Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

abchistory.cz

ResearchWriter.cz • Rešerše a psaní - Historickému bádání dáváme praktickou hodnotu.

Page Load Speed

32.4 sec in total

First Response

4.9 sec

Resources Loaded

26.3 sec

Page Rendered

1.2 sec

abchistory.cz screenshot

About Website

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

Historickému bádání dáváme praktickou hodnotu.

Visit abchistory.cz

Key Findings

We analyzed Abchistory.cz page load time and found that the first response time was 4.9 sec and then it took 27.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 16 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

abchistory.cz performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.116

85/100

15%

TTI (Time to Interactive)

Value8.9 s

34/100

10%

Network Requests Diagram

index.html

4885 ms

jspngfix.js

278 ms

wpstyles.css

268 ms

wp764a97ca_06.jpg

17346 ms

wp588bd4fc_05_06.jpg

10652 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that all of those requests were addressed to Abchistory.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Abchistory.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 43.5 kB (56%)

Content Size

77.5 kB

After Optimization

34.0 kB

In fact, the total size of Abchistory.cz main page is 77.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. HTML takes 43.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 34.0 kB

  • Original 43.9 kB
  • After minification 43.6 kB
  • After compression 9.8 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 34.0 kB or 78% of the original size.

Image Optimization

-22%

Potential reduce by 6.7 kB

  • Original 30.1 kB
  • After minification 23.4 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. Obviously, Abchistory needs image optimization as it can save up to 6.7 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-44%

Potential reduce by 260 B

  • Original 593 B
  • After minification 593 B
  • After compression 333 B

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 260 B or 44% of the original size.

CSS Optimization

-82%

Potential reduce by 2.5 kB

  • Original 3.0 kB
  • After minification 2.6 kB
  • After compression 543 B

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. Abchistory.cz needs all CSS files to be minified and compressed as it can save up to 2.5 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (81%)

Requests Now

26

After Optimization

5

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Abchistory. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

abchistory.cz accessibility score

93

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.

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

abchistory.cz best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

abchistory.cz SEO score

100

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

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 Abchistory.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 Abchistory.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 Abchistory. 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: