Access worldlibrary.org. World Public Library

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

4/100

25%

SI (Speed Index)

Value6.9 s

34/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

worldlibrary.org

504 ms

bootstrap.css

681 ms

animate.css

565 ms

bannerscollection_zoominout.css

246 ms

modernizr.js

592 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 16% of them (12 requests) were addressed to the original Worldlibrary.org, 64% (48 requests) were made to Read.images.worldlibrary.net and 17% (13 requests) were made to Ebook2.worldlibrary.net. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Read.images.worldlibrary.net.

Content Size

2.7 MB

After Optimization

1.7 MB

In fact, the total size of Worldlibrary.org main page is 2.7 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. 35% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 36.3 kB

Original 44.3 kB
After minification 38.2 kB
After compression 8.0 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 6.0 kB, which is 14% 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 36.3 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 52.0 kB

Original 1.5 MB
After minification 1.4 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. World Library images are well optimized though.

JavaScript Optimization

-76%

Potential reduce by 636.5 kB

Original 837.8 kB
After minification 660.3 kB
After compression 201.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 636.5 kB or 76% of the original size.

CSS Optimization

-86%

Potential reduce by 294.6 kB

Original 342.2 kB
After minification 293.1 kB
After compression 47.5 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. Worldlibrary.org needs all CSS files to be minified and compressed as it can save up to 294.6 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of World Library. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Worldlibrary.org 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 Worldlibrary.org 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

worldlibrary.org

Open Graph description is not detected on the main page of World Library. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

World Public Library

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

worldlibrary.org

bootstrap.css

animate.css

bannerscollection_zoominout.css

modernizr.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

worldlibrary.org

bootstrap.css

animate.css

bannerscollection_zoominout.css

modernizr.js

jquery1.8.3.js

bannerscollection_zoominout.js

wpl.css

font-awesome.min.css

bootstrap.js

jquery.inview.min.js

jquery.prettyPhoto.js

isotope.js

jquery.maximage.js

jquery.bxslider.min.js

appear.js

wpl.js

jquery-ui-1.10.4.custom.min.js

jquery-ui-1.10.4.custom.min.css

greybox.js

greybox.css

loader.gif

Phone_Beach.jpg

ReadingBringsUsTogether.jpg

pattern.png

02_opportune_full.jpg

slider-top-second.jpg

03_opportune_full.jpg

slider-top-4th.jpg

audiobooks-listen.jpg

zoom.png

ebooks.jpg

studends-int-man.jpg

facebook-white.png

mediatools.aspx

callout.jpg

callout-bottom.jpg

menu_bottom_top_bg.png

myriadpro-semibold_opentype-webfont.woff

fontawesome-webfont.woff

arrow_off.gif

8ldvc09.jpg

stars_5.0.jpg