Access rax.co.jp. RAX～MedicalEsthetic～ラックス

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value6.4 s

41/100

10%

TBT (Total Blocking Time)

Value90 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.408

24/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

rax.co.jp

652 ms

www.rax.co.jp

533 ms

base.css

175 ms

flexslider.css

334 ms

important.css

346 ms

Our browser made a total of 110 requests to load all elements on the main page. We found that 65% of them (71 requests) were addressed to the original Rax.co.jp, 22% (24 requests) were made to Maps.googleapis.com and 6% (7 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Rax.co.jp.

Content Size

2.6 MB

After Optimization

2.2 MB

In fact, the total size of Rax.co.jp main page is 2.6 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. 70% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 23.7 kB

Original 31.5 kB
After minification 28.1 kB
After compression 7.8 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 3.4 kB, which is 11% 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 23.7 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 65.8 kB

Original 2.1 MB
After minification 2.0 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. RAX images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 246.7 kB

Original 417.5 kB
After minification 407.8 kB
After compression 170.8 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 246.7 kB or 59% of the original size.

CSS Optimization

-21%

Potential reduce by 2.1 kB

Original 10.0 kB
After minification 10.0 kB
After compression 7.9 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. Rax.co.jp needs all CSS files to be minified and compressed as it can save up to 2.1 kB or 21% of the original size.

Requests Now

108

After Optimization

The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RAX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

High

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

High

Page is blocked from indexing

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Rax.co.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 Rax.co.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

rax.co.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

RAX～MedicalEsthetic～ラックス

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

rax.co.jp

www.rax.co.jp

base.css

flexslider.css

important.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

rax.co.jp

www.rax.co.jp

base.css

flexslider.css

important.css

rollover2.js

smoothscroll.js

scrollsmoothly.js

alphafilter.js

jquery-1.8.1.min.js

bannerrandam.js

jquery.tools.min.js

jquery.flexslider.js

js

jquery.fancybox.pack.js

jquery.fancybox.css

matm.js

gen_204

ga.js

embed

embed

embed

embed

embed

embed

embed

logo.png

header_navi.gif

g_navi.png

flex_special_n.png

flex_felice.png

flex_img08.jpg

flex_img09.jpg

flex_img06.jpg

top_important2.png

top_important1.png

top_information.png

top_title01.gif

index_contents_bg01.jpg

index_contents_bg02.jpg

top_title02.gif

shop_shibuya_dogenzaka.png

shop_ikebukuro.png