Access thebook.io. 더북(TheBook)

thebook.io screenshot

38

Performance

Renders faster than
57% of other websites
89

Accessibility

Visual factors better than
that of 71% of websites
75

Best Practices

More advanced features
available than in
35% of websites
86

SEO

Google-friendlier than
60% of websites

First Response

8 ms

Resources Loaded

6.6 sec

Page Rendered

241 ms

thebook.io screenshot

About Website

Visit thebook.io now to see the best up-to-date The Book content for South Korea and also check out these interesting facts you probably never knew about thebook.io

더북(TheBook): (주)도서출판 길벗에서 제공하는 IT 도서 열람 서비스입니다.

Visit thebook.io

Key Findings

We analyzed Thebook.io page load time and found that the first response time was 8 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value720 ms

41/100

30%

CLS (Cumulative Layout Shift)

Value0.082

94/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

thebook.io

8 ms

thebook.io

34 ms

icon

95 ms

material.indigo-pink.min.css

81 ms

angular-toastr.min.css

342 ms

Our browser made a total of 207 requests to load all elements on the main page. We found that 93% of them (192 requests) were addressed to the original Thebook.io, 1% (2 requests) were made to Code.getmdl.io and 1% (2 requests) were made to Cdn.rawgit.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Thebook.io.

Content Size

43.5 MB

After Optimization

39.2 MB

In fact, the total size of Thebook.io main page is 43.5 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 42.9 MB which makes up the majority of the site volume.

HTML Optimization

-94%

Potential reduce by 201.3 kB

Original 215.2 kB
After minification 162.3 kB
After compression 13.9 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 52.9 kB, which is 25% 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 201.3 kB or 94% of the original size.

Image Optimization

-9%

Potential reduce by 3.9 MB

Original 42.9 MB
After minification 39.0 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. The Book images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 79.9 kB

Original 242.6 kB
After minification 242.6 kB
After compression 162.7 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 79.9 kB or 33% of the original size.

CSS Optimization

-82%

Potential reduce by 121.9 kB

Original 148.4 kB
After minification 147.3 kB
After compression 26.6 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. Thebook.io needs all CSS files to be minified and compressed as it can save up to 121.9 kB or 82% of the original size.

Requests Now

201

After Optimization

184

The browser has sent 201 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Book. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 8 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

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

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

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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

KO
Language Claimed

KO
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thebook.io can be misinterpreted by Google and other search engines. Our service has detected that Korean is used on the page, and it matches the claimed language. Our system also found out that Thebook.io 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

thebook.io

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