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theory.ne.jp screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

theory.ne.jp

THEORY(セオリー) | 著名人・芸能人の有料メールマガジン/メルマガ

Page Load Speed

11 sec in total

First Response

955 ms

Resources Loaded

9.9 sec

Page Rendered

203 ms

theory.ne.jp screenshot

About Website

Click here to check amazing THEORY content for Japan. Otherwise, check out these important facts you probably never knew about theory.ne.jp

ビジネスからファッションまで幅広いメルマガを配信しております！

Visit theory.ne.jp

Key Findings

We analyzed Theory.ne.jp page load time and found that the first response time was 955 ms and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

theory.ne.jp performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

22/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value540 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.1 s

64/100

10%

Network Requests Diagram

theory.ne.jp

955 ms

import.css

325 ms

slide.css

345 ms

jquery.min.js

1229 ms

slide.js

529 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 96% of them (81 requests) were addressed to the original Theory.ne.jp, 2% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (5.7 sec) belongs to the original domain Theory.ne.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 250.9 kB (47%)

Content Size

538.0 kB

After Optimization

287.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Theory.ne.jp main page is 538.0 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. 15% of websites need less resources to load. Images take 230.8 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 11.9 kB

  • Original 15.0 kB
  • After minification 13.3 kB
  • After compression 3.1 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. This page needs HTML code to be minified as it can gain 1.7 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 11.9 kB or 80% of the original size.

Image Optimization

-12%

Potential reduce by 28.0 kB

  • Original 230.8 kB
  • After minification 202.9 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. Obviously, THEORY needs image optimization as it can save up to 28.0 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-58%

Potential reduce by 74.6 kB

  • Original 128.1 kB
  • After minification 124.2 kB
  • After compression 53.5 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 74.6 kB or 58% of the original size.

CSS Optimization

-83%

Potential reduce by 136.4 kB

  • Original 164.1 kB
  • After minification 147.9 kB
  • After compression 27.7 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. Theory.ne.jp needs all CSS files to be minified and compressed as it can save up to 136.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (34%)

Requests Now

70

After Optimization

46

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of THEORY. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

theory.ne.jp

theory.ne.jp

955 ms

import.css

import.css

325 ms

slide.css

slide.css

345 ms

jquery.min.js

jquery.min.js

1229 ms

slide.js

slide.js

529 ms

rollover.js

rollover.js

375 ms

smoothscroll.js

smoothscroll.js

484 ms

top_random1.js

top_random1.js

516 ms

top_random2.js

top_random2.js

689 ms

jquery.min.js

jquery.min.js

32 ms

mosaic.1.0.1.js

mosaic.1.0.1.js

748 ms

acctag.js

acctag.js

646 ms

rollover2.js

rollover2.js

690 ms

base.css

base.css

1190 ms

top.css

top.css

980 ms

coupon.css

coupon.css

541 ms

mypage.css

mypage.css

546 ms

order.css

order.css

806 ms

faq.css

faq.css

713 ms

reset.css

reset.css

718 ms

common.css

common.css

1234 ms

bg_body_top.gif

bg_body_top.gif

175 ms

ga.js

ga.js

48 ms

acclog.cgi

acclog.cgi

5689 ms

icon_head_cart1.gif

icon_head_cart1.gif

178 ms

logo.gif

logo.gif

194 ms

head_menu.gif

head_menu.gif

184 ms

bg-black.png

bg-black.png

173 ms

masudo_rollout.jpg

masudo_rollout.jpg

457 ms

yamazaki_rollout.jpg

yamazaki_rollout.jpg

497 ms

miyaji_rollout.jpg

miyaji_rollout.jpg

355 ms

zeebra_rollout.jpg

zeebra_rollout.jpg

363 ms

t_thumb_join_rollout.gif

t_thumb_join_rollout.gif

381 ms

claude_rollout.jpg

claude_rollout.jpg

530 ms

kimura_rollout.jpg

kimura_rollout.jpg

542 ms

uchimura_rollout.jpg

uchimura_rollout.jpg

761 ms

t_big_3_rollout.jpg

t_big_3_rollout.jpg

1156 ms

t_thumb_free_rollout.gif

t_thumb_free_rollout.gif

658 ms

kawasaki_rollout.jpg

kawasaki_rollout.jpg

717 ms

gen_rollout.jpg

gen_rollout.jpg

734 ms

ohtake_rollout.jpg

ohtake_rollout.jpg

981 ms

arai_rollout.jpg

arai_rollout.jpg

895 ms

t_big_2_rollout.jpg

t_big_2_rollout.jpg

1087 ms

ishii_rollout.jpg

ishii_rollout.jpg

1135 ms

t_thumb_write_rollout.gif

t_thumb_write_rollout.gif

1068 ms

yoneda_rollout.jpg

yoneda_rollout.jpg

1305 ms

ico_news.gif

ico_news.gif

1256 ms

ico_fb_rollout.gif

ico_fb_rollout.gif

1273 ms

ico_twitter_rollout.gif

ico_twitter_rollout.gif

1322 ms

foot_logo.gif

foot_logo.gif

1327 ms

__utm.gif

__utm.gif

13 ms

masudo_rollover.jpg

masudo_rollover.jpg

176 ms

yamazaki_rollover.jpg

yamazaki_rollover.jpg

182 ms

miyaji_rollover.jpg

miyaji_rollover.jpg

178 ms

zeebra_rollover.jpg

zeebra_rollover.jpg

190 ms

t_thumb_join_rollover.gif

t_thumb_join_rollover.gif

181 ms

claude_rollover.jpg

claude_rollover.jpg

166 ms

kimura_rollover.jpg

kimura_rollover.jpg

328 ms

uchimura_rollover.jpg

uchimura_rollover.jpg

345 ms

t_big_3_rollover.jpg

t_big_3_rollover.jpg

904 ms

t_thumb_free_rollover.gif

t_thumb_free_rollover.gif

349 ms

kawasaki_rollover.jpg

kawasaki_rollover.jpg

352 ms

gen_rollover.jpg

gen_rollover.jpg

376 ms

ohtake_rollover.jpg

ohtake_rollover.jpg

488 ms

arai_rollover.jpg

arai_rollover.jpg

516 ms

t_big_2_rollover.jpg

t_big_2_rollover.jpg

1045 ms

ishii_rollover.jpg

ishii_rollover.jpg

524 ms

t_thumb_write_rollover.gif

t_thumb_write_rollover.gif

563 ms

yoneda_rollover.jpg

yoneda_rollover.jpg

648 ms

ico_fb_rollover.gif

ico_fb_rollover.gif

864 ms

ico_twitter_rollover.gif

ico_twitter_rollover.gif

701 ms

theory.ne.jp

theory.ne.jp

845 ms

theory.ne.jp

theory.ne.jp

1076 ms

theory.ne.jp

theory.ne.jp

954 ms

theory.ne.jp

theory.ne.jp

1277 ms

theory.ne.jp

theory.ne.jp

965 ms

theory.ne.jp

theory.ne.jp

1131 ms

theory.ne.jp

theory.ne.jp

1120 ms

theory.ne.jp

theory.ne.jp

1194 ms

theory.ne.jp

theory.ne.jp

1025 ms

theory.ne.jp

theory.ne.jp

1152 ms

theory.ne.jp

theory.ne.jp

1134 ms

theory.ne.jp

theory.ne.jp

1352 ms

theory.ne.jp

theory.ne.jp

1255 ms

Accessibility Review

theory.ne.jp accessibility score

76

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

theory.ne.jp best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

theory.ne.jp SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

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 Theory.ne.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 Theory.ne.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

theory.ne.jp

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