Tools & Wizards About Us

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

americandenki.co.jp

アメリカン電機 - 引掛形配線器具とNEMA規格接続器

Page Load Speed

7.5 sec in total

First Response

526 ms

Resources Loaded

6.5 sec

Page Rendered

502 ms

About Website

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

アメリカン電機ではコンセント・プラグ・コネクタ・OAタップなどの配線器具を製造しています。引掛形・平刃形の配線器具のほか、NEMA規格準拠の配線器具も多く取り揃えています。

Visit americandenki.co.jp

Key Findings

We analyzed Americandenki.co.jp page load time and found that the first response time was 526 ms and then it took 7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

americandenki.co.jp performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.6 s

0/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value540 ms

54/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value31.8 s

0/100

10%

Network Requests Diagram

americandenki.co.jp

526 ms

www.americandenki.co.jp

1185 ms

js

75 ms

cv2sp4m8ym

94 ms

notosansjapanese.css

38 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 73% of them (51 requests) were addressed to the original Americandenki.co.jp, 10% (7 requests) were made to Fonts.gstatic.com and 6% (4 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Americandenki.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 344.7 kB (9%)

Content Size

4.0 MB

After Optimization

3.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Americandenki.co.jp main page is 4.0 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. 45% of websites need less resources to load. Images take 3.3 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 21.9 kB

  • Original 30.1 kB
  • After minification 28.3 kB
  • After compression 8.3 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 21.9 kB or 73% of the original size.

Image Optimization

-1%

Potential reduce by 35.7 kB

  • Original 3.3 MB
  • After minification 3.3 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. Americandenki images are well optimized though.

JavaScript Optimization

-48%

Potential reduce by 275.9 kB

  • Original 573.1 kB
  • After minification 445.6 kB
  • After compression 297.2 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 275.9 kB or 48% of the original size.

CSS Optimization

-16%

Potential reduce by 11.3 kB

  • Original 71.0 kB
  • After minification 71.0 kB
  • After compression 59.8 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. Americandenki.co.jp needs all CSS files to be minified and compressed as it can save up to 11.3 kB or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (49%)

Requests Now

61

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Americandenki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

americandenki.co.jp accessibility score

100

Accessibility Issues

Best Practices

americandenki.co.jp best practices score

83

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

SEO Factors

americandenki.co.jp SEO score

98

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Americandenki.co.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 Americandenki.co.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

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