Tools & Wizards About Us
duktus.com screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

duktus.com

ZEROWATERLOSS - VONROLL HYDRO - Security for strategic water

Page Load Speed

23.8 sec in total

First Response

255 ms

Resources Loaded

23.1 sec

Page Rendered

454 ms

duktus.com screenshot

About Website

Click here to check amazing Duktus content. Otherwise, check out these important facts you probably never knew about duktus.com

VONROLL HYDRO – the leading Swiss provider of products and services for gas and water supply systems.

Visit duktus.com

Key Findings

We analyzed Duktus.com page load time and found that the first response time was 255 ms and then it took 23.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

duktus.com performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value9.6 s

0/100

25%

SI (Speed Index)

Value20.7 s

0/100

10%

TBT (Total Blocking Time)

Value740 ms

40/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value16.7 s

5/100

10%

Network Requests Diagram

duktus.com

255 ms

1036 ms

app.e88f1f68.css

134 ms

app.4b48501f.js

248 ms

chosen.css

332 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Duktus.com, 91% (49 requests) were made to Vonroll-hydro.world and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Vrh.m-4.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 517.7 kB (11%)

Content Size

4.7 MB

After Optimization

4.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duktus.com main page is 4.7 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. 50% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 331.9 kB

  • Original 400.7 kB
  • After minification 394.8 kB
  • After compression 68.8 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 331.9 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 169.3 kB

  • Original 3.9 MB
  • After minification 3.8 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. Duktus images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 4.6 kB

  • Original 269.4 kB
  • After minification 269.4 kB
  • After compression 264.7 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.

CSS Optimization

-21%

Potential reduce by 11.9 kB

  • Original 56.1 kB
  • After minification 56.1 kB
  • After compression 44.2 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. Duktus.com needs all CSS files to be minified and compressed as it can save up to 11.9 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (31%)

Requests Now

48

After Optimization

33

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duktus. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

duktus.com

duktus.com

255 ms

1036 ms

app.e88f1f68.css

app.e88f1f68.css

134 ms

app.4b48501f.js

app.4b48501f.js

248 ms

chosen.css

chosen.css

332 ms

owl.carousel.css,owl.video.css,owl.theme.BS.css,jquery.mb.YTPlay...-173d011e.css

owl.carousel.css,owl.video.css,owl.theme.BS.css,jquery.mb.YTPlay...-173d011e.css

549 ms

jquery.min.js,mootools.min.js,owl.carousel.js,owl.autoplay.js,ow...-09599fc4.js

jquery.min.js,mootools.min.js,owl.carousel.js,owl.autoplay.js,ow...-09599fc4.js

960 ms

colorbox.min.js

colorbox.min.js

306 ms

tablesorter.min.js

tablesorter.min.js

414 ms

jquery-ui.min.js

jquery-ui.min.js

331 ms

project_hydro.js

project_hydro.js

417 ms

typeahead.bundle.min.js

typeahead.bundle.min.js

417 ms

app.e88f1f68.css

app.e88f1f68.css

226 ms

chosen.css

chosen.css

245 ms

owl.carousel.css,owl.video.css,owl.theme.BS.css,jquery.mb.YTPlay...-173d011e.css

owl.carousel.css,owl.video.css,owl.theme.BS.css,jquery.mb.YTPlay...-173d011e.css

330 ms

gtm.js

gtm.js

97 ms

mtc.js

mtc.js

20358 ms

insight.min.js

insight.min.js

96 ms

duktus.svg

duktus.svg

245 ms

keula.svg

keula.svg

247 ms

altecno_header.svg

altecno_header.svg

243 ms

hydro_color.svg

hydro_color.svg

248 ms

direction196.svg

direction196.svg

298 ms

direction202.svg

direction202.svg

298 ms

BLS_Teaser.jpg

BLS_Teaser.jpg

841 ms

vonroll-hydro-TELL-INFRAPORT-FocusWindow.jpg

vonroll-hydro-TELL-INFRAPORT-FocusWindow.jpg

2208 ms

FocusWindow_Ortomat_MTC_EN.jpg

FocusWindow_Ortomat_MTC_EN.jpg

623 ms

ufo_focuswindow.png

ufo_focuswindow.png

437 ms

LEAKPEN_Spotlight_2023.gif

LEAKPEN_Spotlight_2023.gif

439 ms

spotlight-ortomat-500x303.png

spotlight-ortomat-500x303.png

528 ms

vonroll-hydro-entwaesserung-bauguss-schachtabdeckung-strassenrost.png

vonroll-hydro-entwaesserung-bauguss-schachtabdeckung-strassenrost.png

735 ms

Spotlight_Hydranten_Anleitungen_Small_800x530.png

Spotlight_Hydranten_Anleitungen_Small_800x530.png

841 ms

BIM.png

BIM.png

635 ms

Logo-Ecoplaner2.png

Logo-Ecoplaner2.png

730 ms

facebook-56862ea8.svg

facebook-56862ea8.svg

742 ms

linkedin-3c2a49db.svg

linkedin-3c2a49db.svg

838 ms

instagram-0ad82c2f.svg

instagram-0ad82c2f.svg

843 ms

youtube-bd916099.svg

youtube-bd916099.svg

849 ms

twitter-93eaa866.svg

twitter-93eaa866.svg

946 ms

casting_color-43892624.svg

casting_color-43892624.svg

949 ms

hydro_color-16b98ddc.svg

hydro_color-16b98ddc.svg

951 ms

keula-95cd3201.svg

keula-95cd3201.svg

950 ms

duktus-512d3885.svg

duktus-512d3885.svg

955 ms

bikes_color-0d4c030f.svg

bikes_color-0d4c030f.svg

1053 ms

handling_color-a728cec7.svg

handling_color-a728cec7.svg

1056 ms

altecno_color-5c7e48e7.svg

altecno_color-5c7e48e7.svg

1058 ms

ecoparts_color-db64ad30.svg

ecoparts_color-db64ad30.svg

1053 ms

logo-Hydro-Duktus-Keula.png

logo-Hydro-Duktus-Keula.png

1060 ms

print.css

print.css

1088 ms

2FEEB4_1_0.woff

2FEEB4_1_0.woff

1103 ms

icomoon.ttf

icomoon.ttf

1103 ms

2FEEB4_0_0.woff

2FEEB4_0_0.woff

1029 ms

insight_tag_errors.gif

insight_tag_errors.gif

182 ms

print.css

print.css

109 ms

Accessibility Review

duktus.com accessibility score

76

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

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

High

[role]s are not contained by their required parent element

High

ARIA IDs are not unique

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.

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

Links do not have a discernible name

Best Practices

duktus.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

duktus.com SEO score

92

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Duktus.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Duktus.com 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

duktus.com

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