Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

customjapan.net

バイクパーツ・純正部品・自転車・自動車部品・工具の仕入れ・通販は カスタムジャパンへ

Page Load Speed

15 sec in total

First Response

665 ms

Resources Loaded

14 sec

Page Rendered

358 ms

customjapan.net screenshot

About Website

Click here to check amazing Customjapan content for Japan. Otherwise, check out these important facts you probably never knew about customjapan.net

オートバイ・バイクパーツから純正対応パーツ、自転車パーツ・自動車補修部品、整備工具の通販サイト。仕入れのコストダウンならカスタムジャパンへ

Visit customjapan.net

Key Findings

We analyzed Customjapan.net page load time and found that the first response time was 665 ms and then it took 14.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

customjapan.net performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.5 s

2/100

10%

LCP (Largest Contentful Paint)

Value16.1 s

0/100

25%

SI (Speed Index)

Value12.7 s

3/100

10%

TBT (Total Blocking Time)

Value860 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.333

34/100

15%

TTI (Time to Interactive)

Value18.6 s

3/100

10%

Network Requests Diagram

customjapan.net

665 ms

top

1736 ms

analytics.js

58 ms

dc.js

78 ms

common.css

648 ms

Our browser made a total of 256 requests to load all elements on the main page. We found that 91% of them (232 requests) were addressed to the original Customjapan.net, 2% (4 requests) were made to Google.com and 2% (4 requests) were made to Rc.kotoha.co.jp. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Customjapan.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 450.0 kB (44%)

Content Size

1.0 MB

After Optimization

571.8 kB

In fact, the total size of Customjapan.net main page is 1.0 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. 50% of websites need less resources to load. Images take 569.7 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 76.3 kB

  • Original 94.0 kB
  • After minification 85.2 kB
  • After compression 17.8 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 76.3 kB or 81% of the original size.

Image Optimization

-27%

Potential reduce by 152.0 kB

  • Original 569.7 kB
  • After minification 417.8 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, Customjapan needs image optimization as it can save up to 152.0 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-56%

Potential reduce by 155.2 kB

  • Original 278.3 kB
  • After minification 240.9 kB
  • After compression 123.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 155.2 kB or 56% of the original size.

CSS Optimization

-83%

Potential reduce by 66.6 kB

  • Original 79.8 kB
  • After minification 63.1 kB
  • After compression 13.2 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. Customjapan.net needs all CSS files to be minified and compressed as it can save up to 66.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 95 (38%)

Requests Now

249

After Optimization

154

The browser has sent 249 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Customjapan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

customjapan.net accessibility score

69

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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>).

Best Practices

customjapan.net best practices score

75

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

Page has valid source maps

SEO Factors

customjapan.net SEO score

82

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 Customjapan.net 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 Customjapan.net 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 Customjapan. 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: