Tools & Wizards About Us
mefistofeles.cz screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

mefistofeles.cz

Zlaté stránky - online telefonní seznam zdarma 2022 | Rexter.cz

Page Load Speed

3.8 sec in total

First Response

735 ms

Resources Loaded

2.7 sec

Page Rendered

368 ms

mefistofeles.cz screenshot

About Website

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

Podívejte se na soukromá telefonní čísla nebo katalog firem.✅ Vše na jednom místě díky Zlatým stránkám.

Visit mefistofeles.cz

Key Findings

We analyzed Mefistofeles.cz page load time and found that the first response time was 735 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

mefistofeles.cz performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

53/100

25%

SI (Speed Index)

Value7.5 s

27/100

10%

TBT (Total Blocking Time)

Value2,920 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.67

8/100

15%

TTI (Time to Interactive)

Value14.3 s

9/100

10%

Network Requests Diagram

zlate-stranky-online-telefonni-seznam_795.html

735 ms

export-obsah.php

109 ms

export-obsah.php

302 ms

css

32 ms

adsbygoogle.js

150 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Mefistofeles.cz, 13% (4 requests) were made to Pagead2.googlesyndication.com and 10% (3 requests) were made to Administrace.gto.cz. The less responsive or slowest element that took the longest time to load (796 ms) relates to the external source Administrace.gto.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 117.5 kB (18%)

Content Size

653.3 kB

After Optimization

535.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mefistofeles.cz main page is 653.3 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. 55% of websites need less resources to load. Javascripts take 459.0 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 40.3 kB

  • Original 54.9 kB
  • After minification 53.7 kB
  • After compression 14.6 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 40.3 kB or 73% of the original size.

Image Optimization

-0%

Potential reduce by 70 B

  • Original 139.2 kB
  • After minification 139.1 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. Mefistofeles images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 77.2 kB

  • Original 459.0 kB
  • After minification 459.0 kB
  • After compression 381.8 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 77.2 kB or 17% of the original size.

CSS Optimization

-18%

Potential reduce by 40 B

  • Original 218 B
  • After minification 218 B
  • After compression 178 B

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. Mefistofeles.cz needs all CSS files to be minified and compressed as it can save up to 40 B or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (25%)

Requests Now

28

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mefistofeles. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zlate-stranky-online-telefonni-seznam_795.html

zlate-stranky-online-telefonni-seznam_795.html

735 ms

export-obsah.php

export-obsah.php

109 ms

export-obsah.php

export-obsah.php

302 ms

css

css

32 ms

adsbygoogle.js

adsbygoogle.js

150 ms

gtm.js

gtm.js

152 ms

icon-ZH-White.svg

icon-ZH-White.svg

796 ms

facebook-header-ico.png

facebook-header-ico.png

772 ms

instagram-header-ico.png

instagram-header-ico.png

771 ms

logo.svg

logo.svg

232 ms

facebook-header-ico.png

facebook-header-ico.png

234 ms

instagram-header2.png

instagram-header2.png

389 ms

main-nav-gradient-bgr.png

main-nav-gradient-bgr.png

394 ms

box-heading-bgr.png

box-heading-bgr.png

392 ms

icons.svg

icons.svg

390 ms

zlate-stranky-590x391_590x391.jpg

zlate-stranky-590x391_590x391.jpg

392 ms

li-square.png

li-square.png

389 ms

crop-2065-telly-hodnoceni-a-zkusenosti-s-digitalni-televizi-prihlaseni_590x256.jpg

crop-2065-telly-hodnoceni-a-zkusenosti-s-digitalni-televizi-prihlaseni_590x256.jpg

524 ms

crop-1475-oborova-zdravotni-pojistovna-(ozp)-vita-karta-%E2%80%93-prispevky-a-vyhody_590x256.jpg

crop-1475-oborova-zdravotni-pojistovna-(ozp)-vita-karta-%E2%80%93-prispevky-a-vyhody_590x256.jpg

527 ms

crop-2175-stastnych-10_590x256.jpg

crop-2175-stastnych-10_590x256.jpg

672 ms

slotcar_library.js

slotcar_library.js

149 ms

show_ads_impl.js

show_ads_impl.js

491 ms

gothamnarrow-bold-webfont.woff

gothamnarrow-bold-webfont.woff

409 ms

js

js

62 ms

zrt_lookup.html

zrt_lookup.html

77 ms

ads

ads

520 ms

ads

ads

434 ms

print.css

print.css

101 ms

reactive_library.js

reactive_library.js

148 ms

ca-pub-9512252283894460

ca-pub-9512252283894460

87 ms

Accessibility Review

mefistofeles.cz accessibility score

100

Accessibility Issues

Best Practices

mefistofeles.cz best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

mefistofeles.cz SEO score

100

Search Engine Optimization Advices

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

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 Mefistofeles.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 Mefistofeles.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

mefistofeles.cz

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