Tools & Wizards About Us
zvshk.de screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

zvshk.de

Zentralverband SHK: zvshk.de

Page Load Speed

5.3 sec in total

First Response

303 ms

Resources Loaded

3.6 sec

Page Rendered

1.4 sec

zvshk.de screenshot

About Website

Click here to check amazing Zv SHK content for Germany. Otherwise, check out these important facts you probably never knew about zvshk.de

Der ZVSHK vertritt die Interessen der Installateure, Klempner, Behälter- und Apparatebauer sowie der Ofen- und Luftheizungsbauer.

Visit zvshk.de

Key Findings

We analyzed Zvshk.de page load time and found that the first response time was 303 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

zvshk.de performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.0 s

76/100

10%

Network Requests Diagram

zvshk.de

303 ms

www.zvshk.de

917 ms

cookie_panel.css

196 ms

b36fc0188e.css

292 ms

Basic.css

292 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that all of those requests were addressed to Zvshk.de and no external sources were called. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Zvshk.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (14%)

Content Size

10.0 MB

After Optimization

8.6 MB

  • HTML
  • Images

In fact, the total size of Zvshk.de main page is 10.0 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. 55% of websites need less resources to load. Images take 9.9 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 67.5 kB

  • Original 83.1 kB
  • After minification 72.2 kB
  • After compression 15.5 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 10.9 kB, which is 13% 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 67.5 kB or 81% of the original size.

Image Optimization

-14%

Potential reduce by 1.4 MB

  • Original 9.9 MB
  • After minification 8.6 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. Obviously, Zv SHK needs image optimization as it can save up to 1.4 MB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 24 (30%)

Requests Now

79

After Optimization

55

  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zv SHK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zvshk.de

zvshk.de

303 ms

www.zvshk.de

www.zvshk.de

917 ms

cookie_panel.css

cookie_panel.css

196 ms

b36fc0188e.css

b36fc0188e.css

292 ms

Basic.css

Basic.css

292 ms

style.css

style.css

294 ms

cookiebanner.css

cookiebanner.css

296 ms

jquery-ui.min.css

jquery-ui.min.css

300 ms

bootstrap.min.css

bootstrap.min.css

400 ms

select2.min.css

select2.min.css

387 ms

lightbox.css

lightbox.css

387 ms

slick.css

slick.css

392 ms

style.css

style.css

395 ms

style_responsive.css

style_responsive.css

404 ms

jquery-1.11.0.min.js

jquery-1.11.0.min.js

583 ms

bootstrap.min.js

bootstrap.min.js

484 ms

jquery-ui.min.js

jquery-ui.min.js

597 ms

script.js

script.js

494 ms

om_cookie_main.js

om_cookie_main.js

406 ms

jquery.datetimepicker.min.js

jquery.datetimepicker.min.js

406 ms

parsley.min.js

parsley.min.js

489 ms

Tabs.min.js

Tabs.min.js

502 ms

Form.min.js

Form.min.js

579 ms

shariff.complete.js

shariff.complete.js

611 ms

cookiebanner.js

cookiebanner.js

589 ms

select2.min.js

select2.min.js

594 ms

lightbox.js

lightbox.js

599 ms

slick.min.js

slick.min.js

602 ms

check.png

check.png

125 ms

logo.svg

logo.svg

146 ms

logo_ring.svg

logo_ring.svg

149 ms

suche.svg

suche.svg

162 ms

ZVSHK_Header.jpg

ZVSHK_Header.jpg

262 ms

index.php

index.php

357 ms

index.php

index.php

383 ms

csm_slider75Hilpert2_e110b65de6.png

csm_slider75Hilpert2_e110b65de6.png

642 ms

index.php

index.php

518 ms

index.php

index.php

1037 ms

index.php

index.php

427 ms

slider-left.svg

slider-left.svg

457 ms

slider-right.svg

slider-right.svg

482 ms

icon_login.svg

icon_login.svg

530 ms

csm_factsheetholzwaerme1_61f3ca6114.png

csm_factsheetholzwaerme1_61f3ca6114.png

616 ms

news_default.jpg

news_default.jpg

729 ms

csm_ZVSHK_QZ-Visual_2024_MASTER_A4_QUER_4C_ISO_v2_abc457483d.jpg

csm_ZVSHK_QZ-Visual_2024_MASTER_A4_QUER_4C_ISO_v2_abc457483d.jpg

637 ms

csm_Helmut_Bramann_Schreibtisch_07_87c85f23c5.jpg

csm_Helmut_Bramann_Schreibtisch_07_87c85f23c5.jpg

654 ms

csm_buzzerBild1_7b83547006.png

csm_buzzerBild1_7b83547006.png

826 ms

csm_Film_75Historie_01_0221463a19.png

csm_Film_75Historie_01_0221463a19.png

748 ms

csm_tagdesbades24klein_98bb9b4a85.png

csm_tagdesbades24klein_98bb9b4a85.png

756 ms

csm_Helmut_Bramann_quer_aussen_Facebook_11_8daf9eae0f.jpg

csm_Helmut_Bramann_quer_aussen_Facebook_11_8daf9eae0f.jpg

775 ms

index.php

index.php

929 ms

index.php

index.php

987 ms

index.php

index.php

973 ms

index.php

index.php

994 ms

index.php

index.php

1002 ms

index.php

index.php

1097 ms

index.php

index.php

1175 ms

index.php

index.php

1564 ms

index.php

index.php

1273 ms

index.php

index.php

1242 ms

index.php

index.php

1196 ms

index.php

index.php

1219 ms

index.php

index.php

1273 ms

index.php

index.php

1317 ms

index.php

index.php

1353 ms

index.php

index.php

1376 ms

index.php

index.php

1379 ms

index.php

index.php

1358 ms

index.php

index.php

1362 ms

index.php

index.php

1310 ms

index.php

index.php

1434 ms

quicklink.svg

quicklink.svg

1200 ms

facebook.svg

facebook.svg

1179 ms

twitter.svg

twitter.svg

1219 ms

youtube.svg

youtube.svg

1217 ms

mail.svg

mail.svg

1187 ms

facebook_teilen.svg

facebook_teilen.svg

1127 ms

prev.png

prev.png

1130 ms

next.png

next.png

1157 ms

loading.gif

loading.gif

1168 ms

close.png

close.png

1091 ms

Accessibility Review

zvshk.de accessibility score

80

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

zvshk.de best practices score

83

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

SEO Factors

zvshk.de SEO score

82

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

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

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 Zvshk.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 Zvshk.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

zvshk.de

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