Tools & Wizards About Us

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

blockchaindaigakko.jp

ビットバンク(bitbank) | ビットコインが購入できる暗号資産(仮想通貨)取引所

Page Load Speed

3.2 sec in total

First Response

355 ms

Resources Loaded

2 sec

Page Rendered

833 ms

About Website

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

ビットバンク(bitbank)は、ビットコイン・リップル・イーサリアムなど人気の暗号資産（仮想通貨）を売買できる暗号資産（仮想通貨）取引所です。国内No.1の取引量と高度なセキュリティを持つビットバンクで、一歩先の暗号資産（仮想通貨）トレードを始めてみませんか。

Visit blockchaindaigakko.jp

Key Findings

We analyzed Blockchaindaigakko.jp page load time and found that the first response time was 355 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

blockchaindaigakko.jp performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value20.9 s

0/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value800 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.065

97/100

15%

TTI (Time to Interactive)

Value27.4 s

0/100

10%

Network Requests Diagram

blockchaindaigakko.jp

355 ms

blockchaindaigakko.jp

591 ms

bitbank.cc

23 ms

normalize.css

97 ms

font-awesome.min.css

102 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Blockchaindaigakko.jp, 68% (60 requests) were made to Bitbank.cc and 17% (15 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (591 ms) belongs to the original domain Blockchaindaigakko.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 204.1 kB (8%)

Content Size

2.5 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blockchaindaigakko.jp main page is 2.5 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. Only a small number of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 46.0 kB

  • Original 57.8 kB
  • After minification 57.2 kB
  • After compression 11.7 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. 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 46.0 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 15.0 kB

  • Original 1.8 MB
  • After minification 1.8 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. Blockchaindaigakko images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.2 kB

  • Original 275.7 kB
  • After minification 275.7 kB
  • After compression 274.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-49%

Potential reduce by 141.8 kB

  • Original 289.6 kB
  • After minification 289.6 kB
  • After compression 147.7 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. Blockchaindaigakko.jp needs all CSS files to be minified and compressed as it can save up to 141.8 kB or 49% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (47%)

Requests Now

70

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blockchaindaigakko. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

blockchaindaigakko.jp accessibility score

91

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

blockchaindaigakko.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

blockchaindaigakko.jp SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 doesn't use 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 Blockchaindaigakko.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 Blockchaindaigakko.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 data is detected on the main page of Blockchaindaigakko. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: