Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

showanavi.jp

大空出版の本(おおぞらしゅっぱんのほん) - 大空出版

Page Load Speed

5.3 sec in total

First Response

1.2 sec

Resources Loaded

3.9 sec

Page Rendered

253 ms

showanavi.jp screenshot

About Website

Welcome to showanavi.jp homepage info - get ready to check Showanavi best content for Japan right away, or after learning these important things about showanavi.jp

大空出版の本を紹介するホームページです。

Visit showanavi.jp

Key Findings

We analyzed Showanavi.jp page load time and found that the first response time was 1.2 sec and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

showanavi.jp performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value14.3 s

0/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value670 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.312

37/100

15%

TTI (Time to Interactive)

Value12.8 s

13/100

10%

Network Requests Diagram

showanavi.jp

1153 ms

import.css

354 ms

top.css

744 ms

import.js

364 ms

swf.js

577 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 84% of them (59 requests) were addressed to the original Showanavi.jp, 4% (3 requests) were made to Ozorabunko.jp and 3% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Showanavi.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 113.1 kB (19%)

Content Size

592.5 kB

After Optimization

479.5 kB

In fact, the total size of Showanavi.jp main page is 592.5 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. 25% of websites need less resources to load. Images take 407.1 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 23.3 kB

  • Original 30.6 kB
  • After minification 24.2 kB
  • After compression 7.3 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 6.3 kB, which is 21% 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 23.3 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 3.4 kB

  • Original 407.1 kB
  • After minification 403.7 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. Showanavi images are well optimized though.

JavaScript Optimization

-46%

Potential reduce by 53.5 kB

  • Original 115.3 kB
  • After minification 93.6 kB
  • After compression 61.7 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 53.5 kB or 46% of the original size.

CSS Optimization

-83%

Potential reduce by 32.8 kB

  • Original 39.6 kB
  • After minification 31.4 kB
  • After compression 6.7 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. Showanavi.jp needs all CSS files to be minified and compressed as it can save up to 32.8 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (45%)

Requests Now

67

After Optimization

37

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Showanavi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

showanavi.jp accessibility score

91

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

<frame> or <iframe> elements do not have a title

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

showanavi.jp 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

showanavi.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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Showanavi.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Showanavi.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 description is not detected on the main page of Showanavi. 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: