Tools & Wizards About Us
rockinstar.jp screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

rockinstar.jp

rockin'star★公式サイト｜キャラクター×ROCKのTシャツブランド ロッキンスター

Page Load Speed

8.3 sec in total

First Response

472 ms

Resources Loaded

7.6 sec

Page Rendered

269 ms

rockinstar.jp screenshot

About Website

Welcome to rockinstar.jp homepage info - get ready to check Rockin Star best content for Indonesia right away, or after learning these important things about rockinstar.jp

ROCKを自由に表現するアパレルブランド、rockin'star★（ロッキンスター ）の公式サイトです。ディズニー・スヌーピー・ドラえもんなどのキャラクターや、クリエイターとROCKがコラボレーションしたアイテムを展開！フェスやライブにぴったりのTシャツや小物をご紹介しています。

Visit rockinstar.jp

Key Findings

We analyzed Rockinstar.jp page load time and found that the first response time was 472 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

rockinstar.jp performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

5/100

25%

SI (Speed Index)

Value15.3 s

1/100

10%

TBT (Total Blocking Time)

Value670 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.787

5/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

rockinstar.jp

472 ms

rockinstar.jp

5568 ms

classic-themes.min.css

158 ms

timer.js

450 ms

swiper.css

191 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 93% of them (51 requests) were addressed to the original Rockinstar.jp, 2% (1 request) were made to Code.jquery.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Rockinstar.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 188.2 kB (21%)

Content Size

903.6 kB

After Optimization

715.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rockinstar.jp main page is 903.6 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. 40% of websites need less resources to load. Images take 683.5 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 34.2 kB

  • Original 43.6 kB
  • After minification 39.3 kB
  • After compression 9.4 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 34.2 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 15.7 kB

  • Original 683.5 kB
  • After minification 667.8 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. Rockin Star images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 80.7 kB

  • Original 107.8 kB
  • After minification 106.1 kB
  • After compression 27.1 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 80.7 kB or 75% of the original size.

CSS Optimization

-84%

Potential reduce by 57.6 kB

  • Original 68.7 kB
  • After minification 56.7 kB
  • After compression 11.1 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. Rockinstar.jp needs all CSS files to be minified and compressed as it can save up to 57.6 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (40%)

Requests Now

53

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rockin Star. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rockinstar.jp

rockinstar.jp

472 ms

rockinstar.jp

rockinstar.jp

5568 ms

classic-themes.min.css

classic-themes.min.css

158 ms

timer.js

timer.js

450 ms

swiper.css

swiper.css

191 ms

common.css

common.css

192 ms

top.css

top.css

465 ms

editor.css

editor.css

490 ms

jquery-3.1.0.min.js

jquery-3.1.0.min.js

22 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

566 ms

swiper.min.js

swiper.min.js

750 ms

js.cookie.js

js.cookie.js

596 ms

common.js

common.js

605 ms

top.js

top.js

594 ms

gtm.js

gtm.js

131 ms

F3PFF-EJKBG-XTMRY-6QBED-6SNGS

F3PFF-EJKBG-XTMRY-6QBED-6SNGS

265 ms

logo_header-1.png

logo_header-1.png

51 ms

btn_menu_off.png

btn_menu_off.png

206 ms

sns_line.png

sns_line.png

241 ms

sns_twitter.png

sns_twitter.png

112 ms

sns_faceook.png

sns_faceook.png

122 ms

sns_instagram.png

sns_instagram.png

116 ms

sns_mail.png

sns_mail.png

137 ms

btn_search.png

btn_search.png

123 ms

btn_menu_on.png

btn_menu_on.png

156 ms

slide202309_coalow_1.jpg

slide202309_coalow_1.jpg

564 ms

slide202309_tshirts_2.gif

slide202309_tshirts_2.gif

765 ms

slide202309_sox_3.gif

slide202309_sox_3.gif

666 ms

arrow_r.png

arrow_r.png

210 ms

arrow_l.png

arrow_l.png

217 ms

product_418.jpg

product_418.jpg

375 ms

product_419.jpg

product_419.jpg

247 ms

product_420.jpg

product_420.jpg

391 ms

bnr_hotitem.jpg

bnr_hotitem.jpg

428 ms

bnr_specialitem.jpg

bnr_specialitem.jpg

382 ms

bnr_sale.jpg

bnr_sale.jpg

390 ms

product_39.jpg

product_39.jpg

397 ms

product_45.jpg

product_45.jpg

398 ms

product_51.jpg

product_51.jpg

403 ms

product_17.jpg

product_17.jpg

404 ms

product_93.jpg

product_93.jpg

409 ms

product_58.jpg

product_58.jpg

410 ms

product_04.jpg

product_04.jpg

415 ms

product_128.jpg

product_128.jpg

415 ms

product_49.jpg

product_49.jpg

421 ms

product_94.jpg

product_94.jpg

421 ms

product_57.jpg

product_57.jpg

381 ms

product_28.jpg

product_28.jpg

379 ms

footer_logo.png

footer_logo.png

366 ms

arrow_page_top.png

arrow_page_top.png

338 ms

logo_header.png

logo_header.png

341 ms

slide202309_coalow_1.jpg

slide202309_coalow_1.jpg

505 ms

slide202309_tshirts_2.gif

slide202309_tshirts_2.gif

776 ms

slide202309_sox_3.gif

slide202309_sox_3.gif

720 ms

config.json

config.json

52 ms

Accessibility Review

rockinstar.jp accessibility score

82

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.

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

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

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

rockinstar.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

rockinstar.jp SEO score

98

Search Engine Optimization Advices

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 Rockinstar.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 Rockinstar.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

rockinstar.jp

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