3.1 sec in total
319 ms
1.9 sec
908 ms
Click here to check amazing 4 Books content for Italy. Otherwise, check out these important facts you probably never knew about 4books.com
With 4books you can improve yourself and your skills every day, by reading or listening to book write-ups, exclusive podcasts and the top news from around the world
Visit 4books.comWe analyzed 4books.com page load time and found that the first response time was 319 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
4books.com performance score
name
value
score
weighting
Value2.7 s
60/100
10%
Value6.2 s
11/100
25%
Value5.8 s
50/100
10%
Value300 ms
79/100
30%
Value0.116
85/100
15%
Value5.7 s
68/100
10%
319 ms
37 ms
47 ms
24 ms
30 ms
Our browser made a total of 75 requests to load all elements on the main page. We found that 51% of them (38 requests) were addressed to the original 4books.com, 39% (29 requests) were made to D2vkd9mgo8gxzn.cloudfront.net and 5% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (955 ms) relates to the external source D2vkd9mgo8gxzn.cloudfront.net.
Page size can be reduced by 201.4 kB (30%)
667.6 kB
466.1 kB
In fact, the total size of 4books.com main page is 667.6 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. 35% of websites need less resources to load. Images take 262.1 kB which makes up the majority of the site volume.
Potential reduce by 193.4 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 57.8 kB, which is 27% 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 193.4 kB or 91% of the original size.
Potential reduce by 6.5 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. 4 Books images are well optimized though.
Potential reduce by 1.3 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. This website has mostly compressed JavaScripts.
Potential reduce by 180 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. 4books.com has all CSS files already compressed.
Number of requests can be reduced by 26 (37%)
70
44
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 4 Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
en
319 ms
css
37 ms
bootstrap.min.css
47 ms
sweetalert2.min.css
24 ms
js.cookie.min.js
30 ms
yett.config.js
28 ms
yett.min.js
59 ms
analytics.js
37 ms
module_home.css
35 ms
email-decode.min.js
24 ms
jquery-3.3.1.min.js
36 ms
popper.min.js
31 ms
bootstrap.min.js
53 ms
bootstrap-notify.min.js
54 ms
sweetalert2.min.js
99 ms
firebase-app.js
27 ms
firebase-auth.js
36 ms
typewriter-effect.min.2.17.0.js
97 ms
howler.min.2.1.2.js
98 ms
module_home.js
632 ms
s1706120780074-endure.jpeg
360 ms
Logo_4books.svg
28 ms
small-logo.svg
16 ms
topbanner_new_en.jpg
480 ms
254984719de66c28a4a9.svg
404 ms
mobile_home_new_en.jpg
583 ms
mobile_the_update_new_en.jpg
612 ms
book-screen-mindset_en.jpg
482 ms
bfcde15104f881953b6e.svg
807 ms
book-screen-musk_en.jpg
936 ms
book-screen-atomic-habits_en.jpg
951 ms
apple_badge_en.svg
550 ms
google_badge_en.svg
559 ms
devices_new_537w_en.jpg
568 ms
to_add_primary.svg
580 ms
Review-app-store.png
592 ms
Review-play-store.png
590 ms
icon_4books.svg
601 ms
Logo_4books2.svg
603 ms
cookie.png
613 ms
Apple.svg
611 ms
Google.svg
620 ms
facebook.svg
628 ms
s1705503390209-what-happened-to-you.jpeg
330 ms
s1704298003478-the-rise-of-the-ultra-runners.jpeg
332 ms
s1704296205364-his-name-is-george-floyd.jpeg
324 ms
s1704293887126-the-relationship-cure.jpeg
330 ms
s1704293042493-make-peace-with-your-mind.jpeg
343 ms
s1704291224872-food-inc.jpeg
660 ms
s1703785316857-the-ends-of-the-world.jpeg
655 ms
crescita.svg
337 ms
psychology.svg
334 ms
investimenti.svg
350 ms
comunication.svg
347 ms
icon-creativity.svg
339 ms
strategia.svg
345 ms
leadership.svg
344 ms
time-management.svg
359 ms
mindfulness-happiness.svg
349 ms
salute-nutrizione.svg
663 ms
economy.svg
358 ms
science.svg
647 ms
societa-cultura.svg
658 ms
storia-filosofia.svg
365 ms
startup.svg
674 ms
negoziazione.svg
955 ms
biography.svg
660 ms
s1672831286103-sex.png
673 ms
s1672831533418-nature.png
662 ms
s1672831900380-sport.png
663 ms
s1672831713310-figli.png
669 ms
S6u9w4BMUTPHh50XSwiPHw3q5d0.woff
15 ms
S6u9w4BMUTPHh6UVSwiPHw3q5d0.woff
26 ms
S6uyw4BMUTPHjx4wWCWtFCc.woff
48 ms
S6u9w4BMUTPHh7USSwiPHw3q5d0.woff
48 ms
4books.com accessibility score
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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
4books.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
4books.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 4books.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that 4books.com 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.
4books.com
Open Graph description is not detected on the main page of 4 Books. 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: