Access rainbowweb.jp.

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.8 s

100/100

25%

SI (Speed Index)

Value1.9 s

100/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.151

76/100

15%

TTI (Time to Interactive)

Value3.0 s

95/100

10%

rainbowweb.jp

856 ms

main2.css

1139 ms

jquery.lightbox.css

1148 ms

prototype.js

1565 ms

rico.js

1184 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 47% of them (44 requests) were addressed to the original Rainbowweb.jp, 34% (32 requests) were made to Pbs.twimg.com and 10% (9 requests) were made to Abs.twimg.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Rainbowweb.jp.

Content Size

1.2 MB

After Optimization

767.6 kB

In fact, the total size of Rainbowweb.jp main page is 1.2 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. 55% of websites need less resources to load. Images take 744.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 9.9 kB

Original 12.7 kB
After minification 9.4 kB
After compression 2.7 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 3.3 kB, which is 26% 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 9.9 kB or 78% of the original size.

Image Optimization

-12%

Potential reduce by 90.5 kB

Original 744.8 kB
After minification 654.3 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. Obviously, Rainbowweb needs image optimization as it can save up to 90.5 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 298.8 kB

Original 400.7 kB
After minification 316.7 kB
After compression 101.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 298.8 kB or 75% of the original size.

CSS Optimization

-76%

Potential reduce by 26.8 kB

Original 35.4 kB
After minification 28.3 kB
After compression 8.6 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. Rainbowweb.jp needs all CSS files to be minified and compressed as it can save up to 26.8 kB or 76% of the original size.

Requests Now

After Optimization

The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rainbowweb. 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 16 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

<frame> or <iframe> elements do not have a title

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

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

High

Page is blocked from indexing

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 doesn't use legible font sizes

Language and Encoding

Language Detected

N/A
Language Claimed

N/A
Encoding

SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rainbowweb.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) and no language is claimed in <html> or <meta> tags either. Our system also found out that Rainbowweb.jp main page’s claimed encoding is shift_jis. 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

rainbowweb.jp

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

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

rainbowweb.jp

main2.css

jquery.lightbox.css

prototype.js

rico.js

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

rainbowweb.jp

main2.css

jquery.lightbox.css

prototype.js

rico.js

jquery-1.4.1.min.js

jquery.corner.js

iepngfix.js

iepngro.js

jquery.cycle.all.min.js

jquery.inputlimiter.1.2.1.js

jquery.lightbox.js

mnac.php

top.css

news.css

prof.css

disco.css

gallery.css

special.css

event.css

shop.css

request.css

about.css

regist.css

magazine.css

ricoCommon.js

ricoLocale_en.js

mLogo.png

mNews1.png

mProf1.png

mDisc1.png

mGall1.png

mSpec1.png

mShop1.png

mRequ1.png

mAbou1.png

mMaga1.png

loginBt1.png

joinBt1.png

banner_kara.png

banner_april.jpg

banner_dspjapan.jpg

skip.gif

widgets.js