Tools & Wizards About Us

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

oshirobu.com

お城部.com|日本100名城のお城巡りを楽しむ日本のお城ガイド

Page Load Speed

4 sec in total

First Response

579 ms

Resources Loaded

3.1 sec

Page Rendered

279 ms

About Website

Visit oshirobu.com now to see the best up-to-date Oshirobu content for Japan and also check out these interesting facts you probably never knew about oshirobu.com

お城部は日本100名城を中心にお城の情報と写真・イベント・本の情報を発信します。

Visit oshirobu.com

Key Findings

We analyzed Oshirobu.com page load time and found that the first response time was 579 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

oshirobu.com performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

64/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value1,450 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.335

34/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

Network Requests Diagram

oshirobu.com

579 ms

oshirobu.com

776 ms

foundation.css

385 ms

style.css

558 ms

flexslider.css

573 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 67% of them (28 requests) were addressed to the original Oshirobu.com, 17% (7 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (987 ms) belongs to the original domain Oshirobu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 102.9 kB (19%)

Content Size

554.0 kB

After Optimization

451.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Oshirobu.com main page is 554.0 kB. 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 286.1 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 15.0 kB

  • Original 20.0 kB
  • After minification 17.8 kB
  • After compression 5.1 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 2.2 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 15.0 kB or 75% of the original size.

Image Optimization

-12%

Potential reduce by 35.4 kB

  • Original 286.1 kB
  • After minification 250.6 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. Obviously, Oshirobu needs image optimization as it can save up to 35.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-18%

Potential reduce by 36.7 kB

  • Original 209.1 kB
  • After minification 209.1 kB
  • After compression 172.4 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 36.7 kB or 18% of the original size.

CSS Optimization

-41%

Potential reduce by 15.8 kB

  • Original 38.7 kB
  • After minification 38.7 kB
  • After compression 22.9 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. Oshirobu.com needs all CSS files to be minified and compressed as it can save up to 15.8 kB or 41% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (40%)

Requests Now

30

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oshirobu. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

oshirobu.com accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

Best Practices

oshirobu.com best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

oshirobu.com SEO score

92

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

Image elements do not have [alt] attributes

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

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 Oshirobu.com 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 Oshirobu.com 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 description is not detected on the main page of Oshirobu. 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: