Tools & Wizards About Us
vitodata300.viessmann.com screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

vitodata300.viessmann.com

Vitodata 300 Energiemanagement für Viessmann Heizungen mit Vitocom 100 LAN1, Vitocom 200 LAN2 oder Vitocom 300 LAN3

Page Load Speed

2.6 sec in total

First Response

400 ms

Resources Loaded

2.1 sec

Page Rendered

86 ms

vitodata300.viessmann.com screenshot

About Website

Visit vitodata300.viessmann.com now to see the best up-to-date Vitodata 300 Viessmann content for Turkey and also check out these interesting facts you probably never knew about vitodata300.viessmann.com

Vitodata 300 Energiemanagement für die Fernüberwachung von Viessmann Heizungen mit Vitotronic Regelung und Vitocom 100 LAN1, Vitocom 200 LAN2 oder Vitocom 300 LAN3 Kommunikationsgerät

Visit vitodata300.viessmann.com

Key Findings

We analyzed Vitodata300.viessmann.com page load time and found that the first response time was 400 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

vitodata300.viessmann.com performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.8 s

1/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value7.0 s

53/100

10%

Network Requests Diagram

vitodata300.viessmann.com

400 ms

VD300

100 ms

104 ms

Login.aspx

260 ms

WebResource.axd

192 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that all of those requests were addressed to Vitodata300.viessmann.com and no external sources were called. The less responsive or slowest element that took the longest time to load (759 ms) belongs to the original domain Vitodata300.viessmann.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 807.4 kB (56%)

Content Size

1.5 MB

After Optimization

643.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vitodata300.viessmann.com main page is 1.5 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. 25% of websites need less resources to load. CSS take 597.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 44.7 kB

  • Original 57.3 kB
  • After minification 55.0 kB
  • After compression 12.6 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 44.7 kB or 78% of the original size.

Image Optimization

-8%

Potential reduce by 17.9 kB

  • Original 214.8 kB
  • After minification 196.9 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. Vitodata 300 Viessmann images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 224.8 kB

  • Original 581.2 kB
  • After minification 572.9 kB
  • After compression 356.5 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 224.8 kB or 39% of the original size.

CSS Optimization

-87%

Potential reduce by 520.0 kB

  • Original 597.6 kB
  • After minification 473.2 kB
  • After compression 77.6 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. Vitodata300.viessmann.com needs all CSS files to be minified and compressed as it can save up to 520.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (54%)

Requests Now

24

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vitodata 300 Viessmann. 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 as a result speed up the page load time.

Network Requests Diagram

vitodata300.viessmann.com

vitodata300.viessmann.com

400 ms

VD300

VD300

100 ms

104 ms

Login.aspx

Login.aspx

260 ms

WebResource.axd

WebResource.axd

192 ms

Telerik.Web.UI.WebResource.axd

Telerik.Web.UI.WebResource.axd

433 ms

WebResource.axd

WebResource.axd

306 ms

ScriptResource.axd

ScriptResource.axd

306 ms

WebResource.axd

WebResource.axd

307 ms

Telerik.Web.UI.WebResource.axd

Telerik.Web.UI.WebResource.axd

759 ms

JavaScript.Prototype.Extention.js

JavaScript.Prototype.Extention.js

322 ms

jQuery.ui.js

jQuery.ui.js

694 ms

jQuery.json.js

jQuery.json.js

405 ms

jQuery.extention.js

jQuery.extention.js

406 ms

jQuery.cookie.js

jQuery.cookie.js

421 ms

Common.js

Common.js

505 ms

Utils.js

Utils.js

513 ms

Events.js

Events.js

521 ms

Transitions.js

Transitions.js

530 ms

WebResource.axd

WebResource.axd

602 ms

WebResource.axd

WebResource.axd

150 ms

ViessmannLogo.png

ViessmannLogo.png

162 ms

BgLogin.png

BgLogin.png

267 ms

WebResource.axd

WebResource.axd

99 ms

cmdButtonArrrowLine.png

cmdButtonArrrowLine.png

102 ms

cmdButtonArrrow.png

cmdButtonArrrow.png

101 ms

WebResource.axd

WebResource.axd

99 ms

WebResource.axd

WebResource.axd

99 ms

Accessibility Review

vitodata300.viessmann.com accessibility score

60

Accessibility Issues

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.

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

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

vitodata300.viessmann.com best practices score

50

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

vitodata300.viessmann.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

Links are not crawlable

High

robots.txt is not valid

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vitodata300.viessmann.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Vitodata300.viessmann.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

vitodata300.viessmann.com

Open Graph description is not detected on the main page of Vitodata 300 Viessmann. 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: