Tools & Wizards About Us
duterm.pl screenshot

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

duterm.pl

Grzejniki centralnego ogrzewania, kaloryfery, grzejniki pokojowe, płytowe, Łódź - DU-TERM - Dystrybutor koncernu HM

Page Load Speed

2.3 sec in total

First Response

350 ms

Resources Loaded

1.8 sec

Page Rendered

156 ms

duterm.pl screenshot

About Website

Welcome to duterm.pl homepage info - get ready to check DU TERM best content right away, or after learning these important things about duterm.pl

Firma DU-TERM Łódź oferuje grzejniki niemieckiego koncernu - w ofercie znaleźć można grzejniki płytowe, pokojowe, kaloryfery, grzejniki centralnego ogrzewania, a także głowice termostatyczne czy też z...

Visit duterm.pl

Key Findings

We analyzed Duterm.pl page load time and found that the first response time was 350 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

duterm.pl performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

82/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value2.4 s

98/100

10%

Network Requests Diagram

duterm.pl

350 ms

www.duterm.pl

476 ms

flagi.css

168 ms

prototype.js

373 ms

scriptaculous.js

217 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that all of those requests were addressed to Duterm.pl and no external sources were called. The less responsive or slowest element that took the longest time to load (476 ms) belongs to the original domain Duterm.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.2 kB (18%)

Content Size

171.3 kB

After Optimization

141.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duterm.pl main page is 171.3 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. 15% of websites need less resources to load. Images take 102.9 kB which makes up the majority of the site volume.

HTML Optimization

-65%

Potential reduce by 7.3 kB

  • Original 11.1 kB
  • After minification 10.4 kB
  • After compression 3.9 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 7.3 kB or 65% of the original size.

Image Optimization

-4%

Potential reduce by 3.6 kB

  • Original 102.9 kB
  • After minification 99.3 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. DU TERM images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 18.4 kB

  • Original 53.0 kB
  • After minification 52.7 kB
  • After compression 34.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 18.4 kB or 35% of the original size.

CSS Optimization

-24%

Potential reduce by 982 B

  • Original 4.2 kB
  • After minification 4.2 kB
  • After compression 3.2 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. Duterm.pl needs all CSS files to be minified and compressed as it can save up to 982 B or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (36%)

Requests Now

25

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DU TERM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

duterm.pl

duterm.pl

350 ms

www.duterm.pl

www.duterm.pl

476 ms

flagi.css

flagi.css

168 ms

prototype.js

prototype.js

373 ms

scriptaculous.js

scriptaculous.js

217 ms

lightbox.js

lightbox.js

218 ms

lightbox.css

lightbox.css

224 ms

style.css

style.css

225 ms

effects.js

effects.js

131 ms

builder.js

builder.js

111 ms

themavertikalsmall.jpg

themavertikalsmall.jpg

120 ms

1597264203.jpg

1597264203.jpg

116 ms

1291022753.jpg

1291022753.jpg

238 ms

menu_lewy_orange.png

menu_lewy_orange.png

113 ms

menu_prawy_orange.png

menu_prawy_orange.png

117 ms

menu_lewy_bialy.png

menu_lewy_bialy.png

117 ms

menu_prawy_bialy.png

menu_prawy_bialy.png

113 ms

c6f7588795491d58d47b32b095d1c8a4.jpg

c6f7588795491d58d47b32b095d1c8a4.jpg

220 ms

925ffec65bc5a1c690e14fc1b0309a8b.jpg

925ffec65bc5a1c690e14fc1b0309a8b.jpg

228 ms

da53ffd0e5d36370773c96fda287ae4f.jpg

da53ffd0e5d36370773c96fda287ae4f.jpg

238 ms

3e2e62fc2c069ca27eebdc307ef5052a.jpg

3e2e62fc2c069ca27eebdc307ef5052a.jpg

228 ms

product_small_photo.jpg

product_small_photo.jpg

229 ms

product_small_photo_c.jpg

product_small_photo_c.jpg

333 ms

product_small_photo_v.jpg

product_small_photo_v.jpg

339 ms

duterm_footer_bg.jpg

duterm_footer_bg.jpg

335 ms

duterm_muhr_logo.jpg

duterm_muhr_logo.jpg

340 ms

themavertikalsmall.jpg

themavertikalsmall.jpg

230 ms

loading.gif

loading.gif

116 ms

closelabel.gif

closelabel.gif

110 ms

Accessibility Review

duterm.pl accessibility score

54

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

High

Links do not have a discernible name

Best Practices

duterm.pl best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

duterm.pl SEO score

69

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

    N/A

  • Encoding

    UTF-8

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

duterm.pl

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