Tools & Wizards About Us
federmann.cz screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

federmann.cz

Hi-FI svět - Titulní strana

Page Load Speed

7.2 sec in total

First Response

407 ms

Resources Loaded

5.6 sec

Page Rendered

1.2 sec

federmann.cz screenshot

About Website

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

HiFi,Web převážně vážně nejen o zesilovačích a počítačích. Hi-Fi svět, Hi-Fi world, Hi-Fi svět - ISSN 1803-733X, federmann, Zesilovač, Audio, Amplifier, Preamplifier, Amp, Preamp

Visit federmann.cz

Key Findings

We analyzed Federmann.cz page load time and found that the first response time was 407 ms and then it took 6.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

federmann.cz performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value610 ms

49/100

30%

CLS (Cumulative Layout Shift)

Value1.245

1/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

Network Requests Diagram

federmann.cz

407 ms

www.federmann.cz

1858 ms

system.css

143 ms

position.css

266 ms

layout.css

274 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 71% of them (48 requests) were addressed to the original Federmann.cz, 10% (7 requests) were made to Tpc.googlesyndication.com and 9% (6 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Federmann.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 568.7 kB (27%)

Content Size

2.1 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Federmann.cz main page is 2.1 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 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 46.1 kB

  • Original 57.4 kB
  • After minification 51.5 kB
  • After compression 11.3 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 46.1 kB or 80% of the original size.

Image Optimization

-10%

Potential reduce by 142.3 kB

  • Original 1.4 MB
  • After minification 1.3 MB

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. Federmann images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 318.9 kB

  • Original 526.4 kB
  • After minification 520.2 kB
  • After compression 207.5 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 318.9 kB or 61% of the original size.

CSS Optimization

-84%

Potential reduce by 61.4 kB

  • Original 73.0 kB
  • After minification 45.7 kB
  • After compression 11.5 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. Federmann.cz needs all CSS files to be minified and compressed as it can save up to 61.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (46%)

Requests Now

65

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Federmann. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

federmann.cz

federmann.cz

407 ms

www.federmann.cz

www.federmann.cz

1858 ms

system.css

system.css

143 ms

position.css

position.css

266 ms

layout.css

layout.css

274 ms

general.css

general.css

271 ms

personal.css

personal.css

279 ms

jquery.min.js

jquery.min.js

410 ms

jquery-noconflict.js

jquery-noconflict.js

280 ms

jquery-migrate.min.js

jquery-migrate.min.js

395 ms

caption.js

caption.js

401 ms

mootools-core.js

mootools-core.js

562 ms

core.js

core.js

403 ms

mootools-more.js

mootools-more.js

681 ms

md_stylechanger.js

md_stylechanger.js

524 ms

hide.js

hide.js

532 ms

html5fallback.js

html5fallback.js

536 ms

adsbygoogle.js

adsbygoogle.js

5 ms

system.css

system.css

401 ms

bg2.png

bg2.png

195 ms

personal2.png

personal2.png

954 ms

header-bg.gif

header-bg.gif

192 ms

button.png

button.png

194 ms

www.federmann.cz

www.federmann.cz

215 ms

rating_star_blank.png

rating_star_blank.png

191 ms

558_schema.png

558_schema.png

384 ms

HQQF-55-558_spodek.jpg

HQQF-55-558_spodek.jpg

689 ms

HQQF-55-558_vrch.jpg

HQQF-55-558_vrch.jpg

546 ms

559_schema.png

559_schema.png

266 ms

HQQF-55-559_spodek.jpg

HQQF-55-559_spodek.jpg

767 ms

HQQF-55-559_vrch.jpg

HQQF-55-559_vrch.jpg

917 ms

HQQF-55-900.gif

HQQF-55-900.gif

2475 ms

HQQF-55-506W-Gold.jpg

HQQF-55-506W-Gold.jpg

689 ms

image437.gif

image437.gif

822 ms

GB.jpg

GB.jpg

823 ms

DE.jpg

DE.jpg

897 ms

FR.jpg

FR.jpg

953 ms

CN.jpg

CN.jpg

958 ms

JP.jpg

JP.jpg

1027 ms

RU.jpg

RU.jpg

1046 ms

SK.jpg

SK.jpg

1070 ms

PL.jpg

PL.jpg

1084 ms

livemarks.png

livemarks.png

1088 ms

TitilliumMaps29L002.otf

TitilliumMaps29L002.otf

1146 ms

ca-pub-5302034901472367.js

ca-pub-5302034901472367.js

133 ms

zrt_lookup.html

zrt_lookup.html

155 ms

show_ads_impl.js

show_ads_impl.js

66 ms

karo.gif

karo.gif

1147 ms

arrow2_grey.png

arrow2_grey.png

1153 ms

footer.jpg

footer.jpg

1129 ms

ads

ads

423 ms

tabs_back.png

tabs_back.png

1040 ms

osd.js

osd.js

19 ms

ads

ads

352 ms

ads

ads

322 ms

ads

ads

299 ms

m_js_controller.js

m_js_controller.js

45 ms

abg.js

abg.js

69 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

147 ms

1882997339563132390

1882997339563132390

48 ms

15001395348336356938

15001395348336356938

120 ms

17301260476691958122

17301260476691958122

107 ms

favicon

favicon

184 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

87 ms

s

s

79 ms

x_button_blue2.png

x_button_blue2.png

11 ms

E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js

E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js

5 ms

print.css

print.css

135 ms

Accessibility Review

federmann.cz accessibility score

65

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

federmann.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

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

federmann.cz SEO score

87

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

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

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Federmann.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 Federmann.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

federmann.cz

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