Tools & Wizards About Us
batteryshop.cz screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

batteryshop.cz

BatteryShop.cz - Baterie do notebooků, baterie do digitálních fotoaparátů, videokamer a aku nářadí

Page Load Speed

4.7 sec in total

First Response

819 ms

Resources Loaded

3.6 sec

Page Rendered

291 ms

About Website

Visit batteryshop.cz now to see the best up-to-date Battery Shop content for Czech Republic and also check out these interesting facts you probably never knew about batteryshop.cz

Batteryshop.cz - Nabízíme baterie do Vašich notebooků nebo baterie do digitálních fotoaparátů. Dále si můžete zakoupit baterie do videokamer a pokud budete potřebovat, tak i baterie do aku nářadí!

Visit batteryshop.cz

Key Findings

We analyzed Batteryshop.cz page load time and found that the first response time was 819 ms and then it took 3.9 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

batteryshop.cz performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

www.batteryshop.cz

819 ms

screen.css

225 ms

shop.js.asp

223 ms

shop.js

550 ms

ajax.js

345 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 59% of them (48 requests) were addressed to the original Batteryshop.cz, 5% (4 requests) were made to Platform.twitter.com and 4% (3 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (979 ms) belongs to the original domain Batteryshop.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 826.7 kB (65%)

Content Size

1.3 MB

After Optimization

437.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Batteryshop.cz main page is 1.3 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. 55% of websites need less resources to load. Javascripts take 847.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 214.6 kB

  • Original 284.5 kB
  • After minification 279.1 kB
  • After compression 69.9 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 214.6 kB or 75% of the original size.

Image Optimization

-17%

Potential reduce by 10.9 kB

  • Original 65.4 kB
  • After minification 54.5 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. Obviously, Battery Shop needs image optimization as it can save up to 10.9 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 545.7 kB

  • Original 847.9 kB
  • After minification 839.3 kB
  • After compression 302.1 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 545.7 kB or 64% of the original size.

CSS Optimization

-83%

Potential reduce by 55.5 kB

  • Original 66.9 kB
  • After minification 60.8 kB
  • After compression 11.3 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. Batteryshop.cz needs all CSS files to be minified and compressed as it can save up to 55.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 53 (68%)

Requests Now

78

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Battery Shop. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

batteryshop.cz accessibility score

63

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.

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

<frame> or <iframe> elements do not have a title

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

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

Best Practices

batteryshop.cz 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

batteryshop.cz SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    CS

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Batteryshop.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Czech. Our system also found out that Batteryshop.cz 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 Battery Shop. 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: