Tools & Wizards About Us
1book.co.jp screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

1book.co.jp

書店向けのFAX DM、FAX送信のことなら【 日本著者販促センター 】

Page Load Speed

5.4 sec in total

First Response

1.2 sec

Resources Loaded

4.1 sec

Page Rendered

116 ms

1book.co.jp screenshot

About Website

Click here to check amazing 1 Book content for Japan. Otherwise, check out these important facts you probably never knew about 1book.co.jp

書店向けFax DMを使って、多く書店に本を置いてもらいましょう。書店向けFaxDM・FAX送信は、日本著者販促センターにお任せください！書店向けFaxDMとは、ファックスを通じて本の案内を書店に送るサービス。あなたに代わってFaxが注文を取ってきます。

Visit 1book.co.jp

Key Findings

We analyzed 1book.co.jp page load time and found that the first response time was 1.2 sec and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

1book.co.jp performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value10.4 s

0/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value5.1 s

76/100

10%

Network Requests Diagram

1book.co.jp

1168 ms

style-site.css

489 ms

font.php

401 ms

bsn.Crossfader.js

416 ms

css.js

594 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 88% of them (37 requests) were addressed to the original 1book.co.jp, 10% (4 requests) were made to Google-analytics.com and 2% (1 request) were made to Client.12no3.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain 1book.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 11.0 kB (3%)

Content Size

315.8 kB

After Optimization

304.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 1book.co.jp main page is 315.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 274.5 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 8.0 kB

  • Original 11.8 kB
  • After minification 11.5 kB
  • After compression 3.8 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 8.0 kB or 68% of the original size.

Image Optimization

-0%

Potential reduce by 4 B

  • Original 274.5 kB
  • After minification 274.5 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. 1 Book images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 1.3 kB

  • Original 25.0 kB
  • After minification 25.0 kB
  • After compression 23.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-37%

Potential reduce by 1.7 kB

  • Original 4.5 kB
  • After minification 4.5 kB
  • After compression 2.8 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. 1book.co.jp needs all CSS files to be minified and compressed as it can save up to 1.7 kB or 37% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (29%)

Requests Now

41

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 1 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 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

1book.co.jp

1book.co.jp

1168 ms

style-site.css

style-site.css

489 ms

font.php

font.php

401 ms

bsn.Crossfader.js

bsn.Crossfader.js

416 ms

css.js

css.js

594 ms

urchin.js

urchin.js

7 ms

header_bg.gif

header_bg.gif

189 ms

header_logo.gif

header_logo.gif

512 ms

submenu_rss.gif

submenu_rss.gif

376 ms

submenu_home.gif

submenu_home.gif

377 ms

submenu_about.gif

submenu_about.gif

377 ms

submenu_shopinfo.gif

submenu_shopinfo.gif

386 ms

header_contact.gif

header_contact.gif

692 ms

header_tel.gif

header_tel.gif

699 ms

mainmenu_bg.gif

mainmenu_bg.gif

701 ms

mainmenu_cat01.gif

mainmenu_cat01.gif

767 ms

mainmenu_cat02.gif

mainmenu_cat02.gif

760 ms

mainmenu_cat03.gif

mainmenu_cat03.gif

897 ms

mainmenu_cat04.gif

mainmenu_cat04.gif

1016 ms

mainmenu_cat05.gif

mainmenu_cat05.gif

1024 ms

mainmenu_cat06.gif

mainmenu_cat06.gif

1092 ms

mainimage_01.jpg

mainimage_01.jpg

1616 ms

mainimage_02.jpg

mainimage_02.jpg

1598 ms

mainimage_03.jpg

mainimage_03.jpg

2065 ms

mainimage_04.jpg

mainimage_04.jpg

1841 ms

top_label_whyfaxdm.gif

top_label_whyfaxdm.gif

1413 ms

top_bg_whyfaxdm.jpg

top_bg_whyfaxdm.jpg

2232 ms

common_ancer_allow.gif

common_ancer_allow.gif

1763 ms

top_label_dmknowledge.gif

top_label_dmknowledge.gif

1962 ms

top_label_pubknowledge.gif

top_label_pubknowledge.gif

1991 ms

topmenu_plan.gif

topmenu_plan.gif

2087 ms

topmenu_example.gif

topmenu_example.gif

2228 ms

topmenu_faq.gif

topmenu_faq.gif

2298 ms

topside_label_fax.gif

topside_label_fax.gif

2386 ms

topside_icon_fax.gif

topside_icon_fax.gif

2449 ms

topside_btn_fax.gif

topside_btn_fax.gif

2609 ms

topside_label_news.gif

topside_label_news.gif

2573 ms

common_icon_bluedot.gif

common_icon_bluedot.gif

2615 ms

common_banner_epar.gif

common_banner_epar.gif

2645 ms

__utm.gif

__utm.gif

4 ms

ga.js

ga.js

7 ms

__utm.gif

__utm.gif

13 ms

Accessibility Review

1book.co.jp accessibility score

78

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

Best Practices

1book.co.jp best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

1book.co.jp SEO score

92

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 1book.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that 1book.co.jp 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

1book.co.jp

Open Graph description is not detected on the main page of 1 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: