Tools & Wizards About Us
iosys.co.jp screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

iosys.co.jp

中古スマホ・タブレット販売の【イオシス】｜けっこう安い。

Page Load Speed

26.1 sec in total

First Response

2.6 sec

Resources Loaded

22.7 sec

Page Rendered

804 ms

iosys.co.jp screenshot

About Website

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

2万台超えの豊富な在庫、お得な中古スマホ・白ロムが盛りだくさん！イオシスは創業25年以上、東京秋葉原、新宿・大阪日本橋・名古屋大須・福岡天神の店舗かネット通販でお買い物いただけます。人気の最新スマホから格安SIMフリー、大画面タブレットまでお取り揃え！

Visit iosys.co.jp

Key Findings

We analyzed Iosys.co.jp page load time and found that the first response time was 2.6 sec and then it took 23.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

iosys.co.jp performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value1,050 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.068

96/100

15%

TTI (Time to Interactive)

Value19.4 s

2/100

10%

Network Requests Diagram

iosys.co.jp

2559 ms

normalize.css

349 ms

bootstrap.min.css

533 ms

docs.css

358 ms

font-awesome.min.css

374 ms

Our browser made a total of 262 requests to load all elements on the main page. We found that 76% of them (199 requests) were addressed to the original Iosys.co.jp, 15% (40 requests) were made to Pbs.twimg.com and 2% (5 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (5.3 sec) belongs to the original domain Iosys.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 818.2 kB (13%)

Content Size

6.2 MB

After Optimization

5.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Iosys.co.jp main page is 6.2 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.4 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 165.9 kB

  • Original 185.0 kB
  • After minification 161.5 kB
  • After compression 19.2 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 23.6 kB, which is 13% 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 165.9 kB or 90% of the original size.

Image Optimization

-3%

Potential reduce by 186.3 kB

  • Original 5.4 MB
  • After minification 5.2 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. Iosys images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 240.4 kB

  • Original 360.2 kB
  • After minification 348.7 kB
  • After compression 119.8 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 240.4 kB or 67% of the original size.

CSS Optimization

-84%

Potential reduce by 225.7 kB

  • Original 268.7 kB
  • After minification 251.5 kB
  • After compression 43.1 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. Iosys.co.jp needs all CSS files to be minified and compressed as it can save up to 225.7 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (12%)

Requests Now

259

After Optimization

227

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 259 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iosys. 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 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

iosys.co.jp

iosys.co.jp

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Accessibility Review

iosys.co.jp accessibility score

61

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

[id] attributes on active, focusable elements are not unique

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

iosys.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

iosys.co.jp 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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Iosys.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 Iosys.co.jp main page’s claimed encoding is euc-jp. 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

iosys.co.jp

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