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39n.jp screenshot

Report Summary

  • 96

    Performance

    Renders faster than
    94% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

39n.jp

GroupML 無料メーリングリスト サービス

Page Load Speed

2.9 sec in total

First Response

530 ms

Resources Loaded

2.2 sec

Page Rendered

221 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 530 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

39n.jp performance score

96

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value3.9 s

83/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

39n.jp

530 ms

groupml.jp

929 ms

bootstrap.css

642 ms

style.css

497 ms

jquery-3.7.1.min.js

701 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that 14% of them (1 request) were addressed to the original 39n.jp, 86% (6 requests) were made to Groupml.jp. The less responsive or slowest element that took the longest time to load (929 ms) relates to the external source Groupml.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 12.1 kB (14%)

Content Size

83.3 kB

After Optimization

71.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of 39n.jp main page is 83.3 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. Only 10% of websites need less resources to load. Javascripts take 46.1 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 10.1 kB

  • Original 13.8 kB
  • After minification 11.1 kB
  • After compression 3.7 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 2.7 kB, which is 20% 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 10.1 kB or 73% of the original size.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 46.1 kB
  • After minification 46.1 kB
  • After compression 46.1 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

-8%

Potential reduce by 2.0 kB

  • Original 23.5 kB
  • After minification 23.5 kB
  • After compression 21.5 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. 39n.jp has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • JavaScript
  • CSS

The browser has sent 5 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

39n.jp

39n.jp

530 ms

groupml.jp

groupml.jp

929 ms

bootstrap.css

bootstrap.css

642 ms

style.css

style.css

497 ms

jquery-3.7.1.min.js

jquery-3.7.1.min.js

701 ms

jquery-migrate-3.4.0.min.js

jquery-migrate-3.4.0.min.js

492 ms

bootstrap.min.js

bootstrap.min.js

495 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

92

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

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

    UTF-8

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 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

39n.jp

Open Graph data is detected on the main page of 39 N. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: