Tools & Wizards About Us
39n.jp screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

39n.jp

GroupML 無料メーリングリストサービス

Page Load Speed

6.4 sec in total

First Response

924 ms

Resources Loaded

5.2 sec

Page Rendered

274 ms

39n.jp screenshot

About Website

Welcome to 39n.jp homepage info - get ready to check 39 N best content for Japan right away, or after learning these important things about 39n.jp

シンプルな機能のメーリングリストサービス。メンバーのみが投稿可能なメーリングリストを簡単に作成・無料で開設可能

Visit 39n.jp

Key Findings

We analyzed 39n.jp page load time and found that the first response time was 924 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

39n.jp performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.273

45/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

www.39n.jp

924 ms

index.css

371 ms

common.js

1325 ms

common.css

527 ms

index_header_bg.gif

362 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that all of those requests were addressed to 39n.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain 39n.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 86.3 kB (15%)

Content Size

584.5 kB

After Optimization

498.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 39n.jp main page is 584.5 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. Only 5% of websites need less resources to load. Images take 455.1 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 3.3 kB

  • Original 5.3 kB
  • After minification 5.1 kB
  • After compression 2.0 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 3.3 kB or 62% of the original size.

Image Optimization

-0%

Potential reduce by 24 B

  • Original 455.1 kB
  • After minification 455.1 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. 39 N images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 68.9 kB

  • Original 106.8 kB
  • After minification 106.8 kB
  • After compression 37.9 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 68.9 kB or 65% of the original size.

CSS Optimization

-82%

Potential reduce by 14.0 kB

  • Original 17.2 kB
  • After minification 13.7 kB
  • After compression 3.2 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. 39n.jp needs all CSS files to be minified and compressed as it can save up to 14.0 kB or 82% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

14

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 39 N. According to our analytics all requests are already optimized.

Network Requests Diagram

www.39n.jp

www.39n.jp

924 ms

index.css

index.css

371 ms

common.js

common.js

1325 ms

common.css

common.css

527 ms

index_header_bg.gif

index_header_bg.gif

362 ms

com_header_bg.gif

com_header_bg.gif

374 ms

com_header.gif

com_header.gif

578 ms

null.gif

null.gif

392 ms

com_gnavi.png

com_gnavi.png

394 ms

eyecatch.jpg

eyecatch.jpg

1799 ms

index_eyecatch.png

index_eyecatch.png

1038 ms

index_img01.gif

index_img01.gif

1058 ms

index_btn01.gif

index_btn01.gif

930 ms

index_img02.jpg

index_img02.jpg

2278 ms

index_btn02.gif

index_btn02.gif

1144 ms

com_pagetop.gif

com_pagetop.gif

1305 ms

Accessibility Review

39n.jp accessibility score

96

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.

Best Practices

39n.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

39n.jp SEO score

100

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

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 39n.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 39n.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

39n.jp

Open Graph description is not detected on the main page of 39 N. 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: