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tadoku.org screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

tadoku.org

NPO多言語多読

Page Load Speed

11.9 sec in total

First Response

2.8 sec

Resources Loaded

8.9 sec

Page Rendered

226 ms

tadoku.org screenshot

About Website

Welcome to tadoku.org homepage info - get ready to check Tadoku best content for United States right away, or after learning these important things about tadoku.org

私たちは、外国語を身につけたい人やそれを支援する人たちに、「多読」を提案し、応援します。

Visit tadoku.org

Key Findings

We analyzed Tadoku.org page load time and found that the first response time was 2.8 sec and then it took 9.1 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

tadoku.org performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value26.0 s

0/100

25%

SI (Speed Index)

Value47.7 s

0/100

10%

TBT (Total Blocking Time)

Value8,130 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.027

100/100

15%

TTI (Time to Interactive)

Value23.4 s

1/100

10%

Network Requests Diagram

tadoku.org

2825 ms

style.css

332 ms

styles.css

335 ms

pagenavi-css.css

342 ms

jquery.min.js

15 ms

Our browser made a total of 136 requests to load all elements on the main page. We found that 47% of them (64 requests) were addressed to the original Tadoku.org, 13% (18 requests) were made to Static.xx.fbcdn.net and 6% (8 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (5.2 sec) belongs to the original domain Tadoku.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 894.9 kB (36%)

Content Size

2.5 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tadoku.org main page is 2.5 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. 85% 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 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 36.5 kB

  • Original 48.0 kB
  • After minification 46.4 kB
  • After compression 11.4 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 36.5 kB or 76% of the original size.

Image Optimization

-7%

Potential reduce by 100.2 kB

  • Original 1.4 MB
  • After minification 1.3 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. Tadoku images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 324.7 kB

  • Original 502.0 kB
  • After minification 499.1 kB
  • After compression 177.3 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 324.7 kB or 65% of the original size.

CSS Optimization

-83%

Potential reduce by 433.5 kB

  • Original 522.4 kB
  • After minification 513.0 kB
  • After compression 88.9 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. Tadoku.org needs all CSS files to be minified and compressed as it can save up to 433.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 66 (50%)

Requests Now

131

After Optimization

65

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 131 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tadoku. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

tadoku.org

tadoku.org

2825 ms

style.css

style.css

332 ms

styles.css

styles.css

335 ms

pagenavi-css.css

pagenavi-css.css

342 ms

jquery.min.js

jquery.min.js

15 ms

all.js

all.js

71 ms

theme.script.js

theme.script.js

313 ms

home.js

home.js

313 ms

default.css

default.css

351 ms

common.css

common.css

365 ms

subpage.css

subpage.css

557 ms

jcarousellite_1.0.1.min.js

jcarousellite_1.0.1.min.js

291 ms

jquery.form.min.js

jquery.form.min.js

456 ms

scripts.js

scripts.js

375 ms

analytics.js

analytics.js

17 ms

logo.jpg

logo.jpg

207 ms

ja.gif

ja.gif

185 ms

en.gif

en.gif

172 ms

zh.gif

zh.gif

171 ms

ko.gif

ko.gif

189 ms

btn_search.gif

btn_search.gif

185 ms

mv01.jpg

mv01.jpg

4918 ms

mv02.jpg

mv02.jpg

4745 ms

mv03.jpg

mv03.jpg

4910 ms

mvnavi01.jpg

mvnavi01.jpg

3927 ms

mvnavi02.jpg

mvnavi02.jpg

3926 ms

mvnavi03.jpg

mvnavi03.jpg

3928 ms

mvnavi04.jpg

mvnavi04.jpg

4100 ms

icon_arrow101_l.gif

icon_arrow101_l.gif

4100 ms

icon_arrow101_r.gif

icon_arrow101_r.gif

4099 ms

left_bnr_activity.jpg

left_bnr_activity.jpg

4341 ms

left_bnr_supporter.jpg

left_bnr_supporter.jpg

4319 ms

left_bnr_media.jpg

left_bnr_media.jpg

4318 ms

left_bnr_books.jpg

left_bnr_books.jpg

4509 ms

left_bnr_calendar.jpg

left_bnr_calendar.jpg

4511 ms

left_bnr_buy_ja.jpg

left_bnr_buy_ja.jpg

4530 ms

left_txt_more_tadoku.jpg

left_txt_more_tadoku.jpg

4616 ms

left_bnr_tadoku_forum.jpg

left_bnr_tadoku_forum.jpg

4636 ms

left_bnr_tadoku_blog.jpg

left_bnr_tadoku_blog.jpg

4718 ms

left_bnr_sakai_blog.jpg

left_bnr_sakai_blog.jpg

4784 ms

facebook.png

facebook.png

4812 ms

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10222818310.jpeg

4906 ms

Pearson_Green_LoRes.jpg

Pearson_Green_LoRes.jpg

4910 ms

chikuma_banner.gif

chikuma_banner.gif

4975 ms

ask.jpg

ask.jpg

5164 ms

logo1.gif

logo1.gif

5111 ms

btn_pagetop.jpg

btn_pagetop.jpg

5083 ms

lbl_copyright.jpg

lbl_copyright.jpg

5074 ms

servicegrant.jpg

servicegrant.jpg

5098 ms

187 ms

sdk.js

sdk.js

100 ms

bg_header_bottom.jpg

bg_header_bottom.jpg

5116 ms

icon_arrow01.gif

icon_arrow01.gif

5228 ms

xd_arbiter.php

xd_arbiter.php

114 ms

xd_arbiter.php

xd_arbiter.php

172 ms

collect

collect

61 ms

3oRNmn9iLLE

3oRNmn9iLLE

142 ms

widgets.js

widgets.js

20 ms

tweet_button.html

tweet_button.html

18 ms

plusone.js

plusone.js

127 ms

jot

jot

3807 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

48 ms

lDbg7ON2mm4

lDbg7ON2mm4

102 ms

oaktIRE0lVk

oaktIRE0lVk

83 ms

Q6SbVtDmPMk

Q6SbVtDmPMk

79 ms

follow_button.b9740740e0bcf9b0657c5b11bd4388da.ja.html

follow_button.b9740740e0bcf9b0657c5b11bd4388da.ja.html

15 ms

gnavi.jpg

gnavi.jpg

5083 ms

bg_home_mv.jpg

bg_home_mv.jpg

5098 ms

bg_left_top.jpg

bg_left_top.jpg

5120 ms

bg_left_mid.jpg

bg_left_mid.jpg

5174 ms

bg_left_bottom.jpg

bg_left_bottom.jpg

5157 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

3604 ms

www-embed-player.js

www-embed-player.js

3697 ms

base.js

base.js

3746 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

24 ms

www-embed-player.js

www-embed-player.js

50 ms

base.js

base.js

3623 ms

page.php

page.php

3736 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

29 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

3568 ms

fastbutton

fastbutton

3723 ms

pixel.gif

pixel.gif

5205 ms

like.php

like.php

3847 ms

postmessageRelay

postmessageRelay

309 ms

jot

jot

265 ms

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

51 ms

ad_status.js

ad_status.js

50 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

134 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

20 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

161 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

161 ms

m83iJTM8ZQF.css

m83iJTM8ZQF.css

388 ms

vjfv3j-EdeX.css

vjfv3j-EdeX.css

419 ms

OmIkD0koXXo.css

OmIkD0koXXo.css

441 ms

q68gy-v_YMF.js

q68gy-v_YMF.js

454 ms

k19Xse48j5I.js

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478 ms

ihptErjAmMX.js

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477 ms

3So47A9WcrL.js

3So47A9WcrL.js

438 ms

cUsKAwzqrQw.js

cUsKAwzqrQw.js

478 ms

icon_arrow06.gif

icon_arrow06.gif

1500 ms

bg_main_h2.jpg

bg_main_h2.jpg

1508 ms

icon_arrow02.gif

icon_arrow02.gif

1569 ms

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

172 ms

ad_status.js

ad_status.js

162 ms

wy1X4hBW7e7.js

wy1X4hBW7e7.js

426 ms

LVx-xkvaJ0b.png

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313 ms

3193398744-postmessagerelay.js

3193398744-postmessagerelay.js

224 ms

rpc:shindig_random.js

rpc:shindig_random.js

97 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

223 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

227 ms

icon_cat_seminar.jpg

icon_cat_seminar.jpg

1422 ms

icon_cat_news.jpg

icon_cat_news.jpg

1431 ms

icon_arrow03.gif

icon_arrow03.gif

1477 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

28 ms

bg_sanjo.gif

bg_sanjo.gif

1279 ms

bg_bottom_sitemap_top.gif

bg_bottom_sitemap_top.gif

1264 ms

bg_bottom_sitemap_bottom.gif

bg_bottom_sitemap_bottom.gif

1345 ms

12108988_1031227093595018_4389946495228194643_n.jpg

12108988_1031227093595018_4389946495228194643_n.jpg

106 ms

safe_image.php

safe_image.php

107 ms

safe_image.php

safe_image.php

122 ms

safe_image.php

safe_image.php

149 ms

safe_image.php

safe_image.php

156 ms

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120 ms

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135 ms

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26 ms

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1187 ms

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21 ms

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22 ms

Accessibility Review

tadoku.org accessibility score

60

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

<frame> or <iframe> elements do not have a title

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

tadoku.org best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

tadoku.org SEO score

79

Search Engine Optimization Advices

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 Tadoku.org 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 Tadoku.org 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

tadoku.org

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