Tools & Wizards About Us
sevt.cz screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

sevt.cz

SEVT.cz - tiskopisy, formuláře, učebnice, odborná literatura

Page Load Speed

3.5 sec in total

First Response

405 ms

Resources Loaded

2.8 sec

Page Rendered

307 ms

sevt.cz screenshot

About Website

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

Nejširší výběr školních a výtvarných potřeb. Specialista na kancelářské potřeby, tiskopisy, hry a stavebnice, učebnice, odbornou literaturu a beletrii.

Visit sevt.cz

Key Findings

We analyzed Sevt.cz page load time and found that the first response time was 405 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

sevt.cz performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value13.2 s

0/100

25%

SI (Speed Index)

Value9.0 s

15/100

10%

TBT (Total Blocking Time)

Value1,050 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value14.0 s

10/100

10%

Network Requests Diagram

sevt.cz

405 ms

www.sevt.cz

736 ms

GetResource.ashx

205 ms

api.js

36 ms

GetResource.ashx

307 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 51% of them (37 requests) were addressed to the original Sevt.cz, 8% (6 requests) were made to Img2.sevt.cz and 5% (4 requests) were made to Cdn.luigisbox.com. The less responsive or slowest element that took the longest time to load (809 ms) relates to the external source Client.smartform.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 514.4 kB (29%)

Content Size

1.8 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sevt.cz main page is 1.8 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. 60% of websites need less resources to load. Images take 683.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 173.2 kB

  • Original 205.2 kB
  • After minification 163.1 kB
  • After compression 31.9 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. This page needs HTML code to be minified as it can gain 42.0 kB, which is 20% 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 173.2 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 46.8 kB

  • Original 683.9 kB
  • After minification 637.1 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. SEVT images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 121.0 kB

  • Original 668.1 kB
  • After minification 661.1 kB
  • After compression 547.1 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 121.0 kB or 18% of the original size.

CSS Optimization

-85%

Potential reduce by 173.4 kB

  • Original 203.6 kB
  • After minification 165.2 kB
  • After compression 30.2 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. Sevt.cz needs all CSS files to be minified and compressed as it can save up to 173.4 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (41%)

Requests Now

68

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SEVT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sevt.cz

sevt.cz

405 ms

www.sevt.cz

www.sevt.cz

736 ms

GetResource.ashx

GetResource.ashx

205 ms

api.js

api.js

36 ms

GetResource.ashx

GetResource.ashx

307 ms

library.js

library.js

319 ms

LBX-233717.js

LBX-233717.js

20 ms

smartform.js

smartform.js

809 ms

WebResource.axd

WebResource.axd

409 ms

ScriptResource.axd

ScriptResource.axd

434 ms

ScriptResource.axd

ScriptResource.axd

582 ms

ScriptResource.axd

ScriptResource.axd

437 ms

js

js

437 ms

recaptcha__cs.js

recaptcha__cs.js

26 ms

jquery.min.js

jquery.min.js

17 ms

latest.js

latest.js

773 ms

main.js

main.js

532 ms

getSetReff.min.js

getSetReff.min.js

396 ms

f8900df257e406ad2830a3cdba387a68.js

f8900df257e406ad2830a3cdba387a68.js

18 ms

hotjar-3013966.js

hotjar-3013966.js

120 ms

click.js.php

click.js.php

348 ms

57143029610_136_136_nowm_fit.jpg

57143029610_136_136_nowm_fit.jpg

700 ms

40048200120_136_136_nowm_fit.jpg

40048200120_136_136_nowm_fit.jpg

544 ms

25040401920_136_136_nowm_fit.jpg

25040401920_136_136_nowm_fit.jpg

547 ms

725131991474_136_136_nowm_fit.png

725131991474_136_136_nowm_fit.png

664 ms

50158163840_136_136_nowm_fit.jpg

50158163840_136_136_nowm_fit.jpg

562 ms

25053337838_136_136_nowm_fit.jpg

25053337838_136_136_nowm_fit.jpg

585 ms

50340432200_136_136_nowm_fit.png

50340432200_136_136_nowm_fit.png

698 ms

logo-desktop.png

logo-desktop.png

270 ms

large-198-24_SEVT_PRUH_1140x106px_AKCNI-LETAK_3-5.jpg

large-198-24_SEVT_PRUH_1140x106px_AKCNI-LETAK_3-5.jpg

328 ms

large-260-24_SEVT_PRUH_1140x106px_ZK.jpg

large-260-24_SEVT_PRUH_1140x106px_ZK.jpg

349 ms

large-337-24_SEVT_PRUH_1140x106px_LETAK-KVETEN.jpg

large-337-24_SEVT_PRUH_1140x106px_LETAK-KVETEN.jpg

295 ms

334-23_SEVT__1140x106px__DARKOVE-POUKAZY_v1-JARO.jpg

334-23_SEVT__1140x106px__DARKOVE-POUKAZY_v1-JARO.jpg

570 ms

nabor-pruh.jpg

nabor-pruh.jpg

470 ms

doprava.png

doprava.png

422 ms

plneni.png

plneni.png

422 ms

otevreno.png

otevreno.png

449 ms

ikona-30dni.png

ikona-30dni.png

500 ms

apek.jpg

apek.jpg

524 ms

shop-roku-2023.png

shop-roku-2023.png

524 ms

footer-cards1.png

footer-cards1.png

552 ms

logo-eu.png

logo-eu.png

571 ms

logo-jpd.png

logo-jpd.png

605 ms

43016200_136_136_nowm_fit.jpg

43016200_136_136_nowm_fit.jpg

584 ms

58251129036_136_136_nowm_fit.png

58251129036_136_136_nowm_fit.png

694 ms

40659018274_136_136_nowm_fit.jpg

40659018274_136_136_nowm_fit.jpg

583 ms

autocomplete.js

autocomplete.js

35 ms

autocomplete.css

autocomplete.css

35 ms

sevt.js

sevt.js

56 ms

gtm.js

gtm.js

87 ms

modules.e5979922753cf3b8b069.js

modules.e5979922753cf3b8b069.js

56 ms

icons.png

icons.png

336 ms

248-23_SEVT_logo-SEVT_69-let__159x112px-1.png

248-23_SEVT_logo-SEVT_69-let__159x112px-1.png

336 ms

Heureka-shoproku-160x130.jpg

Heureka-shoproku-160x130.jpg

365 ms

commonIcons.png

commonIcons.png

403 ms

buttons.png

buttons.png

402 ms

miniCart.png

miniCart.png

429 ms

load-indicator.gif

load-indicator.gif

440 ms

slider-navigator.png

slider-navigator.png

440 ms

promoBoxesBg.png

promoBoxesBg.png

435 ms

footerBoxesBg.png

footerBoxesBg.png

482 ms

search.js

search.js

16 ms

411 ms

A870EB079B9029952568E771B6EA773B.cache.js

A870EB079B9029952568E771B6EA773B.cache.js

321 ms

latest.css

latest.css

96 ms

gjs.php

gjs.php

529 ms

sevt-cz

sevt-cz

21 ms

SmartForm.css

SmartForm.css

187 ms

uc.js

uc.js

20 ms

destination

destination

49 ms

rc.js

rc.js

690 ms

trending_queries

trending_queries

126 ms

api.luigisbox.com

api.luigisbox.com

244 ms

Accessibility Review

sevt.cz accessibility score

66

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.

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

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

Form elements do not have associated labels

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

sevt.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

sevt.cz SEO score

91

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

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 Sevt.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 Sevt.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

sevt.cz

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