Access coursebooks.co.in. CourseBooks-Buy Second Hand Course Books,Books no longer in print, eBooks, eComics, eMagazines Onlin...

name

value

score

weighting

FCP (First Contentful Paint)

Value9.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

0/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

coursebooks.co.in

873 ms

base.css

281 ms

ckeditor.css

146 ms

prettyPhoto.css

218 ms

superfish.css

156 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 59% of them (45 requests) were addressed to the original Coursebooks.co.in, 9% (7 requests) were made to Yceml.net and 8% (6 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (947 ms) belongs to the original domain Coursebooks.co.in.

Content Size

1.3 MB

After Optimization

324.5 kB

In fact, the total size of Coursebooks.co.in 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 812.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 34.5 kB

Original 43.1 kB
After minification 36.1 kB
After compression 8.6 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 7.0 kB, which is 16% 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 34.5 kB or 80% of the original size.

Image Optimization

-46%

Potential reduce by 7.5 kB

Original 16.2 kB
After minification 8.7 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, Course Books needs image optimization as it can save up to 7.5 kB or 46% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 568.6 kB

Original 812.2 kB
After minification 800.6 kB
After compression 243.6 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 568.6 kB or 70% of the original size.

CSS Optimization

-86%

Potential reduce by 403.9 kB

Original 467.5 kB
After minification 386.6 kB
After compression 63.6 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. Coursebooks.co.in needs all CSS files to be minified and compressed as it can save up to 403.9 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Course 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 16 to 1 for JavaScripts and from 27 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 interpretation of your content by users in different locales.

High

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

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 Coursebooks.co.in 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 Coursebooks.co.in 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

coursebooks.co.in

Open Graph data is detected on the main page of Course Books. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

CourseBooks-Buy Second Hand Course Books,Books no longer in print, eBooks, eComics, eMagazines Online

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

coursebooks.co.in

base.css

ckeditor.css

prettyPhoto.css

superfish.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

coursebooks.co.in

base.css

ckeditor.css

prettyPhoto.css

superfish.css

video-js.css

slicebox.css

nivo-slider.css

owl.carousel.css

justifiedGallery.min.css

animation.css

ui-dialog.css

jquery-jvectormap-2.0.2.css

lightbox.css

base-min.css

grids-min.css

grids-responsive.css

grids-custom.css

altgrid.css

modal.css

credentials.css

bs4embeddable.css

font-awesome-extensions.css

bootstrap.css

style.css

jquery-1.12.4.min.js

jquery-ui-1.12.1.min.js

i18n.js

imagesloaded.min.js

en.js

xregexp-all.min.js

jquery.jplayer.js

jplayer.playlist.min.js

jquery.asterion.utils.ui.js

jquery.asterion.link-intercept.js

galleria.js

spectrum.min.js

proMarket

asterion.js

font-awesome.min.css

spectrum.min.css

css

site-125361.js