Tools & Wizards About Us

Report Summary

  • 73

    Performance

    Renders faster than
    82% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

jusbook.de

jusbook.de jetzt kaufen!

Page Load Speed

2.1 sec in total

First Response

403 ms

Resources Loaded

1.6 sec

Page Rendered

116 ms

About Website

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

Kaufen Sie jetzt diese Domain

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Key Findings

We analyzed Jusbook.de page load time and found that the first response time was 403 ms and then it took 1.7 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

jusbook.de performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.139

79/100

15%

TTI (Time to Interactive)

Value4.6 s

82/100

10%

Network Requests Diagram

jusbook.de

403 ms

layout.css

101 ms

style.css

192 ms

lightbox.css

195 ms

prototype.js

402 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 85% of them (40 requests) were addressed to the original Jusbook.de, 9% (4 requests) were made to Pagead2.googlesyndication.com and 4% (2 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (497 ms) belongs to the original domain Jusbook.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 116.5 kB (53%)

Content Size

219.0 kB

After Optimization

102.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jusbook.de main page is 219.0 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. 25% of websites need less resources to load. Javascripts take 130.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 7.5 kB

  • Original 10.6 kB
  • After minification 9.1 kB
  • After compression 3.1 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. This page needs HTML code to be minified as it can gain 1.6 kB, which is 15% 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 7.5 kB or 71% of the original size.

Image Optimization

-6%

Potential reduce by 4.1 kB

  • Original 65.9 kB
  • After minification 61.8 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. Jusbook images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 95.7 kB

  • Original 130.6 kB
  • After minification 96.3 kB
  • After compression 34.9 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 95.7 kB or 73% of the original size.

CSS Optimization

-77%

Potential reduce by 9.1 kB

  • Original 11.8 kB
  • After minification 9.8 kB
  • After compression 2.7 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. Jusbook.de needs all CSS files to be minified and compressed as it can save up to 9.1 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (62%)

Requests Now

45

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jusbook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jusbook.de accessibility score

60

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

<frame> or <iframe> elements do not have a title

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

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

jusbook.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

jusbook.de SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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 Jusbook.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 Jusbook.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 Jusbook. 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: