

212 ms

phuas.gif

phuas.gif

110 ms

sitemap.gif

sitemap.gif

110 ms

english.gif

english.gif

216 ms

inEnglish.gif

inEnglish.gif

217 ms

GeoAstroApplets.gif

GeoAstroApplets.gif

214 ms

geoastrotext.gif

geoastrotext.gif

216 ms

java.gif

java.gif

217 ms

JavaText.gif

JavaText.gif

217 ms

chaos.gif

chaos.gif

323 ms

chaosText.gif

chaosText.gif

322 ms

mac.gif

mac.gif

323 ms

macText.gif

macText.gif

323 ms

wer.gif

wer.gif

325 ms

werText.gif

werText.gif

325 ms

divers.gif

divers.gif

429 ms

diversText.gif

diversText.gif

430 ms

quiz.gif

quiz.gif

430 ms

quizText.gif

quizText.gif

431 ms

astronomie.gif

astronomie.gif

433 ms

astronomietext.gif

astronomietext.gif

433 ms

html.gif

html.gif

537 ms

htmltext.gif

htmltext.gif

537 ms

erdesonne.gif

erdesonne.gif

538 ms

erdesonnetext.gif

erdesonnetext.gif

538 ms

uvBild.gif

uvBild.gif

540 ms

uvText.gif

uvText.gif

540 ms

VenusTransitOrdner.gif

VenusTransitOrdner.gif

644 ms

venusGermanText.gif

venusGermanText.gif

645 ms

MercuryTransitOrdner.gif

MercuryTransitOrdner.gif

646 ms

mercuryText.gif

mercuryText.gif

646 ms

back.gif

back.gif

648 ms

stamps.jpg

stamps.jpg

2442 ms

Ordner.gif

Ordner.gif

753 ms

books4.gif

books4.gif

753 ms

email.gif

email.gif

752 ms

Accessibility Review

jgiesen.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

jgiesen.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

jgiesen.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

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jgiesen.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 Jgiesen.de main page’s claimed encoding is windows-1252. 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

jgiesen.de

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