Access uploads.worldlibrary.net. World Public Library

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

uploads.worldlibrary.net

646 ms

jquery-1.8.2.min.js

764 ms

globalwindowscripts_1_2.js

288 ms

jquery.jcarousel.css

281 ms

jquery-ui-1.9.1.custom.min.css

520 ms

Our browser made a total of 130 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Uploads.worldlibrary.net, 42% (54 requests) were made to Ebook2.worldlibrary.net and 25% (33 requests) were made to Read.images.worldlibrary.net. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Read.images.worldlibrary.net.

Content Size

1.3 MB

After Optimization

593.1 kB

In fact, the total size of Uploads.worldlibrary.net main page is 1.3 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. 50% of websites need less resources to load. Javascripts take 579.0 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 86.1 kB

Original 103.4 kB
After minification 97.1 kB
After compression 17.3 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 86.1 kB or 83% of the original size.

Image Optimization

-12%

Potential reduce by 55.2 kB

Original 442.0 kB
After minification 386.9 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, Uploads World Library needs image optimization as it can save up to 55.2 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 409.9 kB

Original 579.0 kB
After minification 532.0 kB
After compression 169.1 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 409.9 kB or 71% of the original size.

CSS Optimization

-85%

Potential reduce by 111.9 kB

Original 131.7 kB
After minification 96.8 kB
After compression 19.8 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. Uploads.worldlibrary.net needs all CSS files to be minified and compressed as it can save up to 111.9 kB or 85% of the original size.

Requests Now

129

After Optimization

The browser has sent 129 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uploads 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 21 to 1 for JavaScripts and from 14 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

High

robots.txt is not valid

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

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uploads.worldlibrary.net 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 Uploads.worldlibrary.net 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

uploads.worldlibrary.net

Open Graph description is not detected on the main page of Uploads 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

uploads.worldlibrary.net

jquery-1.8.2.min.js

globalwindowscripts_1_2.js

jquery.jcarousel.css

jquery-ui-1.9.1.custom.min.css

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

uploads.worldlibrary.net

jquery-1.8.2.min.js

globalwindowscripts_1_2.js

jquery.jcarousel.css

jquery-ui-1.9.1.custom.min.css

books.css

header.css

detail.css

site.css

profilelayout.css

jquery-ui-1.9.1.custom.min.js

core.js

core_plugin.js

autoscroll.js

books.js

utility_1_7.js

WebResource.axd

browser.css

greybox.js

greybox.css

WebResource.axd

style.css

style.css

style.css

obout_treeview2.css

ob_tree_2041.js

ob_events_2041.js

style.css

show_ads.js

bodyleft_center.jpg

logo.jpg

roundcorner_left_TabStrip1.gif

mid_Horizontal6.gif

roundcorner_mid_TabStrip1.gif

roundcorner_right_TabStrip1.gif

bg.gif

arrow.gif

s_bg.gif

body_rightcenter.jpg

left.gif

center.gif

button.png

right.gif