Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

instalco.pl

Ogrzewanie podłogowe, centralne, technika grzewcza - sklep InstalCO

Page Load Speed

5.6 sec in total

First Response

966 ms

Resources Loaded

3.9 sec

Page Rendered

747 ms

About Website

Visit instalco.pl now to see the best up-to-date InstalCO content and also check out these interesting facts you probably never knew about instalco.pl

Ogrzewanie podłogowe, smart home i maty elektryczne - to tylko niektóre z naszych produktów. Znajdziesz u nas także płyty energooszczędne, rozdzielacze, akcesoria hydrauliczne i materiały instalacyjne...

Visit instalco.pl

Key Findings

We analyzed Instalco.pl page load time and found that the first response time was 966 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

instalco.pl performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value8.0 s

21/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.72

6/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

instalco.pl

966 ms

Mjk6OTU6NS4yNC4yNA.css

323 ms

main.9db66de91ad725e2b0f8.min.js

947 ms

pl_PL.js

457 ms

user.js

465 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 92% of them (24 requests) were addressed to the original Instalco.pl, 4% (1 request) were made to Dcsaascdn.net and 4% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Instalco.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 211.5 kB (6%)

Content Size

3.4 MB

After Optimization

3.2 MB

In fact, the total size of Instalco.pl main page is 3.4 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. 40% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 157.3 kB

  • Original 177.7 kB
  • After minification 98.5 kB
  • After compression 20.4 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. This page needs HTML code to be minified as it can gain 79.2 kB, which is 45% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 157.3 kB or 89% of the original size.

Image Optimization

-2%

Potential reduce by 54.0 kB

  • Original 2.9 MB
  • After minification 2.8 MB

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. InstalCO images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 184 B

  • Original 267.6 kB
  • After minification 267.6 kB
  • After compression 267.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 88.4 kB
  • After minification 88.4 kB
  • After compression 88.4 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. Instalco.pl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 5 (22%)

Requests Now

23

After Optimization

18

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of InstalCO. 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 as a result speed up the page load time.

Accessibility Review

instalco.pl accessibility score

59

Accessibility Issues

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

Buttons do not have an accessible name

High

Form elements do not have associated labels

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

instalco.pl best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

instalco.pl SEO score

92

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

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Instalco.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 Instalco.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

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