Tools & Wizards About Us
zns-spektrum.com screenshot

Report Summary

  • 86

    Performance

    Renders faster than
    89% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

zns-spektrum.com

ZNS-SPEKTRUM online

Page Load Speed

1.5 sec in total

First Response

342 ms

Resources Loaded

968 ms

Page Rendered

230 ms

zns-spektrum.com screenshot

About Website

Visit zns-spektrum.com now to see the best up-to-date ZNS SPEKTRUM content and also check out these interesting facts you probably never knew about zns-spektrum.com

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Visit zns-spektrum.com

Key Findings

We analyzed Zns-spektrum.com page load time and found that the first response time was 342 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

zns-spektrum.com performance score

86

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.9 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value400 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.7 s

57/100

10%

Network Requests Diagram

zns-spektrum.com

342 ms

show_ads.js

7 ms

0Innere-Objekte.jpg

264 ms

ca-pub-4343802973137469.js

235 ms

zrt_lookup.html

268 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 13% of them (2 requests) were addressed to the original Zns-spektrum.com, 27% (4 requests) were made to Pagead2.googlesyndication.com and 27% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (342 ms) belongs to the original domain Zns-spektrum.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 8.6 kB (17%)

Content Size

50.4 kB

After Optimization

41.8 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zns-spektrum.com main page is 50.4 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. 30% of websites need less resources to load. Images take 23.6 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 8.0 kB

  • Original 11.2 kB
  • After minification 10.0 kB
  • After compression 3.2 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. This page needs HTML code to be minified as it can gain 1.2 kB, which is 11% 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 8.0 kB or 72% of the original size.

Image Optimization

-2%

Potential reduce by 520 B

  • Original 23.6 kB
  • After minification 23.0 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. ZNS SPEKTRUM images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 66 B

  • Original 15.7 kB
  • After minification 15.7 kB
  • After compression 15.6 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 5 (36%)

Requests Now

14

After Optimization

9

  • AJAX
  • Images
  • JavaScript

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZNS SPEKTRUM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zns-spektrum.com

zns-spektrum.com

342 ms

show_ads.js

show_ads.js

7 ms

0Innere-Objekte.jpg

0Innere-Objekte.jpg

264 ms

ca-pub-4343802973137469.js

ca-pub-4343802973137469.js

235 ms

zrt_lookup.html

zrt_lookup.html

268 ms

show_ads_impl.js

show_ads_impl.js

68 ms

ads

ads

210 ms

osd.js

osd.js

40 ms

m_js_controller.js

m_js_controller.js

53 ms

abg.js

abg.js

81 ms

favicon

favicon

68 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

63 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

38 ms

s

s

27 ms

x_button_blue2.png

x_button_blue2.png

20 ms

Accessibility Review

zns-spektrum.com accessibility score

56

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

zns-spektrum.com 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

zns-spektrum.com SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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

    DE

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zns-spektrum.com 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 Zns-spektrum.com 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

zns-spektrum.com

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