Report Summary

  • 36

    Performance

    Renders faster than
    57% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

semily.cz

Semily

Page Load Speed

4.5 sec in total

First Response

341 ms

Resources Loaded

3.7 sec

Page Rendered

393 ms

semily.cz screenshot

About Website

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

Oficiální stránky města Semily. Aktuální informace ze Semil a okolí, informace z radnice, ze sportu, kultury i informace pro turisty. Navštivte Semily - kraj dalekých rozhledů a hlubokých údolí!

Visit semily.cz

Key Findings

We analyzed Semily.cz page load time and found that the first response time was 341 ms and then it took 4.1 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

semily.cz performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value1,590 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

semily.cz

341 ms

www.semily.cz

1334 ms

zakladni.css

377 ms

voliviewer.css

246 ms

styly.css

489 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 82% of them (54 requests) were addressed to the original Semily.cz, 6% (4 requests) were made to Translate.googleapis.com and 5% (3 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Semily.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 484.3 kB (14%)

Content Size

3.5 MB

After Optimization

3.0 MB

In fact, the total size of Semily.cz main page is 3.5 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. 45% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 50.4 kB

  • Original 63.5 kB
  • After minification 62.4 kB
  • After compression 13.1 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 50.4 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 60.8 kB

  • Original 2.9 MB
  • After minification 2.8 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. Semily images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 319.0 kB

  • Original 461.0 kB
  • After minification 460.8 kB
  • After compression 142.0 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 319.0 kB or 69% of the original size.

CSS Optimization

-77%

Potential reduce by 54.1 kB

  • Original 70.4 kB
  • After minification 69.6 kB
  • After compression 16.4 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. Semily.cz needs all CSS files to be minified and compressed as it can save up to 54.1 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (45%)

Requests Now

60

After Optimization

33

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Semily. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

semily.cz accessibility score

93

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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>).

High

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

Best Practices

semily.cz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

semily.cz SEO score

82

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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 Semily.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 Semily.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 Semily. 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: