Tools & Wizards About Us
vaillantserwis.com.pl screenshot

Report Summary

  • 83

    Performance

    Renders faster than
    87% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

vaillantserwis.com.pl

Serwis Naprawa Przeglądy Instalacja Vaillant w Szczecinie 692-353-257

Page Load Speed

2.7 sec in total

First Response

490 ms

Resources Loaded

1.7 sec

Page Rendered

531 ms

vaillantserwis.com.pl screenshot

About Website

Welcome to vaillantserwis.com.pl homepage info - get ready to check Vaillant Serwis Com best content right away, or after learning these important things about vaillantserwis.com.pl

692-353-257 autoryzowany serwis instalator vaillant szczecin i całe zachodniopomorskie,Serwis Naprawa Przeglądy Instalacja Vaillant w Szczecinie, Serwis vaillant Szczecin,naprawa pieców i bojlerów gaz...

Visit vaillantserwis.com.pl

Key Findings

We analyzed Vaillantserwis.com.pl page load time and found that the first response time was 490 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

vaillantserwis.com.pl performance score

83

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

49/100

25%

SI (Speed Index)

Value2.9 s

95/100

10%

TBT (Total Blocking Time)

Value160 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value2.9 s

96/100

10%

Network Requests Diagram

vaillantserwis.com.pl

490 ms

Zadzwon.css

228 ms

creative.css

233 ms

bootstrap.css

351 ms

font-awesome.css

239 ms

Our browser made a total of 54 requests to load all elements on the main page. We found that 96% of them (52 requests) were addressed to the original Vaillantserwis.com.pl, 4% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (926 ms) belongs to the original domain Vaillantserwis.com.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 206.2 kB (40%)

Content Size

511.0 kB

After Optimization

304.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vaillantserwis.com.pl main page is 511.0 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. 40% of websites need less resources to load. HTML takes 209.5 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 186.5 kB

  • Original 209.5 kB
  • After minification 202.4 kB
  • After compression 22.9 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 186.5 kB or 89% of the original size.

Image Optimization

-8%

Potential reduce by 17.0 kB

  • Original 208.8 kB
  • After minification 191.8 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. Vaillant Serwis Com images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 95 B

  • Original 61.7 kB
  • After minification 61.7 kB
  • After compression 61.6 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.

CSS Optimization

-8%

Potential reduce by 2.6 kB

  • Original 31.1 kB
  • After minification 31.1 kB
  • After compression 28.5 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. Vaillantserwis.com.pl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (31%)

Requests Now

51

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vaillant Serwis Com. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vaillantserwis.com.pl

vaillantserwis.com.pl

490 ms

Zadzwon.css

Zadzwon.css

228 ms

creative.css

creative.css

233 ms

bootstrap.css

bootstrap.css

351 ms

font-awesome.css

font-awesome.css

239 ms

css

css

37 ms

css

css

52 ms

magnific-popup.css

magnific-popup.css

242 ms

creative.css

creative.css

233 ms

zadzwo%C5%84.jpg

zadzwo%C5%84.jpg

335 ms

image2951.jpg

image2951.jpg

455 ms

image595.gif

image595.gif

686 ms

image298.gif

image298.gif

412 ms

image2991.jpg

image2991.jpg

460 ms

image3001.gif

image3001.gif

449 ms

image302.gif

image302.gif

456 ms

image303.gif

image303.gif

461 ms

image304.gif

image304.gif

565 ms

image305.gif

image305.gif

797 ms

image509.gif

image509.gif

571 ms

image5111.jpg

image5111.jpg

573 ms

image5131.jpg

image5131.jpg

576 ms

image5151.jpg

image5151.jpg

679 ms

image5171.jpg

image5171.jpg

686 ms

image5201.jpg

image5201.jpg

688 ms

image5241.jpg

image5241.jpg

691 ms

image5261.jpg

image5261.jpg

796 ms

image5281.jpg

image5281.jpg

799 ms

image5321.jpg

image5321.jpg

800 ms

image5341.jpg

image5341.jpg

802 ms

image5381.jpg

image5381.jpg

804 ms

image5401.jpg

image5401.jpg

910 ms

image5441.jpg

image5441.jpg

911 ms

image5621.jpg

image5621.jpg

811 ms

image5631.jpg

image5631.jpg

811 ms

image5651.jpg

image5651.jpg

814 ms

image5721.jpg

image5721.jpg

817 ms

image5741.jpg

image5741.jpg

922 ms

jquery.min.js

jquery.min.js

926 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

835 ms

jquery.easing.min.js

jquery.easing.min.js

830 ms

scrollreveal.min.js

scrollreveal.min.js

840 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

832 ms

creative.min.js

creative.min.js

910 ms

image5761.jpg

image5761.jpg

821 ms

image5781.jpg

image5781.jpg

745 ms

image5811.jpg

image5811.jpg

746 ms

image5841.jpg

image5841.jpg

821 ms

image587.gif

image587.gif

705 ms

image592.gif

image592.gif

805 ms

image593.gif

image593.gif

804 ms

image594.gif

image594.gif

806 ms

image6031.jpg

image6031.jpg

709 ms

image293.jpg

image293.jpg

702 ms

Accessibility Review

vaillantserwis.com.pl accessibility score

70

Accessibility Issues

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

Image elements do not have [alt] attributes

Best Practices

vaillantserwis.com.pl 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

vaillantserwis.com.pl SEO score

67

Search Engine Optimization Advices

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

    PL

  • Language Claimed

    PL

  • Encoding

    UTF-8

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

vaillantserwis.com.pl

Open Graph description is not detected on the main page of Vaillant Serwis Com. 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: