Access book.com.tw. 歡迎光臨博客來

book.com.tw screenshot

1

Performance

Renders faster than
19% of other websites
80

Accessibility

Visual factors better than
that of 49% of websites
92

Best Practices

More advanced features
available than in
80% of websites
82

SEO

Google-friendlier than
44% of websites

First Response

486 ms

Resources Loaded

7.5 sec

Page Rendered

3.7 sec

book.com.tw screenshot

About Website

Visit book.com.tw now to see the best up-to-date Book content for Taiwan and also check out these interesting facts you probably never knew about book.com.tw

博客來提供上百萬書籍、百貨、影音、設計、文具、美食、有機、美妝、服飾。網路書店有齊全的繁簡體外文書籍雜誌，購物網多樣性百貨設計商品滿足您購物需求。取貨安全方便，中午前訂7-11隔日取

Visit book.com.tw

Key Findings

We analyzed Book.com.tw page load time and found that the first response time was 486 ms and then it took 11.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value6.6 s

2/100

10%

LCP (Largest Contentful Paint)

Value76.6 s

0/100

25%

SI (Speed Index)

Value33.0 s

0/100

10%

TBT (Total Blocking Time)

Value3,440 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value1.03

2/100

15%

TTI (Time to Interactive)

Value77.8 s

0/100

10%

book.com.tw

486 ms

www.books.com.tw

1329 ms

css.css

90 ms

icon_01.css

96 ms

jquery-3.7.1.min.js

97 ms

Our browser made a total of 960 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Book.com.tw, 46% (442 requests) were made to Im1.book.com.tw and 43% (413 requests) were made to Im2.book.com.tw. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Mercury.books.com.tw.

Content Size

1.3 MB

After Optimization

736.7 kB

In fact, the total size of Book.com.tw 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. Only a small number of websites need less resources to load. HTML takes 622.3 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 543.6 kB

Original 622.3 kB
After minification 621.0 kB
After compression 78.7 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 543.6 kB or 87% of the original size.

Image Optimization

-2%

Potential reduce by 6.0 kB

Original 296.7 kB
After minification 290.7 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. Book images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 33.2 kB

Original 294.0 kB
After minification 293.9 kB
After compression 260.7 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 33.2 kB or 11% of the original size.

CSS Optimization

-6%

Potential reduce by 7.0 kB

Original 113.5 kB
After minification 113.5 kB
After compression 106.5 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. Book.com.tw has all CSS files already compressed.

Requests Now

955

After Optimization

890

The browser has sent 955 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 37 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

book.com.tw

486 ms

www.books.com.tw

1329 ms

css.css

90 ms

icon_01.css

96 ms

jquery-3.7.1.min.js

97 ms

jquery.timers-1.3.js

97 ms

aeil-3.5.0.js

97 ms

adv_log.js

587 ms

jquery.lazyload.min.js

98 ms

blazy.min.js

97 ms

uselazyload.js

585 ms

head.min.js

97 ms

pc_tool.js

591 ms

change_multi_mbn_wide.js

597 ms

ajax_product_show.js

611 ms

add_product.js

97 ms

switch_page.js

605 ms

countdown_muti_full.js

781 ms

save_fast_buy_process.js

779 ms

GA4_homepage_limit.js

786 ms

change_multi_tab.js

793 ms

ajax_web_show.js

808 ms

menu_compon.js

867 ms

header-www.js

95 ms

dailywords.js

997 ms

picturebox_manager.js

1005 ms

reset.min.css

14 ms

grid-1200.min.css

11 ms

header-v2.css

11 ms

bui.css

14 ms

module.css

17 ms

gtm.js

59 ms

js

47 ms

books_image_patcher.js

615 ms

app_shop_js.js

1015 ms

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169 ms

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icon-hashtag.png

12 ms

icon-board.png

24 ms

icon-booksbill.png

23 ms

svg-open-point.svg

20 ms

icon_P.svg

23 ms

icon_P_black.svg

24 ms

icon-hot.png

11 ms

br_vlrm1eqn

572 ms

br_warls105

597 ms

icon-video.png

5 ms

S4ex8Z7kUIQ

120 ms

qsKSbDOvaIc

541 ms

q6fsXi6XN1Q

541 ms

sp_footer.png

92 ms

www-player.css

425 ms

www-embed-player.js

480 ms

base.js

511 ms

analytics.js

375 ms

destination

560 ms

_bt.gif

1778 ms

getImage

331 ms

br_screen.min.js

272 ms

_bt.gif

1621 ms

_bt.gif

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_bt.gif

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_bt.gif

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ad_status.js

391 ms

OfRUkPbLLmIJHiz0sRQ6wXEqxeMXOYMNgt9OZuziQhg.js

293 ms

embed.js

166 ms

linkid.js

138 ms

id

45 ms

Create

392 ms

Create

549 ms

Create

557 ms

KFOmCnqEu92Fr1Mu4mxM.woff

390 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

392 ms

collect

379 ms

collect

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ga-audiences

200 ms

GenerateIT

117 ms

GenerateIT

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GenerateIT

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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 keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

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

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

Low

Ensure CSP is effective against XSS attacks

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

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

JA
Language Claimed

ZH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Book.com.tw can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed Chinese language. Our system also found out that Book.com.tw 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

book.com.tw

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