Tools & Wizards About Us
books.google.cz screenshot

Report Summary

  • 94

    Performance

    Renders faster than
    93% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

books.google.cz

Knihy Google

Page Load Speed

616 ms in total

First Response

44 ms

Resources Loaded

452 ms

Page Rendered

120 ms

books.google.cz screenshot

About Website

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

Visit books.google.cz

Key Findings

We analyzed Books.google.cz page load time and found that the first response time was 44 ms and then it took 572 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

books.google.cz performance score

94

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

80/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.9 s

100/100

10%

Network Requests Diagram

books.google.cz

44 ms

books.google.cz

236 ms

rs=AA2YrTs33gabkwDr4JwYH8vF35mufGVgkg

87 ms

v1_8758f7bb.png

116 ms

googlelogo_color_272x92dp.png

51 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 33% of them (2 requests) were addressed to the original Books.google.cz, 17% (1 request) were made to Gstatic.com and 17% (1 request) were made to Ssl.gstatic.com. The less responsive or slowest element that took the longest time to load (236 ms) belongs to the original domain Books.google.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 170.4 kB (54%)

Content Size

316.6 kB

After Optimization

146.2 kB

  • HTML
  • Images

In fact, the total size of Books.google.cz main page is 316.6 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. Only 5% of websites need less resources to load. HTML takes 247.2 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 170.4 kB

  • Original 247.2 kB
  • After minification 247.2 kB
  • After compression 76.8 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 170.4 kB or 69% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 69.4 kB
  • After minification 69.4 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. Books Google images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • JavaScript

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Books Google. According to our analytics all requests are already optimized.

Network Requests Diagram

books.google.cz

books.google.cz

44 ms

books.google.cz

books.google.cz

236 ms

rs=AA2YrTs33gabkwDr4JwYH8vF35mufGVgkg

rs=AA2YrTs33gabkwDr4JwYH8vF35mufGVgkg

87 ms

v1_8758f7bb.png

v1_8758f7bb.png

116 ms

googlelogo_color_272x92dp.png

googlelogo_color_272x92dp.png

51 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

72 ms

Accessibility Review

books.google.cz accessibility score

85

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[role]s do not have all required [aria-*] attributes

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

books.google.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

books.google.cz SEO score

83

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

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Books.google.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Books.google.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

books.google.cz

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