Tools & Wizards About Us
rs-duo.jp screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

rs-duo.jp

Page Load Speed

8.6 sec in total

First Response

918 ms

Resources Loaded

7.4 sec

Page Rendered

317 ms

rs-duo.jp screenshot

About Website

Visit rs-duo.jp now to see the best up-to-date Rs Duo content and also check out these interesting facts you probably never knew about rs-duo.jp

ƒŒƒ“ƒ^ƒ‹Žû”[ƒXƒy[ƒX‚c‚t‚n@V‹´“XƒI[ƒvƒ“ ƒgƒ‰ƒ“ƒNƒ‹[ƒ€‚̃pƒCƒIƒjƒAB ¡‚Ȃ珉‰ñŽè”—¿–³—¿ƒLƒƒƒ“ƒy[ƒ“ŽÀŽ{’†I‚²Œ©Šw—\–ñ‚ðƒz[ƒ€ƒy[ƒW‚æ‚è•Ö—˜EŠÈ’P‚É‚¨\ž‚Ý’¸‚¯‚Ü‚·B‚±‚Ì‹@‰ï‚ð‚¨Œ©“¦‚µ‚È‚­I /> <m...

Visit rs-duo.jp

Key Findings

We analyzed Rs-duo.jp page load time and found that the first response time was 918 ms and then it took 7.7 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

rs-duo.jp performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value5.9 s

65/100

10%

Network Requests Diagram

rs-duo.jp

918 ms

jquery.js

1129 ms

rool.js

335 ms

jquery.slider.min.js

338 ms

base.css

545 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 90% of them (47 requests) were addressed to the original Rs-duo.jp, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Googleadservices.com. The less responsive or slowest element that took the longest time to load (5.3 sec) belongs to the original domain Rs-duo.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 92.6 kB (7%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rs-duo.jp main page is 1.4 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. 15% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 21.5 kB

  • Original 26.2 kB
  • After minification 18.2 kB
  • After compression 4.7 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 7.9 kB, which is 30% 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 21.5 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 3.7 kB

  • Original 1.2 MB
  • After minification 1.2 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. Rs Duo images are well optimized though.

JavaScript Optimization

-47%

Potential reduce by 61.7 kB

  • Original 132.3 kB
  • After minification 132.2 kB
  • After compression 70.6 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 61.7 kB or 47% of the original size.

CSS Optimization

-80%

Potential reduce by 5.7 kB

  • Original 7.0 kB
  • After minification 4.4 kB
  • After compression 1.4 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. Rs-duo.jp needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (8%)

Requests Now

50

After Optimization

46

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rs Duo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rs-duo.jp

rs-duo.jp

918 ms

jquery.js

jquery.js

1129 ms

rool.js

rool.js

335 ms

jquery.slider.min.js

jquery.slider.min.js

338 ms

base.css

base.css

545 ms

jquery.slider.css

jquery.slider.css

510 ms

conversion.js

conversion.js

20 ms

head_line01.gif

head_line01.gif

337 ms

84 ms

logo_long.png

logo_long.png

823 ms

tel.png

tel.png

375 ms

black_01_07.gif

black_01_07.gif

384 ms

black_01_08.gif

black_01_08.gif

389 ms

black_01_10.gif

black_01_10.gif

485 ms

main_shinbashi.gif

main_shinbashi.gif

1749 ms

search.gif

search.gif

708 ms

c_company.gif

c_company.gif

703 ms

c_goriyou.gif

c_goriyou.gif

748 ms

c_keiyaku.gif

c_keiyaku.gif

850 ms

c_sarbis.gif

c_sarbis.gif

1043 ms

c_kengaku.gif

c_kengaku.gif

1043 ms

c_qa.gif

c_qa.gif

1079 ms

sabisu.gif

sabisu.gif

1344 ms

owner.gif

owner.gif

1356 ms

syuunou.gif

syuunou.gif

1569 ms

ryokin_01.gif

ryokin_01.gif

1424 ms

ryokin_04.gif

ryokin_04.gif

1407 ms

ryokin_05.gif

ryokin_05.gif

1698 ms

h2_bg.gif

h2_bg.gif

1894 ms

05.jpg

05.jpg

3145 ms

06.jpg

06.jpg

3142 ms

07.jpg

07.jpg

3040 ms

01.jpg

01.jpg

3370 ms

02.jpg

02.jpg

3086 ms

03.jpg

03.jpg

3553 ms

04.jpg

04.jpg

4467 ms

bf01.gif

bf01.gif

3866 ms

bf02.gif

bf02.gif

3926 ms

icon01.gif

icon01.gif

3859 ms

icon02.gif

icon02.gif

4067 ms

icon03.gif

icon03.gif

4210 ms

icon04.gif

icon04.gif

4502 ms

icon05.gif

icon05.gif

4569 ms

icon06.gif

icon06.gif

4661 ms

ga.js

ga.js

13 ms

__utm.gif

__utm.gif

22 ms

43 ms

570_hr.gif

570_hr.gif

4127 ms

bana_photo.jpg

bana_photo.jpg

4755 ms

250_shibuya.jpg

250_shibuya.jpg

5307 ms

footer_bg_line.gif

footer_bg_line.gif

4436 ms

riricle.gif

riricle.gif

4385 ms

Accessibility Review

rs-duo.jp accessibility score

67

Accessibility Issues

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

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

rs-duo.jp best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rs-duo.jp SEO score

67

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    JA

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rs-duo.jp can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Japanese. Our system also found out that Rs-duo.jp main page’s claimed encoding is . 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

rs-duo.jp

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