Tools & Wizards About Us

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

teno.cz

TENO Internetový obchod - prodej a servis kancelářské a výpočetní techniky, papírenské zboží.

Page Load Speed

4.6 sec in total

First Response

1.1 sec

Resources Loaded

3.3 sec

Page Rendered

162 ms

About Website

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

Prodej a servis kancelářské a výpočetní techniky, papírenské zboží, každodenní rozvoz po Zlínském kraji zdarma. Internetový obchod, dodávka EET pokladních systémů, kancelářská technika, papírnictví a ...

Visit teno.cz

Key Findings

We analyzed Teno.cz page load time and found that the first response time was 1.1 sec and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

teno.cz performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

4/100

25%

SI (Speed Index)

Value7.9 s

22/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

www.teno.cz

1142 ms

prototype.js

486 ms

scriptaculous.js

431 ms

lightbox.js

527 ms

lightbox.css

433 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 77% of them (65 requests) were addressed to the original Teno.cz, 10% (8 requests) were made to Static.xx.fbcdn.net and 4% (3 requests) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Teno.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 556.1 kB (57%)

Content Size

982.9 kB

After Optimization

426.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Teno.cz main page is 982.9 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. 40% of websites need less resources to load. Javascripts take 498.9 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 64.3 kB

  • Original 75.2 kB
  • After minification 51.4 kB
  • After compression 10.9 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 23.8 kB, which is 32% 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 64.3 kB or 86% of the original size.

Image Optimization

-2%

Potential reduce by 6.0 kB

  • Original 253.1 kB
  • After minification 247.1 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. TENO images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 361.7 kB

  • Original 498.9 kB
  • After minification 431.2 kB
  • After compression 137.3 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 361.7 kB or 72% of the original size.

CSS Optimization

-80%

Potential reduce by 124.0 kB

  • Original 155.6 kB
  • After minification 141.6 kB
  • After compression 31.6 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. Teno.cz needs all CSS files to be minified and compressed as it can save up to 124.0 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (62%)

Requests Now

81

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TENO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

teno.cz accessibility score

83

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

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

teno.cz best practices score

50

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

teno.cz SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Teno.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed English language. Our system also found out that Teno.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

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