Tools & Wizards About Us
osakacastle.net screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

osakacastle.net

大阪城天守閣

Page Load Speed

5 sec in total

First Response

537 ms

Resources Loaded

3.4 sec

Page Rendered

1.1 sec

osakacastle.net screenshot

About Website

Click here to check amazing Osakacastle content for Japan. Otherwise, check out these important facts you probably never knew about osakacastle.net

大阪城天守閣は、豊臣時代・徳川時代に続く3代目のもので、昭和6年（1931）市民の寄付金によって復興されました。現在まで90年以上の歴史を刻み、国の登録文化財にも指定されています。

Visit osakacastle.net

Key Findings

We analyzed Osakacastle.net page load time and found that the first response time was 537 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

osakacastle.net performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value14.0 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value1,710 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.1

90/100

15%

TTI (Time to Interactive)

Value49.2 s

0/100

10%

Network Requests Diagram

osakacastle.net

537 ms

osakacastle.net

737 ms

top.css

184 ms

google-tag-manager.js

366 ms

jquery.min.js

32 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 76% of them (29 requests) were addressed to the original Osakacastle.net, 5% (2 requests) were made to Cdnjs.cloudflare.com and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Osakacastle.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 163.0 kB (7%)

Content Size

2.3 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Osakacastle.net main page is 2.3 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. 30% of websites need less resources to load. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 10.3 kB

  • Original 14.1 kB
  • After minification 12.1 kB
  • After compression 3.8 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. This page needs HTML code to be minified as it can gain 2.0 kB, which is 14% 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 10.3 kB or 73% of the original size.

Image Optimization

-5%

Potential reduce by 101.8 kB

  • Original 2.2 MB
  • After minification 2.1 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. Osakacastle images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 912 B

  • Original 25.1 kB
  • After minification 25.1 kB
  • After compression 24.2 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

-86%

Potential reduce by 50.0 kB

  • Original 58.4 kB
  • After minification 46.2 kB
  • After compression 8.4 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. Osakacastle.net needs all CSS files to be minified and compressed as it can save up to 50.0 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (20%)

Requests Now

35

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Osakacastle. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

osakacastle.net

osakacastle.net

537 ms

osakacastle.net

osakacastle.net

737 ms

top.css

top.css

184 ms

google-tag-manager.js

google-tag-manager.js

366 ms

jquery.min.js

jquery.min.js

32 ms

wow.min.js

wow.min.js

43 ms

scripts.js

scripts.js

532 ms

gtm.js

gtm.js

102 ms

ga.js

ga.js

76 ms

embed

embed

238 ms

keyvisual_bg_01.jpg

keyvisual_bg_01.jpg

956 ms

footer_bg.jpg

footer_bg.jpg

890 ms

keyvisual_bg_01.jpg

keyvisual_bg_01.jpg

1028 ms

line_title.jpg

line_title.jpg

559 ms

button_common.png

button_common.png

560 ms

notifcation_icn_title.png

notifcation_icn_title.png

922 ms

link_icn.png

link_icn.png

1071 ms

line_primary.jpg

line_primary.jpg

733 ms

ticket_banner.png

ticket_banner.png

1076 ms

ticket_allow.png

ticket_allow.png

1067 ms

exhibition_bg.jpg

exhibition_bg.jpg

1451 ms

exhibition_bg_gold.png

exhibition_bg_gold.png

1141 ms

pattern_bg.png

pattern_bg.png

1204 ms

map_bg.jpg

map_bg.jpg

1599 ms

map_icn_02.png

map_icn_02.png

1412 ms

map_icn_01.png

map_icn_01.png

1247 ms

footer_icn_button.png

footer_icn_button.png

1322 ms

news_bg_01.jpg

news_bg_01.jpg

1394 ms

news_bg_02.jpg

news_bg_02.jpg

1764 ms

event_icn.jpg

event_icn.jpg

1504 ms

link_img_04.jpg

link_img_04.jpg

1572 ms

link_img_01.jpg

link_img_01.jpg

1583 ms

link_img_02.jpg

link_img_02.jpg

1625 ms

link_img_03.jpg

link_img_03.jpg

1685 ms

__utm.gif

__utm.gif

32 ms

collect

collect

25 ms

js

js

45 ms

js

js

50 ms

Accessibility Review

osakacastle.net accessibility score

74

Accessibility Issues

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

osakacastle.net 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

High

Page has valid source maps

SEO Factors

osakacastle.net SEO score

77

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 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 Osakacastle.net 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 Osakacastle.net 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

osakacastle.net

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