Tools & Wizards About Us
vaillantserwis.com.pl screenshot

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 a poor result, as 50% 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

  • HTML
  • Images
  • JavaScript

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

  • AJAX
  • Images
  • JavaScript

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.

Network Requests Diagram

vaillantserwis.com.pl

vaillantserwis.com.pl

522 ms

image293.jpg

image293.jpg

272 ms

image2951.jpg

image2951.jpg

357 ms

image595.gif

image595.gif

591 ms

image298.gif

image298.gif

273 ms

image2991.jpg

image2991.jpg

272 ms

image3001.gif

image3001.gif

273 ms

image302.gif

image302.gif

348 ms

image303.gif

image303.gif

363 ms

image304.gif

image304.gif

378 ms

image305.gif

image305.gif

396 ms

image509.gif

image509.gif

372 ms

image511.jpg

image511.jpg

373 ms

image513.jpg

image513.jpg

385 ms

image515.jpg

image515.jpg

392 ms

image517.jpg

image517.jpg

509 ms

image520.jpg

image520.jpg

488 ms

image524.jpg

image524.jpg

503 ms

image526.jpg

image526.jpg

510 ms

image528.jpg

image528.jpg

511 ms

image5321.jpg

image5321.jpg

601 ms

image534.jpg

image534.jpg

613 ms

image538.jpg

image538.jpg

620 ms

image540.jpg

image540.jpg

638 ms

image544.jpg

image544.jpg

627 ms

image562.jpg

image562.jpg

624 ms

image5631.jpg

image5631.jpg

715 ms

image5651.jpg

image5651.jpg

727 ms

image572.jpg

image572.jpg

751 ms

image574.jpg

image574.jpg

870 ms

image5761.jpg

image5761.jpg

747 ms

image578.jpg

image578.jpg

752 ms

image581.jpg

image581.jpg

830 ms

image584.jpg

image584.jpg

955 ms

image587.gif

image587.gif

877 ms

image592.gif

image592.gif

878 ms

2deb000b57bfac9d72c14d4ed967b572.js

2deb000b57bfac9d72c14d4ed967b572.js

916 ms

image593.gif

image593.gif

785 ms

image594.gif

image594.gif

822 ms

image603.jpg

image603.jpg

839 ms

image610.gif

image610.gif

839 ms

bfeaa809b0690f8533f043036b1c949e.js

bfeaa809b0690f8533f043036b1c949e.js

120 ms

gtm.js

gtm.js

20 ms

code

code

348 ms

close.gif

close.gif

533 ms

e51b477997c25bcd5fd3392e158aacbf.html

e51b477997c25bcd5fd3392e158aacbf.html

123 ms

pl1-sst-w.js

pl1-sst-w.js

15 ms

suiapi.js

suiapi.js

20 ms

sui.html

sui.html

6 ms

fpdata.js

fpdata.js

324 ms

lsget.html

lsget.html

236 ms

code

code

227 ms

bbnaut-lib-1.7.5.min.js

bbnaut-lib-1.7.5.min.js

470 ms

323 ms

462 ms

rexdot.js

rexdot.js

109 ms

redot.js

redot.js

106 ms

redot.js

redot.js

109 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

    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

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: