Access operacity.jp. 東京オペラシティコンサートホール／リサイタルホール／アートギャラリー

Report Summary

About Website

Click here to check amazing Operacity content for Japan. Otherwise, check out these important facts you probably never knew about operacity.jp

西新宿・初台にある複合文化施設「東京オペラシティ」。コンサートホール／リサイタルホールのコンサート情報。アートギャラリーの展覧会情報。Arts友の会情報など。

Visit operacity.jp

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.092

92/100

15%

TTI (Time to Interactive)

Value13.3 s

12/100

10%

operacity.jp

562 ms

www.operacity.jp

1406 ms

analytics.js

21 ms

js

73 ms

swiper-bundle.min.css

372 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 92% of them (34 requests) were addressed to the original Operacity.jp, 5% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Operacity.jp.

Content Size

3.0 MB

After Optimization

2.6 MB

In fact, the total size of Operacity.jp main page is 3.0 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. 25% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 24.1 kB

Original 30.7 kB
After minification 25.7 kB
After compression 6.6 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 5.0 kB, which is 16% 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 24.1 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 9.5 kB

Original 2.5 MB
After minification 2.5 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. Operacity images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 190.4 kB

Original 292.2 kB
After minification 292.2 kB
After compression 101.7 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 190.4 kB or 65% of the original size.

CSS Optimization

-85%

Potential reduce by 187.8 kB

Original 222.0 kB
After minification 191.6 kB
After compression 34.2 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. Operacity.jp needs all CSS files to be minified and compressed as it can save up to 187.8 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Operacity. 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 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

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

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

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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 Operacity.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 Operacity.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

operacity.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

東京オペラシティ コンサートホール／リサイタルホール／アートギャラリー

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)