Report Summary

  • 69

    Performance

    Renders faster than
    81% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 54

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

sigma1868.cz

Čerpadla pro dům a zahradu a průmyslová čerpadla - SIGMA 1868 spol. s r.o.

Page Load Speed

4.5 sec in total

First Response

487 ms

Resources Loaded

3.8 sec

Page Rendered

237 ms

sigma1868.cz screenshot

About Website

Click here to check amazing SIGMA 1868 content. Otherwise, check out these important facts you probably never knew about sigma1868.cz

Čerpadla pro dům a zahradu a průmyslová čerpadla vyrábí a dodává SIGMA 1868 s.r.o. - SIGMA 1868 spol. s r.o.

Visit sigma1868.cz

Key Findings

We analyzed Sigma1868.cz page load time and found that the first response time was 487 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

sigma1868.cz performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.8 s

90/100

10%

Network Requests Diagram

sigma1868.cz

487 ms

www.sigma1868.cz

661 ms

jquery-1.2.6.min.js

516 ms

slimbox2.js

278 ms

jquery.metadata.min.js

305 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 94% of them (34 requests) were addressed to the original Sigma1868.cz, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Sigma1868.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 104.1 kB (14%)

Content Size

770.4 kB

After Optimization

666.4 kB

In fact, the total size of Sigma1868.cz main page is 770.4 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. 20% of websites need less resources to load. Images take 636.2 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 7.1 kB

  • Original 10.3 kB
  • After minification 9.6 kB
  • After compression 3.3 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 7.1 kB or 68% of the original size.

Image Optimization

-3%

Potential reduce by 19.5 kB

  • Original 636.2 kB
  • After minification 616.8 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. SIGMA 1868 images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 60.7 kB

  • Original 103.4 kB
  • After minification 102.4 kB
  • After compression 42.7 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 60.7 kB or 59% of the original size.

CSS Optimization

-82%

Potential reduce by 16.8 kB

  • Original 20.4 kB
  • After minification 15.0 kB
  • After compression 3.6 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. Sigma1868.cz needs all CSS files to be minified and compressed as it can save up to 16.8 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (15%)

Requests Now

34

After Optimization

29

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SIGMA 1868. 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

sigma1868.cz accessibility score

56

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 valid value for its [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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

sigma1868.cz best practices score

54

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Registers an unload listener

Low

Detected JavaScript libraries

SEO Factors

sigma1868.cz 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

    CS

  • Language Claimed

    CZ

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sigma1868.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed language. Our system also found out that Sigma1868.cz 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 SIGMA 1868. 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: