Access rembrandt-hotel.co.jp. 【公式】レンブラントグループホテル　総合サイト

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value29.6 s

0/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value1,770 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value16.9 s

5/100

10%

rembrandt-hotel.co.jp

1204 ms

import.css

366 ms

style.css

545 ms

style_rhh.css

376 ms

jquery.min.js

26 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 79% of them (34 requests) were addressed to the original Rembrandt-hotel.co.jp, 5% (2 requests) were made to Google-analytics.com and 5% (2 requests) were made to Staticxx.facebook.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Rembrandt-hotel.co.jp.

Content Size

1.1 MB

After Optimization

587.2 kB

In fact, the total size of Rembrandt-hotel.co.jp main page is 1.1 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 863.2 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 22.4 kB

Original 30.2 kB
After minification 29.5 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. 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 22.4 kB or 74% of the original size.

Image Optimization

-38%

Potential reduce by 332.1 kB

Original 863.2 kB
After minification 531.1 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, Rembrandt Hotel needs image optimization as it can save up to 332.1 kB or 38% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 78.8 kB

Original 115.3 kB
After minification 112.5 kB
After compression 36.5 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 78.8 kB or 68% of the original size.

CSS Optimization

-87%

Potential reduce by 80.4 kB

Original 92.1 kB
After minification 65.8 kB
After compression 11.7 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. Rembrandt-hotel.co.jp needs all CSS files to be minified and compressed as it can save up to 80.4 kB or 87% of the original size.

Requests Now

After Optimization

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rembrandt Hotel. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

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 Rembrandt-hotel.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 Rembrandt-hotel.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

rembrandt-hotel.co.jp

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

【公式】レンブラントグループホテル 総合サイト

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

rembrandt-hotel.co.jp

import.css

style.css

style_rhh.css

jquery.min.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

rembrandt-hotel.co.jp

import.css

style.css

style_rhh.css

jquery.min.js

jquery.droppy.js

smoothScroll.js

jTabs.min.js

jquery.carouFredSel-6.2.1-packed.js

fonts.css

reset.css

bg.png

TOPbanner250-950_RHA.jpg

TOPbanner250-950_RHO.jpg

TOPbanner250-950_BWRHK.jpg

TOPbanner250-950_BWyokohama.jpg

TOPbanner250-950_BWtokyo.jpg

TOPbanner250-950_RGCG.jpg

bnr_shisetsu40-220_RHA1.jpg

bnr_shisetsu40-220_RHO1.jpg

bnr_shisetsu40-220_BWRHK.jpg

bnr_shisetsu40-220_BWyokohama.jpg

bnr_shisetsu40-220_BWTokyo.jpg

bnr_shisetsu40-220_RGCG.jpg

bnr_shisetsu40-220_ATP.jpg

bnr_shisetsu40-220_ELLCY.jpg

logo_rhh.png

logo_footer.png

bg_h4.jpg

yazi_r_link.png

bg_ttl.png

yazi_t.png

nav_top.png

pdf.png

sdk.js

bg_footer.jpg

analytics.js

collect

collect

ga-audiences

xd_arbiter.php

xd_arbiter.php

Accessibility Review

【公式】レンブラントグループホテル　総合サイト