Access topobrazy.cz. Moderní obrazy na plátně

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value6.9 s

34/100

10%

TBT (Total Blocking Time)

Value370 ms

71/100

30%

CLS (Cumulative Layout Shift)

Value0.469

18/100

15%

TTI (Time to Interactive)

Value10.3 s

24/100

10%

topobrazy.cz

380 ms

www.topobrazy.cz

618 ms

lib-min.css

96 ms

less-min.css

193 ms

js

52 ms

Our browser made a total of 95 requests to load all elements on the main page. We found that 58% of them (55 requests) were addressed to the original Topobrazy.cz, 32% (30 requests) were made to Lvcontent.net and 3% (3 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Lvcontent.net.

Content Size

800.4 kB

After Optimization

661.9 kB

In fact, the total size of Topobrazy.cz main page is 800.4 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. 40% of websites need less resources to load. Images take 504.1 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 66.5 kB

Original 82.9 kB
After minification 72.6 kB
After compression 16.4 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 10.3 kB, which is 12% 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 66.5 kB or 80% of the original size.

Image Optimization

-8%

Potential reduce by 39.8 kB

Original 504.1 kB
After minification 464.3 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. Top Obrazy images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 32.1 kB

Original 202.0 kB
After minification 202.0 kB
After compression 169.9 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 32.1 kB or 16% of the original size.

CSS Optimization

-1%

Potential reduce by 145 B

Original 11.5 kB
After minification 11.5 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. Topobrazy.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Top Obrazy. 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.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

CS
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Topobrazy.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Topobrazy.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

topobrazy.cz

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Moderní obrazy na plátně - TopObrazy.cz

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

topobrazy.cz

www.topobrazy.cz

lib-min.css

less-min.css

js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

topobrazy.cz

www.topobrazy.cz

lib-min.css

less-min.css

js

rc.js

js-concat.js

catalog_menu.js

normalize.css

lightbox.css

fbevents.js

recorder.js

K012549K150105.jpg

close.png

loading.gif

prev.png

next.png

logo.png

now-sales.png

16.jpg

17.jpg

19.jpg

20.jpg

21.jpg

22.jpg

23.jpg

24.jpg

29.jpg

30.jpg

31.jpg

32.jpg

35.jpg

38.jpg

41.jpg

25.jpg

26.jpg

27.jpg

28.jpg

34.jpg

42.jpg

45.jpg

46.jpg

47.jpg