Tools & Wizards About Us
amazon.jp screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

amazon.jp

Amazon | 本, ファッション, 家電から食品まで | アマゾン

Page Load Speed

1 sec in total

First Response

142 ms

Resources Loaded

816 ms

Page Rendered

66 ms

amazon.jp screenshot

About Website

Click here to check amazing Amazon content for Japan. Otherwise, check out these important facts you probably never knew about amazon.jp

Amazon.co.jp 公式サイト。アマゾンで本, 日用品, ファッション, 食品, ベビー用品, カー用品ほか一億種の商品をいつでもお安く。通常配送無料(一部を除く)

Visit amazon.jp

Key Findings

We analyzed Amazon.jp page load time and found that the first response time was 142 ms and then it took 882 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

amazon.jp performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

38/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value540 ms

54/100

30%

CLS (Cumulative Layout Shift)

Value0.119

85/100

15%

TTI (Time to Interactive)

Value12.5 s

14/100

10%

Network Requests Diagram

amazon.jp

142 ms

amazon.jp

264 ms

www.amazon.co.jp

102 ms

AmazonUI-3c913031596ca78a3768f4e934b1cc02ce238101.secure.min._V1_.css

21 ms

requestId=8XJW2BXZVVWG46N273TZ&js=1

272 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that 18% of them (2 requests) were addressed to the original Amazon.jp, 45% (5 requests) were made to Images-na.ssl-images-amazon.com and 18% (2 requests) were made to Images-fe.ssl-images-amazon.com. The less responsive or slowest element that took the longest time to load (272 ms) relates to the external source Fls-fe.amazon.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 5.6 kB (8%)

Content Size

66.2 kB

After Optimization

60.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Amazon.jp main page is 66.2 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. CSS take 23.2 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 5.4 kB

  • Original 7.6 kB
  • After minification 5.6 kB
  • After compression 2.2 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 2.0 kB, which is 27% 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 5.4 kB or 71% of the original size.

Image Optimization

-0%

Potential reduce by 110 B

  • Original 22.7 kB
  • After minification 22.6 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. Amazon images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 46 B

  • Original 12.7 kB
  • After minification 12.7 kB
  • After compression 12.7 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

-0%

Potential reduce by 14 B

  • Original 23.2 kB
  • After minification 23.2 kB
  • After compression 23.1 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. Amazon.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (38%)

Requests Now

8

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Amazon. 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 as a result speed up the page load time.

Network Requests Diagram

amazon.jp

amazon.jp

142 ms

amazon.jp

amazon.jp

264 ms

www.amazon.co.jp

www.amazon.co.jp

102 ms

AmazonUI-3c913031596ca78a3768f4e934b1cc02ce238101.secure.min._V1_.css

AmazonUI-3c913031596ca78a3768f4e934b1cc02ce238101.secure.min._V1_.css

21 ms

requestId=8XJW2BXZVVWG46N273TZ&js=1

requestId=8XJW2BXZVVWG46N273TZ&js=1

272 ms

csm-captcha-instrumentation.min.js

csm-captcha-instrumentation.min.js

20 ms

rd-script-6d68177fa6061598e9509dc4b5bdd08d.js

rd-script-6d68177fa6061598e9509dc4b5bdd08d.js

23 ms

aui_sprite_0007-1x._V383827579_.png

aui_sprite_0007-1x._V383827579_.png

9 ms

Captcha_ftjyykgkhb.jpg

Captcha_ftjyykgkhb.jpg

12 ms

ue-base-1c399ad9886cab69575e1e5ee15c61a1._V313498596_.js

ue-base-1c399ad9886cab69575e1e5ee15c61a1._V313498596_.js

3 ms

ClientSideMetricsAUIJavascript-51171fbdd28e1a7a61e922e8f0272af8bc74d37b.secure.variant-desktop-session-snapshot-keypress.min._V2_.js

ClientSideMetricsAUIJavascript-51171fbdd28e1a7a61e922e8f0272af8bc74d37b.secure.variant-desktop-session-snapshot-keypress.min._V2_.js

3 ms

Accessibility Review

amazon.jp accessibility score

94

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

amazon.jp best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

amazon.jp SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    JP

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Amazon.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed language. Our system also found out that Amazon.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

amazon.jp

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