Tools & Wizards About Us
jabbim.cz screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

jabbim.cz

Jabbim - XMPP/Jabber server - komunikační služba

Page Load Speed

3.7 sec in total

First Response

988 ms

Resources Loaded

2.6 sec

Page Rendered

105 ms

jabbim.cz screenshot

About Website

Welcome to jabbim.cz homepage info - get ready to check Jabbim best content for Russia right away, or after learning these important things about jabbim.cz

Jabbim.cz - XMPP/Jabber server - Veřejný Jabber server s řadou zajímavých XMPP/Jabber transportů - komunikujte zdarma a svobodně!

Visit jabbim.cz

Key Findings

We analyzed Jabbim.cz page load time and found that the first response time was 988 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

jabbim.cz performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value1,110 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value12.0 s

16/100

10%

Network Requests Diagram

www.jabbim.cz

988 ms

style.css

326 ms

niftyCorners.css

331 ms

wizard.css

332 ms

nifty.js

441 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 51% of them (23 requests) were addressed to the original Jabbim.cz, 24% (11 requests) were made to Platform.twitter.com and 4% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (988 ms) belongs to the original domain Jabbim.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 50.7 kB (50%)

Content Size

101.9 kB

After Optimization

51.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jabbim.cz main page is 101.9 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. 15% of websites need less resources to load. Javascripts take 60.4 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 10.1 kB

  • Original 16.4 kB
  • After minification 15.6 kB
  • After compression 6.3 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 10.1 kB or 62% of the original size.

Image Optimization

-1%

Potential reduce by 77 B

  • Original 14.4 kB
  • After minification 14.3 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. Jabbim images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 32.3 kB

  • Original 60.4 kB
  • After minification 59.7 kB
  • After compression 28.2 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 32.3 kB or 53% of the original size.

CSS Optimization

-77%

Potential reduce by 8.3 kB

  • Original 10.7 kB
  • After minification 8.6 kB
  • After compression 2.5 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. Jabbim.cz needs all CSS files to be minified and compressed as it can save up to 8.3 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (71%)

Requests Now

42

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jabbim. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.jabbim.cz

www.jabbim.cz

988 ms

style.css

style.css

326 ms

niftyCorners.css

niftyCorners.css

331 ms

wizard.css

wizard.css

332 ms

nifty.js

nifty.js

441 ms

final.js

final.js

332 ms

brand

brand

22 ms

brandjs.js

brandjs.js

13 ms

user.js

user.js

335 ms

ga.js

ga.js

39 ms

main.js

main.js

63 ms

btn_donateCC_LG.gif

btn_donateCC_LG.gif

51 ms

donate-wide-yellow.png

donate-wide-yellow.png

494 ms

jabbim.gif

jabbim.gif

220 ms

tab_left_top.gif

tab_left_top.gif

111 ms

tab_right_top.gif

tab_right_top.gif

114 ms

cz.png

cz.png

114 ms

en.png

en.png

114 ms

pl.png

pl.png

136 ms

navigation.jpg

navigation.jpg

320 ms

bullet-navigation.gif

bullet-navigation.gif

213 ms

bullet-navigation-sub.gif

bullet-navigation-sub.gif

212 ms

main.gif

main.gif

213 ms

bullet.gif

bullet.gif

223 ms

bullet-headline.gif

bullet-headline.gif

318 ms

branding.png

branding.png

44 ms

widgets.js

widgets.js

100 ms

footer.gif

footer.gif

316 ms

bullet-tools.gif

bullet-tools.gif

316 ms

bullet-company.gif

bullet-company.gif

314 ms

__utm.gif

__utm.gif

17 ms

asset_composer.js

asset_composer.js

42 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

59 ms

settings

settings

94 ms

timeline.e108540dddc96e4b707f5cf259a582d7.js

timeline.e108540dddc96e4b707f5cf259a582d7.js

22 ms

jabbim

jabbim

73 ms

niftyPrint.css

niftyPrint.css

111 ms

polyfills-3b821eda8863adcc4a4b.js

polyfills-3b821eda8863adcc4a4b.js

22 ms

runtime-a697c5a1ae32bd7e4d42.js

runtime-a697c5a1ae32bd7e4d42.js

46 ms

modules.20f98d7498a59035a762.js

modules.20f98d7498a59035a762.js

89 ms

main-fd9ef5eb169057cda26d.js

main-fd9ef5eb169057cda26d.js

73 ms

_app-88bf420a57d49e33be53.js

_app-88bf420a57d49e33be53.js

83 ms

%5BscreenName%5D-c33f0b02841cffc3e9b4.js

%5BscreenName%5D-c33f0b02841cffc3e9b4.js

84 ms

_buildManifest.js

_buildManifest.js

86 ms

_ssgManifest.js

_ssgManifest.js

89 ms

Accessibility Review

jabbim.cz accessibility score

68

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

Form elements do not have associated labels

Best Practices

jabbim.cz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

jabbim.cz SEO score

67

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 Jabbim.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 Jabbim.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

jabbim.cz

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