Tools & Wizards About Us
eri.cz screenshot

Report Summary

  • 74

    Performance

    Renders faster than
    83% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

eri.cz

Připojení k internetu kdekoliv v ČR, včetně 5G - Český bezdrát

Page Load Speed

1.2 sec in total

First Response

332 ms

Resources Loaded

768 ms

Page Rendered

79 ms

eri.cz screenshot

About Website

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

Připojení k Internetu a LiveTV. Český bezdrát s.r.o. Streamujte, pracujte, hrajte hry a učte se s Eri Internetem ještě dnes! 21 let na trhu! Zřízení i do 3 pracovních dnů. Kvalitní servisní podpora.

Visit eri.cz

Key Findings

We analyzed Eri.cz page load time and found that the first response time was 332 ms and then it took 847 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

eri.cz performance score

74

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

eri.cz

332 ms

styles.css

221 ms

count.asp

212 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that 67% of them (2 requests) were addressed to the original Eri.cz, 33% (1 request) were made to Toplist.cz. The less responsive or slowest element that took the longest time to load (332 ms) belongs to the original domain Eri.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 kB (54%)

Content Size

2.6 kB

After Optimization

1.2 kB

  • HTML

In fact, the total size of Eri.cz main page is 2.6 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 2.6 kB which makes up the majority of the site volume.

HTML Optimization

-54%

Potential reduce by 1.4 kB

  • Original 2.6 kB
  • After minification 2.5 kB
  • After compression 1.2 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 1.4 kB or 54% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

  • Images

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Eri. According to our analytics all requests are already optimized.

Network Requests Diagram

eri.cz

eri.cz

332 ms

styles.css

styles.css

221 ms

count.asp

count.asp

212 ms

Accessibility Review

eri.cz accessibility score

85

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

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

eri.cz best practices score

58

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

eri.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

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Eri.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 Eri.cz main page’s claimed encoding is . 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

eri.cz

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