Tools & Wizards About Us
online-letaky.cz screenshot

Report Summary

  • 67

    Performance

    Renders faster than
    79% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

online-letaky.cz

let?ky hypermarket? a ak?n? let?ky prodejc? na jednom m?st?

Page Load Speed

4.4 sec in total

First Response

965 ms

Resources Loaded

2.6 sec

Page Rendered

793 ms

online-letaky.cz screenshot

About Website

Click here to check amazing Online Let A Ky content. Otherwise, check out these important facts you probably never knew about online-letaky.cz

Online-let?ky.cz V?m nab?z? let?ky hypermarket? a ak?n? let?ky supermarket?, prodejc? n?bytku, drogerie, elektra, obuvi, sportovn?ch pot?eb, atd. p?ehledn? na jednom m?st?. S n?mi ji? nep?ehl?dnete na...

Visit online-letaky.cz

Key Findings

We analyzed Online-letaky.cz page load time and found that the first response time was 965 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

online-letaky.cz performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

81/100

25%

SI (Speed Index)

Value4.4 s

73/100

10%

TBT (Total Blocking Time)

Value680 ms

43/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value6.6 s

58/100

10%

Network Requests Diagram

www.online-letaky.cz

965 ms

style.css

103 ms

cs_CZ

4 ms

show_ads.js

68 ms

show_ads_impl.js

154 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 63% of them (22 requests) were addressed to the original Online-letaky.cz, 11% (4 requests) were made to Pagead2.googlesyndication.com and 9% (3 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (965 ms) belongs to the original domain Online-letaky.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 45.9 kB (14%)

Content Size

332.2 kB

After Optimization

286.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Online-letaky.cz main page is 332.2 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. 30% of websites need less resources to load. Images take 188.3 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 30.3 kB

  • Original 37.1 kB
  • After minification 35.7 kB
  • After compression 6.8 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 30.3 kB or 82% of the original size.

Image Optimization

-8%

Potential reduce by 15.3 kB

  • Original 188.3 kB
  • After minification 173.0 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. Online Let A Ky images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 92 B

  • Original 105.4 kB
  • After minification 105.4 kB
  • After compression 105.3 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

-20%

Potential reduce by 284 B

  • Original 1.4 kB
  • After minification 1.4 kB
  • After compression 1.1 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. Online-letaky.cz needs all CSS files to be minified and compressed as it can save up to 284 B or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (19%)

Requests Now

31

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Online Let A Ky. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.online-letaky.cz

www.online-letaky.cz

965 ms

style.css

style.css

103 ms

cs_CZ

cs_CZ

4 ms

show_ads.js

show_ads.js

68 ms

show_ads_impl.js

show_ads_impl.js

154 ms

ga.js

ga.js

25 ms

poz.png

poz.png

107 ms

hlavicka.jpg

hlavicka.jpg

485 ms

foto-4b64bec43e116.jpg

foto-4b64bec43e116.jpg

218 ms

foto-4b6f49212ee18.jpg

foto-4b6f49212ee18.jpg

219 ms

foto-4b66f1e87d19c.jpg

foto-4b66f1e87d19c.jpg

220 ms

foto-4b65a0ac87ca7.jpg

foto-4b65a0ac87ca7.jpg

219 ms

foto-4b64bfe473de0.jpg

foto-4b64bfe473de0.jpg

219 ms

foto-4b659faa7c4a3.jpg

foto-4b659faa7c4a3.jpg

333 ms

foto-4b64bb549a5a2.jpg

foto-4b64bb549a5a2.jpg

355 ms

foto-4b65928dccc87.jpg

foto-4b65928dccc87.jpg

354 ms

foto-4b64bc757f9fb.jpg

foto-4b64bc757f9fb.jpg

353 ms

foto-4ba784943d5bf.jpg

foto-4ba784943d5bf.jpg

356 ms

foto-4b81819673898.jpg

foto-4b81819673898.jpg

390 ms

foto-4b6f4b7164c9b.jpg

foto-4b6f4b7164c9b.jpg

401 ms

foto-4b658fa824a53.jpg

foto-4b658fa824a53.jpg

400 ms

foto-4c69549f137fb.jpg

foto-4c69549f137fb.jpg

402 ms

foto-4b6595c5be8f4.jpg

foto-4b6595c5be8f4.jpg

458 ms

foto-4b659f7ef0dd5.jpg

foto-4b659f7ef0dd5.jpg

484 ms

nadp.png

nadp.png

493 ms

menu-p.png

menu-p.png

493 ms

__utm.gif

__utm.gif

27 ms

cookie.js

cookie.js

126 ms

integrator.js

integrator.js

116 ms

ads

ads

123 ms

ads

ads

99 ms

adsbygoogle.js

adsbygoogle.js

72 ms

sodar

sodar

47 ms

sodar2.js

sodar2.js

148 ms

zrt_lookup.html

zrt_lookup.html

34 ms

Accessibility Review

online-letaky.cz accessibility score

85

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

Best Practices

online-letaky.cz best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

online-letaky.cz SEO score

69

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Online-letaky.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 Online-letaky.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

online-letaky.cz

Open Graph description is not detected on the main page of Online Let A Ky. 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: