Tools & Wizards About Us
silvarium.cz screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

silvarium.cz

Zprávy o lesnictví a dřevařství | Silvarium - lesnický a dřevařský zpravodajský web

Page Load Speed

7.5 sec in total

First Response

1.1 sec

Resources Loaded

5.2 sec

Page Rendered

1.3 sec

silvarium.cz screenshot

About Website

Welcome to silvarium.cz homepage info - get ready to check Silvarium best content for Czech Republic right away, or after learning these important things about silvarium.cz

Silvarium.cz - aktuální zpravy o lese, lesnictví, dřevařství pro lesníky a dřevaře i širokou veřejnost.

Visit silvarium.cz

Key Findings

We analyzed Silvarium.cz page load time and found that the first response time was 1.1 sec and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

silvarium.cz performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.174

69/100

15%

TTI (Time to Interactive)

Value21.5 s

1/100

10%

Network Requests Diagram

silvarium.cz

1088 ms

js

82 ms

js

123 ms

plg_scroll2top.css

198 ms

ionicons.min.css

283 ms

Our browser made a total of 155 requests to load all elements on the main page. We found that 74% of them (114 requests) were addressed to the original Silvarium.cz, 5% (7 requests) were made to Fonts.gstatic.com and 4% (6 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Silvarium.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.4 MB (17%)

Content Size

14.8 MB

After Optimization

12.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Silvarium.cz main page is 14.8 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. Only a small number of websites need less resources to load. Images take 14.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 71.3 kB

  • Original 87.9 kB
  • After minification 78.9 kB
  • After compression 16.6 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 71.3 kB or 81% of the original size.

Image Optimization

-16%

Potential reduce by 2.3 MB

  • Original 14.2 MB
  • After minification 11.9 MB

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, Silvarium needs image optimization as it can save up to 2.3 MB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-12%

Potential reduce by 34.8 kB

  • Original 300.3 kB
  • After minification 300.0 kB
  • After compression 265.5 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 34.8 kB or 12% of the original size.

CSS Optimization

-8%

Potential reduce by 14.7 kB

  • Original 182.4 kB
  • After minification 181.8 kB
  • After compression 167.7 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. Silvarium.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 59 (41%)

Requests Now

144

After Optimization

85

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 144 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Silvarium. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 34 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

silvarium.cz

silvarium.cz

1088 ms

js

js

82 ms

js

js

123 ms

plg_scroll2top.css

plg_scroll2top.css

198 ms

ionicons.min.css

ionicons.min.css

283 ms

simple-line-icons.min.css

simple-line-icons.min.css

59 ms

k2.css

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338 ms

style.css

style.css

335 ms

jcemediabox.min.css

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341 ms

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334 ms

bootstrap.css

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437 ms

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376 ms

uikit.min.css

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63 ms

slidenav.min.css

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template.css

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616 ms

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617 ms

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618 ms

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56 ms

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754 ms

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34 ms

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78 ms

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574 ms

nav.jquery.min.js

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573 ms

silvarium.js

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567 ms

system.css

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147 ms

DhZZ94-bhcU

DhZZ94-bhcU

590 ms

maxresdefault.jpg

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458 ms

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1063 ms

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1186 ms

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906 ms

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340 ms

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340 ms

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1015 ms

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1016 ms

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1016 ms

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903 ms

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1180 ms

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1179 ms

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969 ms

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1181 ms

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1190 ms

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1345 ms

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1178 ms

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1345 ms

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1466 ms

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1369 ms

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1346 ms

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1348 ms

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1368 ms

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1367 ms

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1366 ms

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1380 ms

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1460 ms

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1461 ms

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1465 ms

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1465 ms

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1468 ms

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1648 ms

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1563 ms

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1851 ms

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1746 ms

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1565 ms

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1364 ms

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22 ms

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84 ms

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135 ms

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129 ms

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130 ms

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267 ms

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1351 ms

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75 ms

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108 ms

base.js

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137 ms

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377 ms

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170 ms

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98 ms

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790 ms

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846 ms

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853 ms

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858 ms

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795 ms

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828 ms

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801 ms

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681 ms

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681 ms

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Create

Create

30 ms

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756 ms

id

id

12 ms

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754 ms

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603 ms

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604 ms

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604 ms

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682 ms

GenerateIT

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16 ms

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665 ms

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671 ms

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674 ms

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675 ms

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96 ms

Accessibility Review

silvarium.cz accessibility score

90

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

Links do not have a discernible name

Best Practices

silvarium.cz best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

silvarium.cz SEO score

99

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

High

Tap targets are not sized appropriately

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 Silvarium.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 Silvarium.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

silvarium.cz

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