Report Summary

  • 83

    Performance

    Renders faster than
    88% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

vaillantserwis.com.pl

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

Page Load Speed

3.2 sec in total

First Response

522 ms

Resources Loaded

2.3 sec

Page Rendered

446 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 522 ms and then it took 2.7 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)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value2.8 s

96/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

Network Requests Diagram

vaillantserwis.com.pl

522 ms

image293.jpg

272 ms

image2951.jpg

357 ms

image595.gif

591 ms

image298.gif

273 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 74% of them (43 requests) were addressed to the original Vaillantserwis.com.pl, 7% (4 requests) were made to Go.pl.bbelements.com and 7% (4 requests) were made to Gapl.hit.gemius.pl. The less responsive or slowest element that took the longest time to load (955 ms) belongs to the original domain Vaillantserwis.com.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 275.3 kB (52%)

Content Size

525.9 kB

After Optimization

250.7 kB

In fact, the total size of Vaillantserwis.com.pl main page is 525.9 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. HTML takes 257.0 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 221.5 kB

  • Original 257.0 kB
  • After minification 252.0 kB
  • After compression 35.5 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. 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 221.5 kB or 86% of the original size.

Image Optimization

-7%

Potential reduce by 14.8 kB

  • Original 211.6 kB
  • After minification 196.7 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

-68%

Potential reduce by 38.9 kB

  • Original 57.3 kB
  • After minification 53.2 kB
  • After compression 18.4 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 38.9 kB or 68% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (39%)

Requests Now

57

After Optimization

35

The browser has sent 57 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 14 to 1 for JavaScripts and as a result speed up the page load time.

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

    WINDOWS-1250

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 windows-1250. 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

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: