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mastercard.cz screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

mastercard.cz

Mastercard - globální technologická společnost v oblasti platebních řešení

Page Load Speed

1.5 sec in total

First Response

232 ms

Resources Loaded

1.1 sec

Page Rendered

172 ms

mastercard.cz screenshot

About Website

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

Propojujeme a pomáháme vytvářet inkluzivní digitální ekonomiku, která umožňuje jednotlivcům, společnostem a vládám provádět bezpečné, jednoduché a dostupné transakce kdekoli na světě.

Visit mastercard.cz

Key Findings

We analyzed Mastercard.cz page load time and found that the first response time was 232 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

mastercard.cz performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value22.5 s

0/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value2,230 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value16.8 s

5/100

10%

Network Requests Diagram

mastercard.cz

232 ms

cz

155 ms

index.html

22 ms

global.css

22 ms

addthis_widget.js

56 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Mastercard.cz, 48% (28 requests) were made to Mastercard.com and 9% (5 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (232 ms) belongs to the original domain Mastercard.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 637.9 kB (58%)

Content Size

1.1 MB

After Optimization

457.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mastercard.cz main page is 1.1 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. Javascripts take 649.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 85.0 kB

  • Original 114.8 kB
  • After minification 99.8 kB
  • After compression 29.8 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 15.1 kB, which is 13% 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 85.0 kB or 74% of the original size.

Image Optimization

-11%

Potential reduce by 24.1 kB

  • Original 221.4 kB
  • After minification 197.3 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. Obviously, Mastercard needs image optimization as it can save up to 24.1 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-66%

Potential reduce by 430.5 kB

  • Original 649.0 kB
  • After minification 607.5 kB
  • After compression 218.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 430.5 kB or 66% of the original size.

CSS Optimization

-89%

Potential reduce by 98.3 kB

  • Original 110.1 kB
  • After minification 91.3 kB
  • After compression 11.8 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. Mastercard.cz needs all CSS files to be minified and compressed as it can save up to 98.3 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (48%)

Requests Now

54

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mastercard. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

mastercard.cz

mastercard.cz

232 ms

cz

cz

155 ms

index.html

index.html

22 ms

global.css

global.css

22 ms

addthis_widget.js

addthis_widget.js

56 ms

jquery-1.4.4.min.js

jquery-1.4.4.min.js

32 ms

jsapi

jsapi

45 ms

addons.js

addons.js

28 ms

core.js

core.js

27 ms

main.js

main.js

30 ms

gallery.js

gallery.js

28 ms

director.js

director.js

28 ms

navl_logo_mastercardcom.png

navl_logo_mastercardcom.png

27 ms

mc-creditcard.png

mc-creditcard.png

30 ms

mc-combocard.jpg

mc-combocard.jpg

30 ms

mc-debitcard.jpg

mc-debitcard.jpg

29 ms

home_understandingcredit.jpg

home_understandingcredit.jpg

30 ms

home_choosingacard.jpg

home_choosingacard.jpg

33 ms

home_usingacard.jpg

home_usingacard.jpg

44 ms

home_fraudprotection.jpg

home_fraudprotection.jpg

31 ms

rc-products.png

rc-products.png

29 ms

home_debit.jpg

home_debit.jpg

32 ms

home_standard.jpg

home_standard.jpg

33 ms

home_maestro.jpg

home_maestro.jpg

32 ms

MC_specials_1920x400.jpg

MC_specials_1920x400.jpg

183 ms

toutctaarrow_all.png

toutctaarrow_all.png

15 ms

Instagram-Icon-27.png

Instagram-Icon-27.png

16 ms

14 ms

arrows.png

arrows.png

151 ms

default+en.css

default+en.css

3 ms

default+en.I.js

default+en.I.js

9 ms

amc.js

amc.js

190 ms

sitecatalyst.js

sitecatalyst.js

103 ms

h1.js

h1.js

54 ms

300lo.json

300lo.json

83 ms

counter.5524cceca805eb4b9b2b.js

counter.5524cceca805eb4b9b2b.js

30 ms

sitemap.xml

sitemap.xml

185 ms

all.js

all.js

18 ms

Gfeeds

Gfeeds

58 ms

plusone.js

plusone.js

132 ms

social.gif

social.gif

49 ms

sh.8e5f85691f9aaa082472a194.html

sh.8e5f85691f9aaa082472a194.html

70 ms

505.js

505.js

93 ms

shares.json

shares.json

89 ms

0.jpg

0.jpg

8 ms

79 ms

like.php

like.php

141 ms

xd_arbiter.php

xd_arbiter.php

46 ms

xd_arbiter.php

xd_arbiter.php

57 ms

n99h

n99h

49 ms

p0dg

p0dg

47 ms

ric-close.png

ric-close.png

33 ms

bg1.png

bg1.png

29 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

11 ms

u.php

u.php

45 ms

qeKvIRsJabD.js

qeKvIRsJabD.js

52 ms

LVx-xkvaJ0b.png

LVx-xkvaJ0b.png

28 ms

omni_plugins.js

omni_plugins.js

13 ms

Accessibility Review

mastercard.cz accessibility score

83

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 have valid values

High

ARIA IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

mastercard.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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

mastercard.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mastercard.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Mastercard.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

mastercard.cz

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