Tools & Wizards About Us

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

japanknowledge.com

辞書･事典検索サイト | ジャパンナレッジ

Page Load Speed

4.6 sec in total

First Response

360 ms

Resources Loaded

4 sec

Page Rendered

313 ms

About Website

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

約1900冊以上（総額850万円）の膨大な辞書・事典などが使い放題のオンライン辞書・事典サイトです。

Visit japanknowledge.com

Key Findings

We analyzed Japanknowledge.com page load time and found that the first response time was 360 ms and then it took 4.3 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

japanknowledge.com performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value7.6 s

26/100

10%

TBT (Total Blocking Time)

Value540 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value12.0 s

16/100

10%

Network Requests Diagram

japanknowledge.com

360 ms

japanknowledge.com

876 ms

consent.js

51 ms

all.css

461 ms

jquery-3.3.1.min.js

39 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 61% of them (23 requests) were addressed to the original Japanknowledge.com, 8% (3 requests) were made to Google-analytics.com and 5% (2 requests) were made to Consent.cookiefirst.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source B-bunshun.ismcdn.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 116.0 kB (13%)

Content Size

912.1 kB

After Optimization

796.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Japanknowledge.com main page is 912.1 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. 20% of websites need less resources to load. Images take 739.1 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 16.4 kB

  • Original 24.6 kB
  • After minification 23.0 kB
  • After compression 8.2 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 16.4 kB or 67% of the original size.

Image Optimization

-3%

Potential reduce by 25.3 kB

  • Original 739.1 kB
  • After minification 713.8 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. Japanknowledge images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 13.5 kB

  • Original 74.8 kB
  • After minification 69.2 kB
  • After compression 61.3 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 13.5 kB or 18% of the original size.

CSS Optimization

-83%

Potential reduce by 60.7 kB

  • Original 73.6 kB
  • After minification 59.4 kB
  • After compression 12.8 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. Japanknowledge.com needs all CSS files to be minified and compressed as it can save up to 60.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (32%)

Requests Now

34

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Japanknowledge. 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 as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

japanknowledge.com accessibility score

95

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

Some elements have a [tabindex] value greater than 0

Best Practices

japanknowledge.com best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

japanknowledge.com SEO score

93

Search Engine Optimization Advices

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