Tools & Wizards About Us
c21-online.jp screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

c21-online.jp

オンラインロボアクションRPG - 「鋼鉄戦記Ｃ２１」公式サイト

Page Load Speed

4 sec in total

First Response

362 ms

Resources Loaded

3.5 sec

Page Rendered

172 ms

c21-online.jp screenshot

About Website

Click here to check amazing C 21 Online content for Japan. Otherwise, check out these important facts you probably never knew about c21-online.jp

オンラインゲームならサイバーステップのアクション無料ゲーム「鋼鉄戦記Ｃ２１」。たくさんのパーツを組み合わせて自分だけのオリジナルロボを作ろう！

Visit c21-online.jp

Key Findings

We analyzed C21-online.jp page load time and found that the first response time was 362 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

c21-online.jp performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value20.9 s

0/100

25%

SI (Speed Index)

Value14.4 s

1/100

10%

TBT (Total Blocking Time)

Value2,950 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value22.0 s

1/100

10%

Network Requests Diagram

c21-online.jp

362 ms

landing.css

499 ms

thickbox_land.css

336 ms

global.js

337 ms

jquery-1.8.2.min.js

667 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 39% of them (29 requests) were addressed to the original C21-online.jp, 15% (11 requests) were made to Regist.cyberstep.jp and 11% (8 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain C21-online.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 323.1 kB (22%)

Content Size

1.5 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of C21-online.jp main page is 1.5 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. 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 717.1 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 17.3 kB

  • Original 23.5 kB
  • After minification 22.3 kB
  • After compression 6.2 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 17.3 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 20.3 kB

  • Original 717.1 kB
  • After minification 696.8 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. C 21 Online images are well optimized though.

JavaScript Optimization

-40%

Potential reduce by 252.4 kB

  • Original 623.7 kB
  • After minification 612.0 kB
  • After compression 371.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 252.4 kB or 40% of the original size.

CSS Optimization

-33%

Potential reduce by 33.1 kB

  • Original 99.6 kB
  • After minification 89.9 kB
  • After compression 66.5 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. C21-online.jp needs all CSS files to be minified and compressed as it can save up to 33.1 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (44%)

Requests Now

71

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C 21 Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

c21-online.jp

c21-online.jp

362 ms

landing.css

landing.css

499 ms

thickbox_land.css

thickbox_land.css

336 ms

global.js

global.js

337 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

667 ms

thickbox_land.js

thickbox_land.js

337 ms

css_browser_selector.js

css_browser_selector.js

338 ms

landing.js

landing.js

501 ms

jquery.min.js

jquery.min.js

8 ms

porthole.min.js

porthole.min.js

169 ms

widgets.js

widgets.js

50 ms

customise.jpg

customise.jpg

526 ms

aksyon.jpg

aksyon.jpg

642 ms

logo.png

logo.png

168 ms

gtm.js

gtm.js

82 ms

906 ms

loadingAnimation.gif

loadingAnimation.gif

613 ms

body_back.png

body_back.png

1275 ms

h2_text.png

h2_text.png

613 ms

leftcont_bg.png

leftcont_bg.png

614 ms

yt_top.png

yt_top.png

241 ms

rightcont_bg.jpg

rightcont_bg.jpg

241 ms

toroku_bg.png

toroku_bg.png

496 ms

ID_btn.png

ID_btn.png

612 ms

toroku_title.png

toroku_title.png

612 ms

dlbotan.png

dlbotan.png

612 ms

dlbotan_mac.png

dlbotan_mac.png

783 ms

h3_img.png

h3_img.png

782 ms

container_%20buttom.jpg

container_%20buttom.jpg

782 ms

conatine_frame.png

conatine_frame.png

781 ms

logo_cs.png

logo_cs.png

780 ms

stars.png

stars.png

1104 ms

twinkling.png

twinkling.png

953 ms

sdk.js

sdk.js

26 ms

3ZJEVdgQtko

3ZJEVdgQtko

104 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

216 ms

sdk.js

sdk.js

5 ms

js

js

57 ms

iframe_api

iframe_api

28 ms

3ZJEVdgQtko

3ZJEVdgQtko

119 ms

www-widgetapi.js

www-widgetapi.js

6 ms

settings

settings

403 ms

www-player.css

www-player.css

26 ms

www-embed-player.js

www-embed-player.js

44 ms

base.js

base.js

68 ms

ad_status.js

ad_status.js

158 ms

71suEs83z0XiqH0n_P_GdL05qLj4eQk8ZwtXjY02tX0.js

71suEs83z0XiqH0n_P_GdL05qLj4eQk8ZwtXjY02tX0.js

122 ms

embed.js

embed.js

35 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

59 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

60 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

33 ms

Create

Create

111 ms

id

id

16 ms

embeds

embeds

93 ms

new_register2.css

new_register2.css

662 ms

jquery-1.8.0.min.js

jquery-1.8.0.min.js

826 ms

css_browser_selector.js

css_browser_selector.js

498 ms

jquery.infieldlabel.js

jquery.infieldlabel.js

498 ms

jquery.exresize.0.1.0.js

jquery.exresize.0.1.0.js

499 ms

porthole.min.js

porthole.min.js

499 ms

embeds

embeds

54 ms

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

48 ms

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

66 ms

GenerateIT

GenerateIT

15 ms

txt_regist.png

txt_regist.png

501 ms

gtm.js

gtm.js

52 ms

fr.png

fr.png

497 ms

regist-s0cc5d9f3d4.png

regist-s0cc5d9f3d4.png

663 ms

regbtn_inactive.jpg

regbtn_inactive.jpg

497 ms

analytics.js

analytics.js

3 ms

destination

destination

33 ms

collect

collect

12 ms

collect

collect

45 ms

js

js

52 ms

ga-audiences

ga-audiences

102 ms

Accessibility Review

c21-online.jp accessibility score

94

Accessibility Issues

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

Best Practices

c21-online.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

High

Page has valid source maps

SEO Factors

c21-online.jp SEO score

67

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 C21-online.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 C21-online.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

c21-online.jp

Open Graph data is detected on the main page of C 21 Online. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: