Tools & Wizards About Us

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

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

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

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: