Access vkol.cz. Vědecká knihovna v Olomouci

Report Summary

About Website

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

Vědecká knihovna v Olomouci je druhou nejstarší a třetí největší knihovnou svého druhu v České republice.

Visit vkol.cz

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value650 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0.017

100/100

15%

TTI (Time to Interactive)

Value7.1 s

51/100

10%

vkol.cz

375 ms

www.vkol.cz

630 ms

475 ms

styly-test.css

365 ms

jquery-1.3.2.min.js

500 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 95% of them (58 requests) were addressed to the original Vkol.cz, 3% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Toplist.cz. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Vkol.cz.

Content Size

656.6 kB

After Optimization

476.3 kB

In fact, the total size of Vkol.cz main page is 656.6 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. 30% of websites need less resources to load. Images take 437.7 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 21.3 kB

Original 28.5 kB
After minification 26.9 kB
After compression 7.2 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 21.3 kB or 75% of the original size.

Image Optimization

-4%

Potential reduce by 17.2 kB

Original 437.7 kB
After minification 420.4 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. Vkol images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 112.6 kB

Original 154.0 kB
After minification 128.9 kB
After compression 41.5 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 112.6 kB or 73% of the original size.

CSS Optimization

-80%

Potential reduce by 29.2 kB

Original 36.4 kB
After minification 29.6 kB
After compression 7.2 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. Vkol.cz needs all CSS files to be minified and compressed as it can save up to 29.2 kB or 80% of the original size.

Requests Now

After Optimization

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vkol. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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/).

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 Vkol.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 Vkol.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

vkol.cz

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Vědecká knihovna v Olomouci

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)