Tools & Wizards About Us
terastore.cz screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

terastore.cz

Repasované notebooky a počítače i nové zboží | Tera.cz

Page Load Speed

6 sec in total

First Response

309 ms

Resources Loaded

5.3 sec

Page Rendered

413 ms

terastore.cz screenshot

About Website

Click here to check amazing Tera Store content for Czech Republic. Otherwise, check out these important facts you probably never knew about terastore.cz

Prodáváme repasované notebooky, předváděcí i nové, dále nové i repasované počítače, Apple iPhony a další elektroniku. Vyberte si z široké nabídky!

Visit terastore.cz

Key Findings

We analyzed Terastore.cz page load time and found that the first response time was 309 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

terastore.cz performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value11.9 s

0/100

25%

SI (Speed Index)

Value7.1 s

32/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.18

67/100

15%

TTI (Time to Interactive)

Value17.7 s

4/100

10%

Network Requests Diagram

terastore.cz

309 ms

www.tera.cz

1349 ms

styles.css

29 ms

status_css.asp

449 ms

user.css

42 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Terastore.cz, 88% (79 requests) were made to Tera.cz and 2% (2 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (3 sec) relates to the external source Tera.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 171.8 kB (11%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Terastore.cz main page is 1.5 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. 70% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 118.6 kB

  • Original 142.1 kB
  • After minification 129.0 kB
  • After compression 23.5 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 118.6 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 52.3 kB

  • Original 1.1 MB
  • After minification 1.1 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. Tera Store images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 768 B

  • Original 173.5 kB
  • After minification 173.5 kB
  • After compression 172.8 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 167 B

  • Original 74.4 kB
  • After minification 74.4 kB
  • After compression 74.2 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. Terastore.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (20%)

Requests Now

83

After Optimization

66

  • Images
  • JavaScript
  • CSS

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tera Store. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

terastore.cz

terastore.cz

309 ms

www.tera.cz

www.tera.cz

1349 ms

styles.css

styles.css

29 ms

status_css.asp

status_css.asp

449 ms

user.css

user.css

42 ms

jquery.min.js

jquery.min.js

26 ms

jquery-ui.min.js

jquery-ui.min.js

41 ms

jquery-migrate-3.0.0.min.js

jquery-migrate-3.0.0.min.js

23 ms

css

css

52 ms

scripts.js

scripts.js

52 ms

strings_js.asp

strings_js.asp

426 ms

user.js

user.js

51 ms

email-decode.min.js

email-decode.min.js

5 ms

bg_20240826-min.png

bg_20240826-min.png

744 ms

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43 ms

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45 ms

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43 ms

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43 ms

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45 ms

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46 ms

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45 ms

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47 ms

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49 ms

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462 ms

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46 ms

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47 ms

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55 ms

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55 ms

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56 ms

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520 ms

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486 ms

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553 ms

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911 ms

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940 ms

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961 ms

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990 ms

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1017 ms

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1206 ms

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1347 ms

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1083 ms

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1424 ms

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1472 ms

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1503 ms

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1652 ms

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1689 ms

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1787 ms

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1884 ms

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1875 ms

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1932 ms

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2069 ms

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2133 ms

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1900 ms

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2300 ms

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2334 ms

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2361 ms

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2398 ms

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apple-macbook-pro-touchbar-16-late-2019_ig1333730.jpg

2562 ms

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2587 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

61 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

60 ms

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2963 ms

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2934 ms

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Simple-Line-Icons.ttf

2362 ms

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2479 ms

gtm.js

gtm.js

61 ms

sdk.js

sdk.js

20 ms

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sdk.js

7 ms

46 ms

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hp-elitebook-840-g6_ig1355355.jpg

2492 ms

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2564 ms

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2132 ms

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2109 ms

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2082 ms

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1903 ms

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1733 ms

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1716 ms

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1698 ms

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1676 ms

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1652 ms

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1591 ms

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1479 ms

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1873 ms

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1699 ms

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1460 ms

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1453 ms

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1314 ms

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1288 ms

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1210 ms

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1113 ms

Accessibility Review

terastore.cz accessibility score

96

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

Links do not have a discernible name

Best Practices

terastore.cz best practices score

67

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

terastore.cz 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

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Terastore.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Terastore.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

terastore.cz

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