4.3 sec in total
654 ms
2 sec
1.6 sec
Visit 4books.it now to see the best up-to-date 4 Books content for Italy and also check out these interesting facts you probably never knew about 4books.it
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.itWe analyzed 4books.it page load time and found that the first response time was 654 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
4books.it performance score
name
value
score
weighting
Value8.8 s
0/100
10%
Value12.6 s
0/100
25%
Value24.3 s
0/100
10%
Value22,050 ms
0/100
30%
Value0.15
76/100
15%
Value48.9 s
0/100
10%
654 ms
84 ms
154 ms
215 ms
219 ms
Our browser made a total of 87 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original 4books.it, 29% (25 requests) were made to D2vkd9mgo8gxzn.cloudfront.net and 6% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source 4books.com.
Page size can be reduced by 248.4 kB (22%)
1.1 MB
874.6 kB
In fact, the total size of 4books.it main page is 1.1 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. 60% of websites need less resources to load. Images take 841.7 kB which makes up the majority of the site volume.
Potential reduce by 147.0 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 52.1 kB, which is 32% 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 147.0 kB or 89% of the original size.
Potential reduce by 94.0 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, 4 Books needs image optimization as it can save up to 94.0 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 675 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. This website has mostly compressed JavaScripts.
Potential reduce by 6.7 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. 4books.it has all CSS files already compressed.
Number of requests can be reduced by 37 (46%)
81
44
The browser has sent 81 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 23 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
4books.com
654 ms
bootstrap.css
84 ms
animate.min.css
154 ms
sweetalert2.css
215 ms
common.css
219 ms
css
96 ms
css
102 ms
swiper-bundle.8.1.4.min.css
222 ms
js.cookie.min.js
91 ms
yett.config.js
212 ms
yett.min.js
226 ms
chargebee.js
75 ms
sentry.min.js
233 ms
analytics.js
274 ms
app.css
349 ms
cards.css
278 ms
landing.css
277 ms
jquery-3.3.1.min.js
490 ms
popper.min.js
284 ms
bootstrap.min.js
524 ms
bootstrap-notify.min.js
487 ms
lottielighthtml.min.js
524 ms
sweetalert2.min.js
489 ms
common.js
521 ms
last.js
520 ms
firebase-app.js
79 ms
firebase-auth.js
85 ms
search.js
519 ms
typewriter-effect.min.2.17.0.js
520 ms
swiper-bundle.8.1.4.min.js
1103 ms
howler.min.2.1.2.js
611 ms
player-tabs.js
608 ms
home.js
611 ms
visitorlisten.js
611 ms
Logo_4books.svg
390 ms
small-logo.svg
443 ms
topbanner_new_en.jpg
859 ms
mobile_home_new_en.png
580 ms
mobile_the_update_new_en.png
981 ms
book-screen-mindset_en.png
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book-screen-musk_en.png
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book-screen-atomic-habits_en.png
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s1663918871788-brotopia.jpeg
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check_circle_primary.svg
495 ms
play_circle_big_primary.svg
548 ms
apple_badge_en.svg
565 ms
google_badge_en.svg
614 ms
devices_new_en.jpg
619 ms
play_circle_big_white.svg
636 ms
to_add_primary.svg
680 ms
icon_apple.png
688 ms
icon_android.png
705 ms
icon_4books.svg
749 ms
Logo_4books2.svg
759 ms
cookie.png
761 ms
Apple.svg
774 ms
s1663918423755-dove-sono-tutti-quanti.jpeg
474 ms
s1663917984566-practicing-mindfulness.jpeg
461 ms
s1663917536804-the-imagination-machine.jpeg
446 ms
s1663318740404-the-innovator-s-method.jpeg
465 ms
s1663317780250-il-divano-di-istanbul.jpeg
455 ms
s1663317197038-ice-age.jpeg
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s1663316105015-the-perfect-day-to-boss-up.jpeg
856 ms
crescita.svg
461 ms
psychology.svg
462 ms
investimenti.svg
467 ms
comunication.svg
473 ms
leadership.svg
464 ms
strategia.svg
470 ms
time-management.svg
474 ms
icon-creativity.svg
483 ms
startup.svg
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economy.svg
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science.svg
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negoziazione.svg
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mindfulness-happiness.svg
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salute-nutrizione.svg
494 ms
societa-cultura.svg
802 ms
storia-filosofia.svg
496 ms
biography.svg
495 ms
Google.svg
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facebook.svg
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S6u9w4BMUTPHh50XSwiPHw3q5d0.woff
41 ms
S6u9w4BMUTPHh6UVSwiPHw3q5d0.woff
77 ms
S6uyw4BMUTPHjx4wWCWtFCc.woff
100 ms
S6u9w4BMUTPHh7USSwiPHw3q5d0.woff
98 ms
wlp2gwHKFkZgtmSR3NB0oRJfbwhVIfFd3A.woff
100 ms
4books.it 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
List items (<li>) are not contained within <ul> or <ol> parent elements.
4books.it 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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
4books.it 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.it 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.it 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.it
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: