Report Summary

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    Best Practices

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                                     鉄道DVD 動輪堂

Page Load Speed

8.7 sec in total

First Response

791 ms

Resources Loaded

5.3 sec

Page Rendered

2.6 sec screenshot

About Website

Click here to check amazing Dorindo content. Otherwise, check out these important facts you probably never knew about

鉄道ファンによる鉄道ファンのための鉄道DVDショップ。鉄道DVD・ブルーレイ作品を店頭でのご購入よりもお値打ちでお求めになれます。Dorindo Co.,Ltd. It's the internet shop of DVD&Blu-ray on Japanese railroads/railways.


Key Findings

We analyzed page load time and found that the first response time was 791 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics performance score


Network Requests Diagram

791 ms


513 ms


704 ms


711 ms


665 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 54% of them (50 requests) were addressed to the original, 45% (41 requests) were made to and 1% (1 request) were made to The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain

Page Optimization Overview & Recommendations

Page size can be reduced by 156.7 kB (4%)

Content Size

4.4 MB

After Optimization

4.2 MB

In fact, the total size of main page is 4.4 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. 60% of websites need less resources to load. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 80.8 kB

  • Original 94.7 kB
  • After minification 79.2 kB
  • After compression 13.9 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 15.5 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 80.8 kB or 85% of the original size.

Image Optimization


Potential reduce by 52.8 kB

  • Original 4.2 MB
  • After minification 4.2 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. Dorindo images are well optimized though.

CSS Optimization


Potential reduce by 23.2 kB

  • Original 27.0 kB
  • After minification 17.7 kB
  • After compression 3.8 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. needs all CSS files to be minified and compressed as it can save up to 23.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (9%)

Requests Now


After Optimization


The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dorindo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

SEO Factors SEO score


Language and Encoding

  • Language Detected


  • Language Claimed


  • Encoding


Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that main page’s claimed encoding is euc-jp. 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

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