Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

columbia.jp

日本コロムビアオフィシャルサイト|NIPPON COLUMBIA

Page Load Speed

9 sec in total

First Response

800 ms

Resources Loaded

8.1 sec

Page Rendered

161 ms

columbia.jp screenshot

About Website

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

日本コロムビアの公式サイト。アーティストのCD・DVD・グッズ等の最新ニュース、曲・動画の無料視聴・購入、ライブ・イベント・コンサートスケジュールやテレビ・ラジオへの出演情報を掲載。

Visit columbia.jp

Key Findings

We analyzed Columbia.jp page load time and found that the first response time was 800 ms and then it took 8.2 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

columbia.jp performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value90 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.168

71/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

Network Requests Diagram

columbia.jp

800 ms

def.css

312 ms

style.css

322 ms

top.css

331 ms

jquery-1.4.2.min.js

714 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that all of those requests were addressed to Columbia.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Columbia.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 250.6 kB (21%)

Content Size

1.2 MB

After Optimization

938.3 kB

In fact, the total size of Columbia.jp main page is 1.2 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 879.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 51.3 kB

  • Original 65.4 kB
  • After minification 58.0 kB
  • After compression 14.1 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 7.3 kB, which is 11% 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 51.3 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 26.5 kB

  • Original 879.8 kB
  • After minification 853.3 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. COLUMBIA images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 136.5 kB

  • Original 196.9 kB
  • After minification 185.9 kB
  • After compression 60.4 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 136.5 kB or 69% of the original size.

CSS Optimization

-78%

Potential reduce by 36.3 kB

  • Original 46.8 kB
  • After minification 37.8 kB
  • After compression 10.5 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. Columbia.jp needs all CSS files to be minified and compressed as it can save up to 36.3 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (27%)

Requests Now

115

After Optimization

84

The browser has sent 115 CSS, Javascripts, AJAX and image requests in order to completely render the main page of COLUMBIA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

columbia.jp accessibility score

96

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

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

columbia.jp best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

columbia.jp SEO score

90

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Columbia.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 Columbia.jp main page’s claimed encoding is shift_jis. 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 COLUMBIA. 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: