Tools & Wizards About Us
atmarkit.jp screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

atmarkit.jp

ITエキスパートのための問題解決メディア - ＠IT

Page Load Speed

4.6 sec in total

First Response

300 ms

Resources Loaded

3.9 sec

Page Rendered

384 ms

atmarkit.jp screenshot

About Website

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

プロフェッショナルなIT技術者・管理者のためのコンテンツとコミュニティ満載の問題解決サイト。製品や技術に関する高度な解説記事や、掲示板、質問コーナーなど。

Visit atmarkit.jp

Key Findings

We analyzed Atmarkit.jp page load time and found that the first response time was 300 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

atmarkit.jp performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value3,030 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.3 s

1/100

10%

Network Requests Diagram

atmarkit.jp

300 ms

atmarkit.jp

669 ms

atmarkit.itmedia.co.jp

852 ms

movePC2SP.js

193 ms

base.css

632 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Atmarkit.jp, 36% (25 requests) were made to Image.itmedia.co.jp and 25% (17 requests) were made to Atmarkit.itmedia.co.jp. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Image.itmedia.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 209.6 kB (38%)

Content Size

551.3 kB

After Optimization

341.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Atmarkit.jp main page is 551.3 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. 70% of websites need less resources to load. Javascripts take 274.5 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 72.7 kB

  • Original 97.6 kB
  • After minification 94.3 kB
  • After compression 24.9 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 72.7 kB or 74% of the original size.

Image Optimization

-8%

Potential reduce by 12.7 kB

  • Original 156.8 kB
  • After minification 144.1 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. Atmarkit images are well optimized though.

JavaScript Optimization

-43%

Potential reduce by 116.9 kB

  • Original 274.5 kB
  • After minification 266.3 kB
  • After compression 157.5 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 116.9 kB or 43% of the original size.

CSS Optimization

-32%

Potential reduce by 7.2 kB

  • Original 22.3 kB
  • After minification 21.3 kB
  • After compression 15.2 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. Atmarkit.jp needs all CSS files to be minified and compressed as it can save up to 7.2 kB or 32% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (71%)

Requests Now

66

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Atmarkit. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

atmarkit.jp

atmarkit.jp

300 ms

atmarkit.jp

atmarkit.jp

669 ms

atmarkit.itmedia.co.jp

atmarkit.itmedia.co.jp

852 ms

movePC2SP.js

movePC2SP.js

193 ms

base.css

base.css

632 ms

base.css

base.css

658 ms

top.css

top.css

662 ms

fpcookie

fpcookie

713 ms

cx.js

cx.js

30 ms

cx.cce.js

cx.cce.js

38 ms

base_v2.js

base_v2.js

370 ms

top.js

top.js

429 ms

base.js

base.js

432 ms

top.js

top.js

524 ms

gamServerEnvironment.js

gamServerEnvironment.js

527 ms

gpt.js

gpt.js

104 ms

v1.js

v1.js

762 ms

v1.js

v1.js

701 ms

v1.js

v1.js

620 ms

cx_v2_cce.js

cx_v2_cce.js

525 ms

gnavi.css

gnavi.css

707 ms

gnavi.js

gnavi.js

540 ms

cx_search.js

cx_search.js

571 ms

cx_search_pc.css

cx_search_pc.css

707 ms

masterBodyEnd.js

masterBodyEnd.js

575 ms

smartPhoneHeadLink.js

smartPhoneHeadLink.js

686 ms

s_code.js

s_code.js

689 ms

itmdp_code.js

itmdp_code.js

693 ms

js

js

62 ms

js

js

106 ms

js

js

102 ms

v6_survey.js

v6_survey.js

705 ms

pubads_impl.js

pubads_impl.js

32 ms

gtm.js

gtm.js

85 ms

pcvheader_ait.png

pcvheader_ait.png

659 ms

userpic-266-100x100.png

userpic-266-100x100.png

736 ms

top_news044.jpg

top_news044.jpg

659 ms

top_features_image_1_1719394423.jpg

top_features_image_1_1719394423.jpg

660 ms

parts_top_rightAitEbook1__1_1719394551.jpg

parts_top_rightAitEbook1__1_1719394551.jpg

662 ms

parts_top_rightAitEbook1__1_1716989854.png

parts_top_rightAitEbook1__1_1716989854.png

817 ms

parts_top_rightAitEbook1__1_1713871054.jpg

parts_top_rightAitEbook1__1_1713871054.jpg

680 ms

parts_top_rightAitEbook1__1_1711113400.png

parts_top_rightAitEbook1__1_1711113400.png

813 ms

rc_teemasitebanner_1_1687348083.png

rc_teemasitebanner_1_1687348083.png

965 ms

rc_teemasitebanner_1_1671517745.png

rc_teemasitebanner_1_1671517745.png

816 ms

rc_teemasitebanner_1_1661478210.png

rc_teemasitebanner_1_1661478210.png

817 ms

rc_teemasitebanner_1_1656923912.png

rc_teemasitebanner_1_1656923912.png

1010 ms

rc_teemasitebanner_5_1706753441.jpg

rc_teemasitebanner_5_1706753441.jpg

966 ms

170_itmedia_bgw.gif

170_itmedia_bgw.gif

971 ms

43042345

43042345

146 ms

reborn_linkArrow.gif

reborn_linkArrow.gif

787 ms

ait1509_ulli.png

ait1509_ulli.png

790 ms

rss_reborn_top_ranking_day.json

rss_reborn_top_ranking_day.json

200 ms

rss_reborn_top_ranking_month.json

rss_reborn_top_ranking_month.json

199 ms

v1

v1

640 ms

td.min.js

td.min.js

121 ms

bi.js

bi.js

822 ms

fbevents.js

fbevents.js

119 ms

1.gif

1.gif

637 ms

185005748502834

185005748502834

72 ms

rankingicon01.png

rankingicon01.png

695 ms

rankingicon02.png

rankingicon02.png

698 ms

rankingicon03.png

rankingicon03.png

702 ms

rankingicon04.png

rankingicon04.png

702 ms

rankingicon05.png

rankingicon05.png

706 ms

rankingicon06.png

rankingicon06.png

750 ms

rankingicon07.png

rankingicon07.png

848 ms

rankingicon08.png

rankingicon08.png

852 ms

rankingicon09.png

rankingicon09.png

868 ms

rankingicon10.png

rankingicon10.png

868 ms

Accessibility Review

atmarkit.jp accessibility score

83

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

atmarkit.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

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

SEO Factors

atmarkit.jp SEO score

92

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

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Atmarkit.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 Atmarkit.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

atmarkit.jp

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