Tools & Wizards About Us
trefac.jp screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

trefac.jp

トレファク公式ファッション通販【TREFAC FASHION】｜ブランド品や人気の古着を販売

Page Load Speed

6.6 sec in total

First Response

10 ms

Resources Loaded

5.8 sec

Page Rendered

797 ms

trefac.jp screenshot

About Website

Visit trefac.jp now to see the best up-to-date TREFAC content for Japan and also check out these interesting facts you probably never knew about trefac.jp

トレファク公式ブランド・古着オンラインストア【TREFAC FASHION (トレファクファッション)】メンズ、レディース、ブランド、ジャンル問わず毎日大量入荷中。未使用品も多数取り扱い。

Visit trefac.jp

Key Findings

We analyzed Trefac.jp page load time and found that the first response time was 10 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

trefac.jp performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value14.0 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value1,660 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

Network Requests Diagram

trefac.jp

10 ms

www.trefac.jp

10 ms

www.trefac.jp

612 ms

gtm.js

94 ms

normalize.css

586 ms

Our browser made a total of 110 requests to load all elements on the main page. We found that 87% of them (96 requests) were addressed to the original Trefac.jp, 3% (3 requests) were made to Ajax.googleapis.com and 3% (3 requests) were made to Trefac-f-s.snva.jp. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Trefac.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 174.2 kB (17%)

Content Size

1.0 MB

After Optimization

874.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Trefac.jp 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. 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 697.6 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 150.4 kB

  • Original 166.8 kB
  • After minification 107.2 kB
  • After compression 16.3 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 59.5 kB, which is 36% 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 150.4 kB or 90% of the original size.

Image Optimization

-3%

Potential reduce by 23.0 kB

  • Original 697.6 kB
  • After minification 674.6 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. TREFAC images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 699 B

  • Original 165.2 kB
  • After minification 165.2 kB
  • After compression 164.5 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

-1%

Potential reduce by 130 B

  • Original 19.1 kB
  • After minification 19.1 kB
  • After compression 19.0 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. Trefac.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 36 (34%)

Requests Now

105

After Optimization

69

  • Images
  • JavaScript
  • CSS

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TREFAC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

trefac.jp

trefac.jp

10 ms

www.trefac.jp

www.trefac.jp

10 ms

www.trefac.jp

www.trefac.jp

612 ms

gtm.js

gtm.js

94 ms

normalize.css

normalize.css

586 ms

layout.css

layout.css

462 ms

design.css

design.css

456 ms

common.css

common.css

176 ms

colorAndPrice.css

colorAndPrice.css

180 ms

splide.min.css

splide.min.css

31 ms

top.css

top.css

180 ms

jquery.min.js

jquery.min.js

39 ms

jquery.cycle.all.js

jquery.cycle.all.js

906 ms

jquery.cookie.js

jquery.cookie.js

769 ms

jquery-ui.min.js

jquery-ui.min.js

43 ms

common.js

common.js

770 ms

search-modal.js

search-modal.js

1040 ms

splide.min.js

splide.min.js

31 ms

jquery.tools.min.js

jquery.tools.min.js

1044 ms

onscroll.js

onscroll.js

1167 ms

favcommon.js

favcommon.js

1062 ms

top.js

top.js

1206 ms

naviplusSuggest.css

naviplusSuggest.css

1345 ms

636 ms

css2

css2

49 ms

jquery-ui.css

jquery-ui.css

5 ms

accd_ttl.png

accd_ttl.png

594 ms

pc_tff_logo.png

pc_tff_logo.png

870 ms

icn_close_01.svg

icn_close_01.svg

1022 ms

icn_search_wt.svg

icn_search_wt.svg

1041 ms

icn_shop.svg

icn_shop.svg

711 ms

icn_user.svg

icn_user.svg

1035 ms

icn_fav_bl_off.svg

icn_fav_bl_off.svg

861 ms

icn_cart_b.svg

icn_cart_b.svg

885 ms

summer_recommend_2024_topbnr.webp

summer_recommend_2024_topbnr.webp

1155 ms

530-530_vintage-tee.jpg

530-530_vintage-tee.jpg

1738 ms

530-530_unused.jpg

530-530_unused.jpg

1613 ms

530-530_sneaker_202309.jpg

530-530_sneaker_202309.jpg

1483 ms

530-530_vtgmilitary.jpg

530-530_vtgmilitary.jpg

1907 ms

530-530_brandbag.jpg

530-530_brandbag.jpg

1334 ms

otherservice_trefaconline.jpg

otherservice_trefaconline.jpg

1888 ms

fromjapan_square.png

fromjapan_square.png

1627 ms

selected_luxury_subbnr.jpg

selected_luxury_subbnr.jpg

1752 ms

vintage_LP_subbnr_.jpg

vintage_LP_subbnr_.jpg

2051 ms

3090047420630370_01_568.jpeg

3090047420630370_01_568.jpeg

1634 ms

icn_fav_or_off.svg

icn_fav_or_off.svg

2218 ms

3090047979695370_01_7515.jpeg

3090047979695370_01_7515.jpeg

1743 ms

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1746 ms

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1749 ms

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1753 ms

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1755 ms

3037001639622445_01_2145.jpeg

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1756 ms

3090047580457370_01_8944.jpeg

3090047580457370_01_8944.jpeg

1757 ms

reuse_ttl.png

reuse_ttl.png

587 ms

3016008415934445_01_5343.jpeg

3016008415934445_01_5343.jpeg

1736 ms

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFBEj75g.woff

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFBEj75g.woff

38 ms

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFPYk75g.woff

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFPYk75g.woff

88 ms

3049003879111289_01_8306.jpeg

3049003879111289_01_8306.jpeg

1605 ms

1014009646069014_01_5667.jpeg

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1608 ms

1022007433017026_01_4327.jpeg

1022007433017026_01_4327.jpeg

1472 ms

1029005768486034_01_5768.jpeg

1029005768486034_01_5768.jpeg

1340 ms

3037001595584445_01_7985.jpeg

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1336 ms

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1320 ms

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1215 ms

3037001554871445_01_6991.jpeg

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1179 ms

1029005510030034_01_7338.jpeg

1029005510030034_01_7338.jpeg

1063 ms

1029005219148034_01_3174.jpeg

1029005219148034_01_3174.jpeg

1026 ms

suggest.js

suggest.js

294 ms

search.js

search.js

581 ms

1061002954158640_01_786.jpeg

1061002954158640_01_786.jpeg

918 ms

1014009620120014_01_1960.jpeg

1014009620120014_01_1960.jpeg

915 ms

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899 ms

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768 ms

1061003162446640_01_693.jpeg

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753 ms

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753 ms

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636 ms

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459 ms

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313 ms

3090052044302518_01_762.jpeg

3090052044302518_01_762.jpeg

186 ms

otherservice_01.jpg

otherservice_01.jpg

461 ms

otherservice_02.jpg

otherservice_02.jpg

600 ms

ftlogo_instagram.svg

ftlogo_instagram.svg

299 ms

ftlogo_x.svg

ftlogo_x.svg

311 ms

ftlogo_sougou.svg

ftlogo_sougou.svg

875 ms

ftlogo_style.svg

ftlogo_style.svg

453 ms

ftlogo_sports.svg

ftlogo_sports.svg

742 ms

ftlogo_bracolle.svg

ftlogo_bracolle.svg

484 ms

ftlogo_uselet.svg

ftlogo_uselet.svg

1037 ms

ftlogo_market.svg

ftlogo_market.svg

1051 ms

ftlogo_shuccyokaitori.svg

ftlogo_shuccyokaitori.svg

627 ms

ftlogo_regacy.svg

ftlogo_regacy.svg

628 ms

ftlogo_hikkoshi.svg

ftlogo_hikkoshi.svg

1212 ms

ftlogo_fudousan.svg

ftlogo_fudousan.svg

1211 ms

ftlogo_cariru.svg

ftlogo_cariru.svg

877 ms

ftlogo_carirubf.svg

ftlogo_carirubf.svg

1004 ms

ftlogo_kindal.svg

ftlogo_kindal.svg

1462 ms

ftlogo_pickup.svg

ftlogo_pickup.svg

1149 ms

ftlogo_kinburry.svg

ftlogo_kinburry.svg

1173 ms

ftlogo_golfkids.svg

ftlogo_golfkids.svg

1188 ms

ftlogo_golfking.svg

ftlogo_golfking.svg

1293 ms

ftlogo_sougou-thailand.svg

ftlogo_sougou-thailand.svg

1752 ms

ftlogo_sougou-taiwan.svg

ftlogo_sougou-taiwan.svg

1763 ms

ftlogo_sougou-ec.svg

ftlogo_sougou-ec.svg

1340 ms

ftlogo_fashion-ec.svg

ftlogo_fashion-ec.svg

1777 ms

icn_atn_gr_l.svg

icn_atn_gr_l.svg

1871 ms

icn_arw_b02.svg

icn_arw_b02.svg

1775 ms

icn_yen_bl.svg

icn_yen_bl.svg

2028 ms

icn_atn_rl.svg

icn_atn_rl.svg

1888 ms

icn_arw_b01.svg

icn_arw_b01.svg

2334 ms

icn_arw_b03.svg

icn_arw_b03.svg

1912 ms

Accessibility Review

trefac.jp accessibility score

89

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

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

trefac.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

High

Page has valid source maps

SEO Factors

trefac.jp SEO score

76

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 doesn't use 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 Trefac.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 Trefac.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

trefac.jp

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