Tools & Wizards About Us
tsubasabunko.jp screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

tsubasabunko.jp

角川つばさ文庫

Page Load Speed

9.8 sec in total

First Response

1.2 sec

Resources Loaded

7.6 sec

Page Rendered

989 ms

tsubasabunko.jp screenshot

About Website

Visit tsubasabunko.jp now to see the best up-to-date Tsubasabunko content for Japan and also check out these interesting facts you probably never knew about tsubasabunko.jp

ひらけば、どこへでも。／KADOKAWAが発行する児童書レーベル、角川つばさ文庫の公式サイトです。おすすめの最新情報をおとどけします！

Visit tsubasabunko.jp

Key Findings

We analyzed Tsubasabunko.jp page load time and found that the first response time was 1.2 sec and then it took 8.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

tsubasabunko.jp performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value52.4 s

0/100

25%

SI (Speed Index)

Value28.8 s

0/100

10%

TBT (Total Blocking Time)

Value5,710 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value43.6 s

0/100

10%

Network Requests Diagram

tsubasabunko.jp

1205 ms

style.css

512 ms

vendor.chunk.js

1627 ms

bundle.js

541 ms

gtm.js

152 ms

Our browser made a total of 216 requests to load all elements on the main page. We found that 69% of them (149 requests) were addressed to the original Tsubasabunko.jp, 5% (11 requests) were made to Youtube.com and 5% (11 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Tsubasabunko.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 475.2 kB (6%)

Content Size

8.6 MB

After Optimization

8.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tsubasabunko.jp main page is 8.6 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 7.8 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 394.9 kB

  • Original 454.9 kB
  • After minification 423.2 kB
  • After compression 60.1 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 394.9 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 77.4 kB

  • Original 7.8 MB
  • After minification 7.7 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. Tsubasabunko images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.7 kB

  • Original 330.1 kB
  • After minification 330.1 kB
  • After compression 327.4 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

-0%

Potential reduce by 132 B

  • Original 59.9 kB
  • After minification 59.9 kB
  • After compression 59.7 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. Tsubasabunko.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 27 (14%)

Requests Now

195

After Optimization

168

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 195 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tsubasabunko. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

tsubasabunko.jp

tsubasabunko.jp

1205 ms

style.css

style.css

512 ms

vendor.chunk.js

vendor.chunk.js

1627 ms

bundle.js

bundle.js

541 ms

gtm.js

gtm.js

152 ms

css2

css2

42 ms

MZBoD3q9oRM

MZBoD3q9oRM

163 ms

default.jpg

default.jpg

134 ms

left-1.svg

left-1.svg

204 ms

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left-2.svg

203 ms

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210 ms

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706 ms

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704 ms

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705 ms

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right-2.svg

902 ms

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904 ms

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905 ms

right-5.svg

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902 ms

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907 ms

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sns-line.svg

1068 ms

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1371 ms

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2226 ms

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1963 ms

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2386 ms

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2488 ms

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2449 ms

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2551 ms

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2398 ms

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2557 ms

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2557 ms

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2573 ms

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2622 ms

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353 ms

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620 ms

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885 ms

www-player.css

www-player.css

29 ms

www-embed-player.js

www-embed-player.js

56 ms

base.js

base.js

167 ms

js

js

72 ms

analytics.js

analytics.js

145 ms

td.min.js

td.min.js

143 ms

icomoon.ttf

icomoon.ttf

2461 ms

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2517 ms

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2495 ms

ad_status.js

ad_status.js

316 ms

tsubasabunko_all

tsubasabunko_all

186 ms

collect

collect

134 ms

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163 ms

embed.js

embed.js

34 ms

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2039 ms

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43 ms

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2098 ms

collect

collect

85 ms

Create

Create

76 ms

pixel

pixel

111 ms

id

id

29 ms

ga-audiences

ga-audiences

112 ms

pixel

pixel

115 ms

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1938 ms

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1991 ms

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1996 ms

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1996 ms

GenerateIT

GenerateIT

131 ms

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1903 ms

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sync

52 ms

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1915 ms

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joyful-left.svg

1947 ms

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joyful-right.svg

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23 ms

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97 ms

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55 ms

settings

settings

93 ms

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1726 ms

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21 ms

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1154 ms

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1163 ms

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1100 ms

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22 ms

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87 ms

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peaceful-right.svg

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1104 ms

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1050 ms

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1045 ms

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1193 ms

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1035 ms

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1061 ms

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19 ms

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1063 ms

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1034 ms

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1002 ms

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mode3_w517-tsubasaHP_thumbs_trp_2404.jpg

1021 ms

qoe

qoe

6 ms

log_event

log_event

1 ms

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mode3_w517-sikibu_tsubasaHP_thumbs.jpg

1099 ms

MZBoD3q9oRM

MZBoD3q9oRM

8 ms

MZBoD3q9oRM

MZBoD3q9oRM

1 ms

MZBoD3q9oRM

MZBoD3q9oRM

237 ms

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mode3_w222-f602a3ccda5d111d742a05965f3b169f.png

1058 ms

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1045 ms

id

id

153 ms

ad_status.js

ad_status.js

148 ms

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883 ms

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mode3_w222-b35a70a0ec2ad1b1390805d49f7ac4b9.png

891 ms

Create

Create

260 ms

AIdro_lEmp1TZ-MFKefWqCdygH-4PQaqMB7d9CzsnE_R8lXxQsc=s68-c-k-c0x00ffffff-no-rj

AIdro_lEmp1TZ-MFKefWqCdygH-4PQaqMB7d9CzsnE_R8lXxQsc=s68-c-k-c0x00ffffff-no-rj

82 ms

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841 ms

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959 ms

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979 ms

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mode3_w222-53db71f13c38d1163a32df5f1916c341.png

985 ms

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984 ms

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994 ms

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mode3_w222-2a89e96b2f0ee99571dd2198360a37d1.jpg

1002 ms

Create

Create

192 ms

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1057 ms

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1058 ms

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952 ms

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949 ms

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965 ms

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969 ms

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mode3_w222-313cbae6f1908c6cf131a87fc8778671.png

974 ms

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989 ms

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995 ms

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995 ms

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1012 ms

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mode3_w222-b23b37acfc246c75d503577f44e898da.png

1014 ms

GenerateIT

GenerateIT

88 ms

GenerateIT

GenerateIT

24 ms

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985 ms

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996 ms

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1003 ms

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1004 ms

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1027 ms

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1024 ms

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1061 ms

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1021 ms

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1024 ms

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1024 ms

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1052 ms

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1037 ms

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1062 ms

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1022 ms

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mode3_w222-91a3508ba9574d1d188f477ae790a748.png

1024 ms

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1025 ms

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1044 ms

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1038 ms

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1044 ms

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1028 ms

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1023 ms

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_05_240508_141758.png

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_05_240508_141758.png

1027 ms

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_06_240508_141821.jpg

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_06_240508_141821.jpg

1042 ms

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_07.jpg

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_07.jpg

1044 ms

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_08.jpg

%E3%82%B9%E3%83%9A%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B3%E3%83%BC%E3%83%8A%E3%83%BC_08.jpg

1043 ms

line-add.png

line-add.png

1034 ms

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mode3_w304-catalog-2024.png

1193 ms

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1026 ms

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1039 ms

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1047 ms

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1042 ms

%E3%83%9A%E3%83%BC%E3%82%B8%E4%B8%8B%E9%83%A8_%E3%83%A8%E3%83%A1%E3%83%AB%E3%83%90%E3%83%90%E3%83%8A%E3%83%BC.png

%E3%83%9A%E3%83%BC%E3%82%B8%E4%B8%8B%E9%83%A8_%E3%83%A8%E3%83%A1%E3%83%AB%E3%83%90%E3%83%90%E3%83%8A%E3%83%BC.png

1043 ms

slider-btn-left.svg

slider-btn-left.svg

1028 ms

slider-btn-right.svg

slider-btn-right.svg

1057 ms

Accessibility Review

tsubasabunko.jp accessibility score

96

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.

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

Links do not have a discernible name

Best Practices

tsubasabunko.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

tsubasabunko.jp SEO score

97

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Tsubasabunko.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 Tsubasabunko.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

tsubasabunko.jp

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