Tools & Wizards About Us
numis.cz screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

numis.cz

Mince a bankovky z celého světa - Numis.cz - numismatický salón

Page Load Speed

2 sec in total

First Response

576 ms

Resources Loaded

1.2 sec

Page Rendered

203 ms

numis.cz screenshot

About Website

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

NUMIS - kamenná prodejna a eshop - prodej a nákup mincí a bankovek z celého světa

Visit numis.cz

Key Findings

We analyzed Numis.cz page load time and found that the first response time was 576 ms and then it took 1.4 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

numis.cz performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

74/100

25%

SI (Speed Index)

Value6.7 s

37/100

10%

TBT (Total Blocking Time)

Value410 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value4.4 s

84/100

10%

Network Requests Diagram

numis.cz

576 ms

default.css

226 ms

mince.jpg

337 ms

logo.gif

342 ms

bankovka.JPG

343 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 93% of them (13 requests) were addressed to the original Numis.cz, 7% (1 request) were made to Gringo.cz. The less responsive or slowest element that took the longest time to load (576 ms) belongs to the original domain Numis.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 17.8 kB (44%)

Content Size

40.8 kB

After Optimization

23.0 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Numis.cz main page is 40.8 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. Only 5% of websites need less resources to load. Images take 19.3 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 14.8 kB

  • Original 17.6 kB
  • After minification 7.6 kB
  • After compression 2.8 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 10.0 kB, which is 57% 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 14.8 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 19.3 kB
  • After minification 19.3 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. Numis images are well optimized though.

CSS Optimization

-77%

Potential reduce by 3.0 kB

  • Original 3.8 kB
  • After minification 2.9 kB
  • After compression 863 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. Numis.cz needs all CSS files to be minified and compressed as it can save up to 3.0 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Numis. According to our analytics all requests are already optimized.

Network Requests Diagram

numis.cz

numis.cz

576 ms

default.css

default.css

226 ms

mince.jpg

mince.jpg

337 ms

logo.gif

logo.gif

342 ms

bankovka.JPG

bankovka.JPG

343 ms

flag-cz.gif

flag-cz.gif

229 ms

flag-eng.gif

flag-eng.gif

328 ms

Sipka.gif

Sipka.gif

231 ms

email.gif

email.gif

129 ms

webhosting-88-31-21.gif

webhosting-88-31-21.gif

370 ms

pozadio3.jpg

pozadio3.jpg

215 ms

pozadi_lista.jpg

pozadi_lista.jpg

219 ms

pozadi_menu.jpg

pozadi_menu.jpg

222 ms

pozadi_text.jpg

pozadi_text.jpg

230 ms

Accessibility Review

numis.cz accessibility score

77

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

Form elements do not have associated labels

Best Practices

numis.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

SEO Factors

numis.cz SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    CS

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Numis.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Czech. Our system also found out that Numis.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

numis.cz

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