Tools & Wizards About Us
rs-tec.jp screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

rs-tec.jp

株式会社 RSテクノロジーズ

Page Load Speed

5.4 sec in total

First Response

509 ms

Resources Loaded

4.3 sec

Page Rendered

641 ms

rs-tec.jp screenshot

About Website

Click here to check amazing Rs Tec content for Japan. Otherwise, check out these important facts you probably never knew about rs-tec.jp

再生ウェーハ世界トップシェアのRSテクノロジーズ。シリコンウェーハ再生加工を始めとして、プライムシリコンウェーハや半導体関連消耗部材の製造販売などを行っています。

Visit rs-tec.jp

Key Findings

We analyzed Rs-tec.jp page load time and found that the first response time was 509 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

rs-tec.jp performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value19.8 s

0/100

25%

SI (Speed Index)

Value15.6 s

0/100

10%

TBT (Total Blocking Time)

Value810 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value17.6 s

4/100

10%

Network Requests Diagram

rs-tec.jp

509 ms

rs-tec.jp

694 ms

reset.css

489 ms

common.css

490 ms

index.css

508 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 65% of them (24 requests) were addressed to the original Rs-tec.jp, 11% (4 requests) were made to Google.com and 5% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Rs-tec.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 62.0 kB (4%)

Content Size

1.6 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rs-tec.jp main page is 1.6 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. 35% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 19.6 kB

  • Original 25.8 kB
  • After minification 22.5 kB
  • After compression 6.2 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 3.3 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 19.6 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 16.2 kB

  • Original 1.4 MB
  • After minification 1.3 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 Tec images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 19.5 kB

  • Original 245.4 kB
  • After minification 245.4 kB
  • After compression 225.9 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

-33%

Potential reduce by 6.6 kB

  • Original 20.0 kB
  • After minification 20.0 kB
  • After compression 13.4 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-tec.jp needs all CSS files to be minified and compressed as it can save up to 6.6 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (59%)

Requests Now

34

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rs Tec. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rs-tec.jp

rs-tec.jp

509 ms

rs-tec.jp

rs-tec.jp

694 ms

reset.css

reset.css

489 ms

common.css

common.css

490 ms

index.css

index.css

508 ms

swiper-bundle.min.css

swiper-bundle.min.css

32 ms

gtag.js

gtag.js

511 ms

js

js

63 ms

jquery.js

jquery.js

904 ms

lazyload.min.js

lazyload.min.js

591 ms

function.js

function.js

998 ms

include.js

include.js

1008 ms

swiper-bundle.min.js

swiper-bundle.min.js

1348 ms

index.js

index.js

1030 ms

XJStorageBase.js

XJStorageBase.js

1102 ms

XJStorageNewsTop.js

XJStorageNewsTop.js

1410 ms

swiper-bundle.min.css

swiper-bundle.min.css

17 ms

fonts.css

fonts.css

1039 ms

css2

css2

30 ms

css2

css2

46 ms

mv_wafer_pc.jpg

mv_wafer_pc.jpg

1558 ms

mv_ecology_pc.jpg

mv_ecology_pc.jpg

1298 ms

mv_leading_pc.jpg

mv_leading_pc.jpg

986 ms

bnr_eagles.png

bnr_eagles.png

731 ms

header.html

header.html

489 ms

footer.html

footer.html

528 ms

inner_sub_nav.html

inner_sub_nav.html

993 ms

font

font

39 ms

font

font

59 ms

rst.ttf

rst.ttf

1029 ms

cse.js

cse.js

50 ms

logo_pc.png

logo_pc.png

633 ms

cse_element__ja.js

cse_element__ja.js

22 ms

default+ja.css

default+ja.css

61 ms

default.css

default.css

67 ms

async-ads.js

async-ads.js

32 ms

clear.png

clear.png

17 ms

Accessibility Review

rs-tec.jp accessibility score

86

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

Buttons do not have an accessible name

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

rs-tec.jp best practices score

92

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

Page has valid source maps

SEO Factors

rs-tec.jp SEO score

92

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 uses legible font sizes

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 Rs-tec.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 Rs-tec.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

rs-tec.jp

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