Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 0

    Accessibility

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 0

    SEO

kalvos.cz

Kalendáře 2024 | Fotodárky z vlastních fotografií | Kalendáře z fotek | Kalvos

Page Load Speed

4.6 sec in total

First Response

330 ms

Resources Loaded

3.9 sec

Page Rendered

390 ms

kalvos.cz screenshot

About Website

Visit kalvos.cz now to see the best up-to-date Kalvos content for Czech Republic and also check out these interesting facts you probably never knew about kalvos.cz

Kalendáře a diáře pro rok 2024. Výroba nástěnných a stolní kalendářů z vlastních fotografií nebo s logem. Motivy vlastní, příroda, automobily a mnoho dalších.

Visit kalvos.cz

Key Findings

We analyzed Kalvos.cz page load time and found that the first response time was 330 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster. This domain responded with an error, which can significantly jeopardize Kalvos.cz rating and web reputation

Performance Metrics

kalvos.cz performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.4 s

2/100

10%

LCP (Largest Contentful Paint)

Value21.0 s

0/100

25%

SI (Speed Index)

Value24.9 s

0/100

10%

TBT (Total Blocking Time)

Value21,470 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.058

98/100

15%

TTI (Time to Interactive)

Value39.7 s

0/100

10%

Network Requests Diagram

kalvos.cz

330 ms

www.kalvos.cz

1221 ms

validator.js

524 ms

bootstrap.css

859 ms

bootstrap-theme.min.css

551 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 84% of them (46 requests) were addressed to the original Kalvos.cz, 4% (2 requests) were made to Maxcdn.bootstrapcdn.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Kalvos.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 368.4 kB (15%)

Content Size

2.5 MB

After Optimization

2.2 MB

In fact, the total size of Kalvos.cz main page is 2.5 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. 25% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 38.4 kB

  • Original 44.7 kB
  • After minification 28.5 kB
  • After compression 6.3 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 16.2 kB, which is 36% 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 38.4 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 20.8 kB

  • Original 2.1 MB
  • After minification 2.0 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. Kalvos images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 152.7 kB

  • Original 241.2 kB
  • After minification 222.9 kB
  • After compression 88.5 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 152.7 kB or 63% of the original size.

CSS Optimization

-85%

Potential reduce by 156.5 kB

  • Original 184.1 kB
  • After minification 159.4 kB
  • After compression 27.6 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. Kalvos.cz needs all CSS files to be minified and compressed as it can save up to 156.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (21%)

Requests Now

48

After Optimization

38

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kalvos. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Best Practices

kalvos.cz best practices score

67

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

Page has valid source maps

SEO Factors

kalvos.cz SEO score

0

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 Kalvos.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 Kalvos.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 Kalvos. 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: