Report Summary

  • 25

    Performance

    Renders faster than
    45% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

theaterhouse.co.jp

プロジェクタースクリーン専門店《公式》シアターハウス

Page Load Speed

10.3 sec in total

First Response

1.3 sec

Resources Loaded

8.3 sec

Page Rendered

709 ms

theaterhouse.co.jp screenshot

About Website

Visit theaterhouse.co.jp now to see the best up-to-date Theaterhouse content for Japan and also check out these interesting facts you probably never knew about theaterhouse.co.jp

日本製プロジェクタースクリーンの通販なら!電動スクリーン、手動スクリーン、モバイルスクリーンまで。最大220インチ、 約1000種類の商品ラインナップ。累計実績10万件以上。10年メーカー保証。丁寧なサポートでスクリーン選びをお手伝いします。

Visit theaterhouse.co.jp

Key Findings

We analyzed Theaterhouse.co.jp page load time and found that the first response time was 1.3 sec and then it took 9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

theaterhouse.co.jp performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value2,070 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

theaterhouse.co.jp

1329 ms

style.css

312 ms

font-awesome.min.css

5 ms

item_top.css

340 ms

subcss.css

341 ms

Our browser made a total of 195 requests to load all elements on the main page. We found that 90% of them (175 requests) were addressed to the original Theaterhouse.co.jp, 2% (3 requests) were made to Api.dot-metrix.com and 1% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Theaterhouse.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 639.3 kB (18%)

Content Size

3.6 MB

After Optimization

3.0 MB

In fact, the total size of Theaterhouse.co.jp main page is 3.6 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 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 37.5 kB

  • Original 47.8 kB
  • After minification 37.2 kB
  • After compression 10.3 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 10.7 kB, which is 22% 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 37.5 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 109.9 kB

  • Original 2.9 MB
  • After minification 2.8 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. Theaterhouse images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 340.5 kB

  • Original 462.9 kB
  • After minification 342.1 kB
  • After compression 122.5 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 340.5 kB or 74% of the original size.

CSS Optimization

-83%

Potential reduce by 151.4 kB

  • Original 181.9 kB
  • After minification 137.0 kB
  • After compression 30.4 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. Theaterhouse.co.jp needs all CSS files to be minified and compressed as it can save up to 151.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 66 (35%)

Requests Now

191

After Optimization

125

The browser has sent 191 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Theaterhouse. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

theaterhouse.co.jp accessibility score

87

Accessibility Issues

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.

Tables and lists

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

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

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

Links do not have a discernible name

Best Practices

theaterhouse.co.jp best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

theaterhouse.co.jp SEO score

98

Search Engine Optimization Advices

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

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 Theaterhouse.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 Theaterhouse.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

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