Tools & Wizards About Us
jamtrading.jp screenshot

Report Summary

  • 1

    Performance

    Renders faster than
    19% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

jamtrading.jp

【古着通販】古着屋JAM(ジャム)公式オンラインショップ

Page Load Speed

20.9 sec in total

First Response

538 ms

Resources Loaded

7.6 sec

Page Rendered

12.8 sec

jamtrading.jp screenshot

About Website

Welcome to jamtrading.jp homepage info - get ready to check Jamtrading best content for Japan right away, or after learning these important things about jamtrading.jp

古着屋JAMの公式通販・オンラインショップ。メンズ・レディース・ヴィンテージのスウェットやTシャツ、ラルフローレンなど人気ブランドの古着を販売。古着初心者からヴィンテージマニアまで、誰もが楽しめる日本最大級のインポート古着専門店です。

Visit jamtrading.jp

Key Findings

We analyzed Jamtrading.jp page load time and found that the first response time was 538 ms and then it took 20.4 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

jamtrading.jp performance score

1

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value62.7 s

0/100

25%

SI (Speed Index)

Value52.0 s

0/100

10%

TBT (Total Blocking Time)

Value8,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value2.257

0/100

15%

TTI (Time to Interactive)

Value103.4 s

0/100

10%

Network Requests Diagram

jamtrading.jp

538 ms

jamtrading.jp

979 ms

fs_style.css

190 ms

fs_original.css

196 ms

webstore-vg.js

364 ms

Our browser made a total of 177 requests to load all elements on the main page. We found that 12% of them (22 requests) were addressed to the original Jamtrading.jp, 63% (111 requests) were made to Jamtrading.itembox.design and 20% (35 requests) were made to Image.rakuten.co.jp. The less responsive or slowest element that took the longest time to load (5.3 sec) relates to the external source Image.rakuten.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 604.5 kB (2%)

Content Size

33.0 MB

After Optimization

32.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jamtrading.jp main page is 33.0 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. 80% 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 32.5 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 136.2 kB

  • Original 157.3 kB
  • After minification 126.1 kB
  • After compression 21.0 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. This page needs HTML code to be minified as it can gain 31.2 kB, which is 20% 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 136.2 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 425.1 kB

  • Original 32.5 MB
  • After minification 32.1 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. Jamtrading images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 36.3 kB

  • Original 281.9 kB
  • After minification 281.7 kB
  • After compression 245.6 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 36.3 kB or 13% of the original size.

CSS Optimization

-11%

Potential reduce by 6.8 kB

  • Original 64.7 kB
  • After minification 64.7 kB
  • After compression 57.9 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. Jamtrading.jp needs all CSS files to be minified and compressed as it can save up to 6.8 kB or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (31%)

Requests Now

175

After Optimization

120

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 175 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jamtrading. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jamtrading.jp

jamtrading.jp

538 ms

jamtrading.jp

jamtrading.jp

979 ms

fs_style.css

fs_style.css

190 ms

fs_original.css

fs_original.css

196 ms

webstore-vg.js

webstore-vg.js

364 ms

recommend.js

recommend.js

754 ms

style.css

style.css

200 ms

nouislider.min.css

nouislider.min.css

200 ms

jquery-ui.min.css

jquery-ui.min.css

203 ms

swiper-bundle.min.css

swiper-bundle.min.css

61 ms

autoComplete.02.min.css

autoComplete.02.min.css

76 ms

jquery.min.js

jquery.min.js

45 ms

slick.min.js

slick.min.js

202 ms

nouislider.min.js

nouislider.min.js

59 ms

jquery-ui.min.js

jquery-ui.min.js

202 ms

swiper-bundle.min.js

swiper-bundle.min.js

152 ms

autoComplete.min.js

autoComplete.min.js

80 ms

common.js

common.js

200 ms

autocomplete.js

autocomplete.js

202 ms

dev.js

dev.js

199 ms

js

js

91 ms

header-scrl.js

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202 ms

webstore.js

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1245 ms

logo.svg

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36 ms

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872 ms

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550 ms

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978 ms

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697 ms

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547 ms

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550 ms

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1252 ms

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1264 ms

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1269 ms

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1273 ms

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1970 ms

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1932 ms

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2280 ms

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1933 ms

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2615 ms

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2643 ms

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2845 ms

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148 ms

272 ms

ladies-hotitem-drmartens.jpg

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2438 ms

ladies-hotitem-tailored-jacket.jpg

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2446 ms

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2480 ms

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2453 ms

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2465 ms

brand_champion.jpg

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2889 ms

oneday_logo16-375x540.jpg

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543 ms

%E7%94%9A%E7%94%B0%E7%B4%94%E8%8F%9C-Elulu-by-JAM%E5%8E%9F%E5%AE%BF%E5%BA%97-Elulu-by-JAM%E5%8E%9F%E5%AE%BF%E5%BA%97-37x37.jpg

%E7%94%9A%E7%94%B0%E7%B4%94%E8%8F%9C-Elulu-by-JAM%E5%8E%9F%E5%AE%BF%E5%BA%97-Elulu-by-JAM%E5%8E%9F%E5%AE%BF%E5%BA%97-37x37.jpg

200 ms

oneday_logo15-375x540.jpg

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287 ms

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331 ms

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372 ms

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390 ms

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467 ms

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508 ms

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554 ms

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Photo_24-02-09-12-01-55.242-%E5%8F%A4%E7%9D%80%E5%B1%8BJAM%E7%A6%8F%E5%B2%A1%E5%BA%97-37x37.jpg

577 ms

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645 ms

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IMG_1804-%E5%8F%A4%E7%9D%80%E5%B1%8BJAM%E7%A6%8F%E5%B2%A1%E5%BA%97-37x37.jpg

688 ms

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2458 ms

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2304 ms

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1992 ms

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2089 ms

oldcoach.jpg

oldcoach.jpg

2450 ms

banner_01.jpg

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1980 ms

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1978 ms

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1981 ms

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1979 ms

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1972 ms

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ico_line-wh.svg

1970 ms

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1970 ms

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1852 ms

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1827 ms

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ico_search.svg

1682 ms

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1505 ms

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ico_cart.svg

1503 ms

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1331 ms

ico_men.svg

ico_men.svg

1327 ms

ico_women.svg

ico_women.svg

1328 ms

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ico_arrow-bk.svg

1308 ms

ico_log-re.svg

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1296 ms

ico_service.svg

ico_service.svg

1151 ms

ico_category.svg

ico_category.svg

1111 ms

ico_brand.svg

ico_brand.svg

989 ms

ico_new-item.svg

ico_new-item.svg

824 ms

ico_feature.svg

ico_feature.svg

771 ms

ico_styling.svg

ico_styling.svg

662 ms

ico_blog.svg

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635 ms

ico_media.svg

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405 ms

ico_shop-news.svg

ico_shop-news.svg

303 ms

ico_channel.svg

ico_channel.svg

294 ms

ico_live.svg

ico_live.svg

261 ms

ico_mail.svg

ico_mail.svg

144 ms

ico_first.svg

ico_first.svg

133 ms

ico_guide.svg

ico_guide.svg

69 ms

ico_s-contact.svg

ico_s-contact.svg

69 ms

ico_area.svg

ico_area.svg

68 ms

ico_arrow-bk.svg

ico_arrow-bk.svg

63 ms

ico_search-wh.svg

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61 ms

ico_men-gr.svg

ico_men-gr.svg

58 ms

ico_women-gr.svg

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59 ms

ico_arrow-wh.svg

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57 ms

hotitem-icon01.png

hotitem-icon01.png

238 ms

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77 ms

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rank_bg01.png

598 ms

rank_bg02.png

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945 ms

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949 ms

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986 ms

ico_outer.svg

ico_outer.svg

333 ms

ico_tops.svg

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333 ms

ico_bottoms.svg

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334 ms

ico_shoes.svg

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335 ms

ico_bag.svg

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516 ms

ico_hat.svg

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1111 ms

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517 ms

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518 ms

Accessibility Review

jamtrading.jp accessibility score

83

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

Image elements do not have [alt] attributes

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.

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

jamtrading.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

jamtrading.jp SEO score

90

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 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 Jamtrading.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 Jamtrading.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

jamtrading.jp

Open Graph data is detected on the main page of Jamtrading. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: