Tools & Wizards About Us
intrener.cz screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 43

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

intrener.cz

Výživové poradenství a profesionální trénink. Trénuj s námi! | INTRENER.cz

Page Load Speed

2.6 sec in total

First Response

436 ms

Resources Loaded

2 sec

Page Rendered

136 ms

intrener.cz screenshot

About Website

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

Online trénink s výživovým poradenstvím. Kondiční trénink. Poradenství pro sportovce. Spalujte tuky efektivně. Hubněte pohybem pod dohledem trenéra. Objevte chyby ve Vašem jídelníčku s výživovým porad...

Visit intrener.cz

Key Findings

We analyzed Intrener.cz page load time and found that the first response time was 436 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

intrener.cz performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

Network Requests Diagram

intrener.cz

436 ms

style.css

794 ms

prohlidka.css

799 ms

slimbox.css

804 ms

swfobject.js

823 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 76% of them (35 requests) were addressed to the original Intrener.cz, 4% (2 requests) were made to Twitter.com and 4% (2 requests) were made to X.com. The less responsive or slowest element that took the longest time to load (996 ms) belongs to the original domain Intrener.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 92.0 kB (23%)

Content Size

397.4 kB

After Optimization

305.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Intrener.cz main page is 397.4 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. 25% of websites need less resources to load. Images take 262.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 26.0 kB

  • Original 33.0 kB
  • After minification 23.0 kB
  • After compression 7.0 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 10.0 kB, which is 30% 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 26.0 kB or 79% of the original size.

Image Optimization

-17%

Potential reduce by 44.2 kB

  • Original 262.8 kB
  • After minification 218.5 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, INTRENER needs image optimization as it can save up to 44.2 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-22%

Potential reduce by 20.6 kB

  • Original 95.9 kB
  • After minification 95.6 kB
  • After compression 75.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 20.6 kB or 22% of the original size.

CSS Optimization

-20%

Potential reduce by 1.2 kB

  • Original 5.8 kB
  • After minification 5.8 kB
  • After compression 4.6 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. Intrener.cz needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (61%)

Requests Now

41

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of INTRENER. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

intrener.cz

intrener.cz

436 ms

style.css

style.css

794 ms

prohlidka.css

prohlidka.css

799 ms

slimbox.css

slimbox.css

804 ms

swfobject.js

swfobject.js

823 ms

embed.php

embed.php

824 ms

jquery-1.3.2.js

jquery-1.3.2.js

934 ms

jquery.scrollTo-min.js

jquery.scrollTo-min.js

890 ms

tisk_cviky.js

tisk_cviky.js

895 ms

gb_styles.css

gb_styles.css

900 ms

AJS.js

AJS.js

926 ms

AJS_fx.js

AJS_fx.js

925 ms

gb_scripts.js

gb_scripts.js

988 ms

md5.js

md5.js

992 ms

intrener.js

intrener.js

996 ms

jquery.min.js

jquery.min.js

11 ms

blogger.js

blogger.js

89 ms

intrener.json

intrener.json

86 ms

intrener.json

intrener.json

78 ms

blogger.js

blogger.js

98 ms

226km.jpg

226km.jpg

15 ms

bg-line.gif

bg-line.gif

102 ms

head.png

head.png

311 ms

but-sed-st.gif

but-sed-st.gif

98 ms

li-insportline.gif

li-insportline.gif

98 ms

ctverecek_75.png

ctverecek_75.png

96 ms

block-h2-light.gif

block-h2-light.gif

103 ms

komunita4.png

komunita4.png

195 ms

komunita3.png

komunita3.png

203 ms

button.gif

button.gif

194 ms

muj-vyzivovy-poradce.jpg

muj-vyzivovy-poradce.jpg

194 ms

mam_zajem.png

mam_zajem.png

195 ms

muj-online-trener.jpg

muj-online-trener.jpg

204 ms

muj-ctvrtletni-plan.jpg

muj-ctvrtletni-plan.jpg

204 ms

muj-osobni-trener.jpg

muj-osobni-trener.jpg

292 ms

1497960502_logo%20226%20km.jpg

1497960502_logo%20226%20km.jpg

292 ms

insportline.jpg

insportline.jpg

290 ms

konzultace-zdarma.jpg

konzultace-zdarma.jpg

305 ms

h3.gif

h3.gif

297 ms

footer.gif

footer.gif

374 ms

ga.js

ga.js

8 ms

__utm.gif

__utm.gif

11 ms

L.js

L.js

498 ms

all.js

all.js

11 ms

all.js

all.js

5 ms

print.css

print.css

103 ms

Accessibility Review

intrener.cz accessibility score

43

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

intrener.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

intrener.cz SEO score

69

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Intrener.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 Intrener.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

intrener.cz

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