Tools & Wizards About Us
sekigin.jp screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

sekigin.jp

技術情報館「SEKIGIN」(セキジン)｜鉄道や道路を中心にインフラの歴史と現状，鋼橋の維持管理，鋼を中心とする金属腐食，防食・防せいに用いる材料として塗料・塗装，めっき，溶射などの技術，生活の中の科学に関連する基礎化学・物理など，技術者に役立つ情報提供を目的とするサイトである。

Page Load Speed

2.3 sec in total

First Response

731 ms

Resources Loaded

1.1 sec

Page Rendered

419 ms

sekigin.jp screenshot

About Website

Visit sekigin.jp now to see the best up-to-date SEKIGIN content for Japan and also check out these interesting facts you probably never knew about sekigin.jp

技術情報館 SIKIGIN（セキジン）では，道路，鉄道を初めとする社会資本の維持管理に資することを目的に，鉄道，道路，港湾，電力などのインフラの歴史と現状の紹介，鋼橋など鋼構造物の設計・製造・維持・管理・腐食・防食について，総合的な技術情報提供を目的に活動します。特に，維持管理技術者が不得意とする腐食，防食技術の理解を助けるため，金属材料，腐食現象，防食対策を紹介します。さらには，インフラに関連す...

Visit sekigin.jp

Key Findings

We analyzed Sekigin.jp page load time and found that the first response time was 731 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

sekigin.jp performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

48/100

25%

SI (Speed Index)

Value4.3 s

75/100

10%

TBT (Total Blocking Time)

Value2,700 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.378

28/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

sekigin.jp

731 ms

style1.css

328 ms

adsbygoogle.js

48 ms

gradation1.png

166 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that 75% of them (3 requests) were addressed to the original Sekigin.jp, 25% (1 request) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (731 ms) belongs to the original domain Sekigin.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 48.6 kB (34%)

Content Size

142.7 kB

After Optimization

94.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sekigin.jp main page is 142.7 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 63.6 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 34.9 kB

  • Original 44.0 kB
  • After minification 32.7 kB
  • After compression 9.0 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. This page needs HTML code to be minified as it can gain 11.3 kB, which is 26% 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 34.9 kB or 79% of the original size.

Image Optimization

-30%

Potential reduce by 8.8 kB

  • Original 29.4 kB
  • After minification 20.7 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. Obviously, SEKIGIN needs image optimization as it can save up to 8.8 kB or 30% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 20 B

  • Original 63.6 kB
  • After minification 63.6 kB
  • After compression 63.6 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

-86%

Potential reduce by 4.9 kB

  • Original 5.7 kB
  • After minification 2.5 kB
  • After compression 813 B

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. Sekigin.jp needs all CSS files to be minified and compressed as it can save up to 4.9 kB or 86% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

  • Images
  • JavaScript
  • CSS

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SEKIGIN. According to our analytics all requests are already optimized.

Network Requests Diagram

sekigin.jp

sekigin.jp

731 ms

style1.css

style1.css

328 ms

adsbygoogle.js

adsbygoogle.js

48 ms

gradation1.png

gradation1.png

166 ms

Accessibility Review

sekigin.jp accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

sekigin.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

High

Page has valid source maps

SEO Factors

sekigin.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 Sekigin.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 Sekigin.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

sekigin.jp

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