Tools & Wizards About Us
codecamp.jp screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

codecamp.jp

プログラミング学ぶなら、オンラインレッスンNo.1 | オンラインプログラミングスクールCodeCamp（コードキャンプ）

Page Load Speed

7.4 sec in total

First Response

298 ms

Resources Loaded

5.6 sec

Page Rendered

1.5 sec

codecamp.jp screenshot

About Website

Welcome to codecamp.jp homepage info - get ready to check Codecamp best content for Japan right away, or after learning these important things about codecamp.jp

CodeCamp（コードキャンプ）はオンラインのプログラミング/Webデザイン学習サービス。実践型カリキュラムで、技術力/指導力を備えた講師が徹底的に指導。DXを実現するなら、オンラインのプログラミング/Webデザイン学習CodeCamp

Visit codecamp.jp

Key Findings

We analyzed Codecamp.jp page load time and found that the first response time was 298 ms and then it took 7.1 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

codecamp.jp performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

62/100

10%

LCP (Largest Contentful Paint)

Value15.5 s

0/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value2,630 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value32.6 s

0/100

10%

Network Requests Diagram

codecamp.jp

298 ms

codecamp.jp

1334 ms

gtm.js

75 ms

application-149acbf7a08cd509f2d7bb7e461349a8142ca5891145e1f89b9e2df4c6f67e62.css

722 ms

services-5bed0f39c2e42b9b61a5602e1488cb20d023fd4664fe077c799b09a9a732dfbc.js

1461 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 5% of them (5 requests) were addressed to the original Codecamp.jp, 93% (91 requests) were made to S3-ap-northeast-1.amazonaws.com and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.2 sec) relates to the external source S3-ap-northeast-1.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 306.6 kB (6%)

Content Size

4.7 MB

After Optimization

4.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Codecamp.jp main page is 4.7 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. 40% of websites need less resources to load. Images take 4.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 65.6 kB

  • Original 83.9 kB
  • After minification 83.8 kB
  • After compression 18.3 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 65.6 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 241.1 kB

  • Original 4.4 MB
  • After minification 4.2 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. Codecamp images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 185.0 kB
  • After minification 185.0 kB
  • After compression 185.0 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 0 B

  • Original 59.7 kB
  • After minification 59.7 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. Codecamp.jp has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

96

After Optimization

96

  • Images
  • JavaScript
  • CSS

The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Codecamp. According to our analytics all requests are already optimized.

Network Requests Diagram

codecamp.jp

codecamp.jp

298 ms

codecamp.jp

codecamp.jp

1334 ms

gtm.js

gtm.js

75 ms

application-149acbf7a08cd509f2d7bb7e461349a8142ca5891145e1f89b9e2df4c6f67e62.css

application-149acbf7a08cd509f2d7bb7e461349a8142ca5891145e1f89b9e2df4c6f67e62.css

722 ms

services-5bed0f39c2e42b9b61a5602e1488cb20d023fd4664fe077c799b09a9a732dfbc.js

services-5bed0f39c2e42b9b61a5602e1488cb20d023fd4664fe077c799b09a9a732dfbc.js

1461 ms

services-dd7f6b80f3d2ea92073cc7c181d2c8afc2688f357e274787295ba57d4e3f7f80.css

services-dd7f6b80f3d2ea92073cc7c181d2c8afc2688f357e274787295ba57d4e3f7f80.css

590 ms

icn_10th_logo.png

icn_10th_logo.png

892 ms

css2

css2

35 ms

icn_10th_emblem.png

icn_10th_emblem.png

755 ms

original.png

original.png

1074 ms

original.png

original.png

780 ms

img_top_01.png

img_top_01.png

755 ms

icn_01.png

icn_01.png

752 ms

img_top_02.png

img_top_02.png

1134 ms

icn_02.png

icn_02.png

848 ms

img_top_03.png

img_top_03.png

1054 ms

icn_03.png

icn_03.png

917 ms

img_course_web_3.png

img_course_web_3.png

1119 ms

img_course_website_dev.jpg

img_course_website_dev.jpg

1375 ms

img_course_banner.png

img_course_banner.png

1404 ms

img_course_engineer.jpg

img_course_engineer.jpg

1530 ms

img_course_design_job_change02.jpg

img_course_design_job_change02.jpg

1558 ms

img_course_design_side_business02.jpg

img_course_design_side_business02.jpg

1593 ms

img_course_ordermade_3.png

img_course_ordermade_3.png

1468 ms

img_about01.png

img_about01.png

1608 ms

img_about02.jpg

img_about02.jpg

1583 ms

img_about03.png

img_about03.png

1844 ms

img_about04.png

img_about04.png

1717 ms

ito.png

ito.png

1710 ms

tanaka.png

tanaka.png

1764 ms

matsui.png

matsui.png

1750 ms

kuwata.png

kuwata.png

1785 ms

kawamoto.png

kawamoto.png

1873 ms

shino.png

shino.png

1872 ms

inoue.png

inoue.png

1911 ms

ohuchi.png

ohuchi.png

1923 ms

logo_line.png

logo_line.png

1959 ms

logo_gungho.png

logo_gungho.png

2041 ms

logo_rekochoku.png

logo_rekochoku.png

2031 ms

logo_litalico.png

logo_litalico.png

2050 ms

logo_microad.png

logo_microad.png

2088 ms

logo_opt.png

logo_opt.png

2082 ms

logo_cybird.png

logo_cybird.png

2189 ms

logo_neolab.png

logo_neolab.png

1485 ms

logo_try.png

logo_try.png

1484 ms

logo_future.png

logo_future.png

1466 ms

logo_nitori.png

logo_nitori.png

1508 ms

logo_orix.png

logo_orix.png

1482 ms

logo_konica.png

logo_konica.png

1560 ms

logo_axa.png

logo_axa.png

1470 ms

logo_innovation.png

logo_innovation.png

1354 ms

logo_virtualex.png

logo_virtualex.png

1369 ms

logo_usen.png

logo_usen.png

1362 ms

logo_mixi.png

logo_mixi.png

1292 ms

logo_bizreach.png

logo_bizreach.png

1206 ms

logo_d2c.png

logo_d2c.png

1214 ms

logo_accela.png

logo_accela.png

1135 ms

logo_tdc.png

logo_tdc.png

1071 ms

logo_nikkei.png

logo_nikkei.png

1067 ms

logo_nhk.png

logo_nhk.png

1084 ms

logo_asahi.png

logo_asahi.png

1183 ms

logo_mainichi.png

logo_mainichi.png

1154 ms

logo_diamond.png

logo_diamond.png

1054 ms

logo_toyo.png

logo_toyo.png

1083 ms

logo_tech.png

logo_tech.png

1087 ms

logo_itpro.png

logo_itpro.png

1079 ms

logo_cnet.png

logo_cnet.png

1154 ms

logo_tc.png

logo_tc.png

1118 ms

logo_bridge.png

logo_bridge.png

1149 ms

logo_watch.png

logo_watch.png

1111 ms

logo_toyo_online.png

logo_toyo_online.png

1130 ms

logo_mj.png

logo_mj.png

1113 ms

logo_ascii.png

logo_ascii.png

1169 ms

logo_dime.png

logo_dime.png

1100 ms

logo_edtechzine.png

logo_edtechzine.png

1130 ms

logo_techwave.png

logo_techwave.png

1132 ms

logo_mynavi.png

logo_mynavi.png

1157 ms

logo_ict.png

logo_ict.png

1148 ms

logo_resemom.png

logo_resemom.png

1107 ms

logo_meetrecruit.png

logo_meetrecruit.png

1102 ms

logo_thestartup.png

logo_thestartup.png

1134 ms

logo_dreamgate.png

logo_dreamgate.png

1120 ms

logo_edtech.png

logo_edtech.png

1183 ms

icn_tagline.png

icn_tagline.png

1202 ms

bg_top_3.jpg

bg_top_3.jpg

1105 ms

img_code_l.png

img_code_l.png

1147 ms

img_code_r.png

img_code_r.png

1107 ms

icn_04.png

icn_04.png

1122 ms

icn_05.png

icn_05.png

1177 ms

icn_06.png

icn_06.png

1147 ms

icn_07.png

icn_07.png

1076 ms

icn_08.png

icn_08.png

1072 ms

icn_09.png

icn_09.png

1127 ms

bg_cta.jpg

bg_cta.jpg

1108 ms

icn_check.png

icn_check.png

1170 ms

img_teacher.png

img_teacher.png

1293 ms

icn_11.png

icn_11.png

1049 ms

icn_10.png

icn_10.png

1060 ms

Accessibility Review

codecamp.jp accessibility score

76

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

codecamp.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

codecamp.jp SEO score

93

Search Engine Optimization Advices

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

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

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 Codecamp.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 Codecamp.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

codecamp.jp

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