Report Summary

  • 30

    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
    57% 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

3.8 sec in total

First Response

650 ms

Resources Loaded

3 sec

Page Rendered

147 ms

americandenki.co.jp screenshot

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 650 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

americandenki.co.jp performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value16.3 s

0/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

Network Requests Diagram

americandenki.co.jp

650 ms

format.css

432 ms

note2.css

361 ms

container.css

376 ms

fix_ie_hover.js

379 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 90% of them (27 requests) were addressed to the original Americandenki.co.jp, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Adobe.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Americandenki.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 106.2 kB (37%)

Content Size

287.1 kB

After Optimization

180.9 kB

In fact, the total size of Americandenki.co.jp main page is 287.1 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. 25% of websites need less resources to load. Images take 151.2 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 9.0 kB

  • Original 13.1 kB
  • After minification 12.3 kB
  • After compression 4.0 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 9.0 kB or 69% of the original size.

Image Optimization

-4%

Potential reduce by 6.5 kB

  • Original 151.2 kB
  • After minification 144.7 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. Americandenki images are well optimized though.

JavaScript Optimization

-51%

Potential reduce by 24.4 kB

  • Original 47.3 kB
  • After minification 35.9 kB
  • After compression 23.0 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 24.4 kB or 51% of the original size.

CSS Optimization

-88%

Potential reduce by 66.3 kB

  • Original 75.4 kB
  • After minification 61.8 kB
  • After compression 9.1 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 66.3 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (31%)

Requests Now

29

After Optimization

20

The browser has sent 29 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 4 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

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

    SHIFT_JIS

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 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

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: