Tools & Wizards About Us
sada.co.jp screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

sada.co.jp

さだまさし オフィシャルサイト - さだまさし オフィシャルサイト

Page Load Speed

10.6 sec in total

First Response

505 ms

Resources Loaded

9.2 sec

Page Rendered

913 ms

sada.co.jp screenshot

About Website

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

シンガーソングライター、小説家“さだまさし”のオフィシャルウェブサイトです。ソロコンサートの回数は前人未到の4,500回を超え、「解夏」「眉山」「アントキノイノチ」「風に立つライオン」などの書き下し小説は、ほとんどがドラマや映画化されています。ファンからは“まっさん”の愛称で親しまれ、幅広い世代に愛され続ける国民的なアーティストです。

Visit sada.co.jp

Key Findings

We analyzed Sada.co.jp page load time and found that the first response time was 505 ms and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

sada.co.jp performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value15.5 s

0/100

25%

SI (Speed Index)

Value11.8 s

4/100

10%

TBT (Total Blocking Time)

Value690 ms

43/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.7 s

22/100

10%

Network Requests Diagram

sada.co.jp

505 ms

masasingtown.com

1815 ms

application-d89e94b0008c7ce814dca76c8c0a3750.css

339 ms

js

77 ms

api.js

36 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Sada.co.jp, 84% (71 requests) were made to Masasingtown.com and 5% (4 requests) were made to Scontent-nrt1-2.cdninstagram.com. The less responsive or slowest element that took the longest time to load (3.3 sec) relates to the external source Scontent-nrt1-2.cdninstagram.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 713.9 kB (4%)

Content Size

16.7 MB

After Optimization

16.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sada.co.jp main page is 16.7 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 16.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 115.7 kB

  • Original 148.5 kB
  • After minification 144.6 kB
  • After compression 32.8 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 115.7 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 563.9 kB

  • Original 16.4 MB
  • After minification 15.8 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. Sada images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 22.0 kB

  • Original 144.0 kB
  • After minification 144.0 kB
  • After compression 122.0 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 22.0 kB or 15% of the original size.

CSS Optimization

-20%

Potential reduce by 12.2 kB

  • Original 61.6 kB
  • After minification 61.6 kB
  • After compression 49.4 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. Sada.co.jp needs all CSS files to be minified and compressed as it can save up to 12.2 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (4%)

Requests Now

79

After Optimization

76

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sada. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sada.co.jp

sada.co.jp

505 ms

masasingtown.com

masasingtown.com

1815 ms

application-d89e94b0008c7ce814dca76c8c0a3750.css

application-d89e94b0008c7ce814dca76c8c0a3750.css

339 ms

js

js

77 ms

api.js

api.js

36 ms

application-8832372217fd5f39c239217d33ca75e4.js

application-8832372217fd5f39c239217d33ca75e4.js

1207 ms

css

css

36 ms

all.css

all.css

37 ms

gtm.js

gtm.js

131 ms

fc_bg-d8f6315a8d8d03d641e538c184f0df40.jpg

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517 ms

logo.png

logo.png

528 ms

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1156 ms

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1496 ms

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2420 ms

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1044 ms

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1412 ms

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1278 ms

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1222 ms

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2141 ms

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1389 ms

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1446 ms

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1562 ms

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1976 ms

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1860 ms

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2321 ms

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1895 ms

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2192 ms

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2230 ms

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2302 ms

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2501 ms

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2563 ms

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2564 ms

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2629 ms

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2487 ms

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2748 ms

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2653 ms

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2665 ms

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2895 ms

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2898 ms

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2955 ms

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2818 ms

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2828 ms

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2914 ms

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2984 ms

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63 ms

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88 ms

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53 ms

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61 ms

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2481 ms

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2538 ms

4816

4816

2054 ms

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2039 ms

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2220 ms

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1932 ms

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2376 ms

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2071 ms

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2004 ms

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1982 ms

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1827 ms

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2328 ms

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1899 ms

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1850 ms

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1851 ms

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1722 ms

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2516 ms

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1909 ms

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1621 ms

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1674 ms

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1610 ms

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1731 ms

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1750 ms

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1599 ms

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1630 ms

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1840 ms

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1676 ms

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1697 ms

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1637 ms

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1594 ms

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1667 ms

masasingtown.com

masasingtown.com

2833 ms

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1819 ms

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1306 ms

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2388 ms

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3309 ms

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2534 ms

Accessibility Review

sada.co.jp accessibility score

82

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-*] attributes do not match their roles

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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.

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

sada.co.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

sada.co.jp SEO score

89

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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 Sada.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 Sada.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

sada.co.jp

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