Tools & Wizards About Us
nadvaha.cz screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    72% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

nadvaha.cz

Nadvaha.cz | jak zhubnout | dieta | jidelnicek | diety

Page Load Speed

2.7 sec in total

First Response

397 ms

Resources Loaded

2 sec

Page Rendered

239 ms

nadvaha.cz screenshot

About Website

Welcome to nadvaha.cz homepage info - get ready to check Nadvaha best content right away, or after learning these important things about nadvaha.cz

Nadváha (nadvaha.cz) - odborníci na diety radí na téma dieta, dietní strava, jídelníček, hubnutí zdravě, nadváha a obezita. Jak zhubnout pomohou i recepty na jídla vhodná během redukční diety.

Visit nadvaha.cz

Key Findings

We analyzed Nadvaha.cz page load time and found that the first response time was 397 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

nadvaha.cz performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value14.2 s

0/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value5.7 s

68/100

10%

Network Requests Diagram

nadvaha.cz

397 ms

www.nadvaha.cz

499 ms

stylesheet.css

200 ms

cloud-zoom.css

197 ms

jquery-1.6.1.min.js

292 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 80% of them (45 requests) were addressed to the original Nadvaha.cz, 11% (6 requests) were made to Apis.google.com and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (687 ms) belongs to the original domain Nadvaha.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 204.0 kB (17%)

Content Size

1.2 MB

After Optimization

970.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nadvaha.cz main page is 1.2 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. 45% of websites need less resources to load. Images take 850.1 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 25.9 kB

  • Original 33.3 kB
  • After minification 26.9 kB
  • After compression 7.4 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 6.4 kB, which is 19% 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 25.9 kB or 78% of the original size.

Image Optimization

-20%

Potential reduce by 166.4 kB

  • Original 850.1 kB
  • After minification 683.8 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, Nadvaha needs image optimization as it can save up to 166.4 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 6.4 kB

  • Original 264.0 kB
  • After minification 263.4 kB
  • After compression 257.6 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 5.3 kB

  • Original 26.6 kB
  • After minification 26.6 kB
  • After compression 21.3 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. Nadvaha.cz needs all CSS files to be minified and compressed as it can save up to 5.3 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (78%)

Requests Now

51

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nadvaha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nadvaha.cz

nadvaha.cz

397 ms

www.nadvaha.cz

www.nadvaha.cz

499 ms

stylesheet.css

stylesheet.css

200 ms

cloud-zoom.css

cloud-zoom.css

197 ms

jquery-1.6.1.min.js

jquery-1.6.1.min.js

292 ms

jquery-ui-1.8.16.custom.min.js

jquery-ui-1.8.16.custom.min.js

390 ms

jquery-ui-1.8.16.custom.css

jquery-ui-1.8.16.custom.css

205 ms

jquery.cookie.js

jquery.cookie.js

196 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

303 ms

jquery.fancybox-1.3.4.css

jquery.fancybox-1.3.4.css

303 ms

css

css

20 ms

tabs.js

tabs.js

301 ms

easyTooltip.js

easyTooltip.js

302 ms

common.js

common.js

400 ms

jQuery.equalHeights.js

jQuery.equalHeights.js

401 ms

cloud-zoom.1.0.2.js

cloud-zoom.1.0.2.js

401 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

402 ms

jscript_zjquery.anythingslider.js

jscript_zjquery.anythingslider.js

401 ms

jquery.cycle.js

jquery.cycle.js

490 ms

plusone.js

plusone.js

19 ms

L%C3%A9%C4%8Debn%C3%A1-edukace-ob%C3%A9zn%C3%ADch-vzd%C4%9Bl%C3%A1v%C3%A1n%C3%AD-zdrav%C3%AD-Leo%C5%A1-St%C5%99eda.jpg

L%C3%A9%C4%8Debn%C3%A1-edukace-ob%C3%A9zn%C3%ADch-vzd%C4%9Bl%C3%A1v%C3%A1n%C3%AD-zdrav%C3%AD-Leo%C5%A1-St%C5%99eda.jpg

499 ms

nadvaha-dieta-diety-hubnuti-chudnutie-zdrave-jak-zhubnout-banner-6-630x390.JPG

nadvaha-dieta-diety-hubnuti-chudnutie-zdrave-jak-zhubnout-banner-6-630x390.JPG

687 ms

main-bg.gif

main-bg.gif

306 ms

main-shining.png

main-shining.png

662 ms

up-arrow.png

up-arrow.png

106 ms

right-header-bg.gif

right-header-bg.gif

104 ms

tail-cart.gif

tail-cart.gif

104 ms

item-cart.png

item-cart.png

107 ms

shop-cart-button.gif

shop-cart-button.gif

204 ms

main-menu-bg.gif

main-menu-bg.gif

205 ms

button-search.png

button-search.png

206 ms

serch-bg.jpg

serch-bg.jpg

208 ms

trans.png

trans.png

297 ms

separator.gif

separator.gif

305 ms

menu-a.gif

menu-a.gif

305 ms

cat-heading.jpg

cat-heading.jpg

300 ms

line-1.gif

line-1.gif

304 ms

marker-1.gif

marker-1.gif

393 ms

nolines_minus.png

nolines_minus.png

398 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

9 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

55 ms

fastbutton

fastbutton

225 ms

box-heading.jpg

box-heading.jpg

361 ms

footer-bg.jpg

footer-bg.jpg

330 ms

twitter.png

twitter.png

335 ms

facebook.png

facebook.png

424 ms

google.png

google.png

428 ms

delicious.png

delicious.png

429 ms

youtube.png

youtube.png

431 ms

rss.png

rss.png

433 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

18 ms

postmessageRelay

postmessageRelay

32 ms

1413334672-postmessagerelay.js

1413334672-postmessagerelay.js

32 ms

rpc:shindig_random.js

rpc:shindig_random.js

10 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

4 ms

developers.google.com

developers.google.com

313 ms

Accessibility Review

nadvaha.cz accessibility score

76

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

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

nadvaha.cz best practices score

58

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

SEO Factors

nadvaha.cz SEO score

62

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

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nadvaha.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 Nadvaha.cz main page’s claimed encoding is iso-8859-1. 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

nadvaha.cz

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