Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

kawaguchigiken.co.jp

川口技研

Page Load Speed

7.7 sec in total

First Response

878 ms

Resources Loaded

6.7 sec

Page Rendered

145 ms

kawaguchigiken.co.jp screenshot

About Website

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

Visit kawaguchigiken.co.jp

Key Findings

We analyzed Kawaguchigiken.co.jp page load time and found that the first response time was 878 ms and then it took 6.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

kawaguchigiken.co.jp performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.467

19/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

kawaguchigiken.co.jp

878 ms

default.css

357 ms

load_top.js

591 ms

oshirase.html

498 ms

multic.cgi

569 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that all of those requests were addressed to Kawaguchigiken.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (4.1 sec) belongs to the original domain Kawaguchigiken.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 22.3 kB (18%)

Content Size

122.8 kB

After Optimization

100.5 kB

In fact, the total size of Kawaguchigiken.co.jp main page is 122.8 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 10% of websites need less resources to load. Images take 103.4 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 10.4 kB

  • Original 13.3 kB
  • After minification 11.2 kB
  • After compression 2.9 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 2.1 kB, which is 16% 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 10.4 kB or 78% of the original size.

Image Optimization

-7%

Potential reduce by 7.0 kB

  • Original 103.4 kB
  • After minification 96.4 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. Kawaguchigiken images are well optimized though.

JavaScript Optimization

-83%

Potential reduce by 4.0 kB

  • Original 4.8 kB
  • After minification 4.8 kB
  • After compression 833 B

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 4.0 kB or 83% of the original size.

CSS Optimization

-70%

Potential reduce by 906 B

  • Original 1.3 kB
  • After minification 1.1 kB
  • After compression 397 B

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. Kawaguchigiken.co.jp needs all CSS files to be minified and compressed as it can save up to 906 B or 70% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (55%)

Requests Now

67

After Optimization

30

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

Accessibility Review

kawaguchigiken.co.jp accessibility score

91

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.

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

<input type="image"> elements do not have [alt] text

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

kawaguchigiken.co.jp best practices score

67

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

SEO Factors

kawaguchigiken.co.jp SEO score

85

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kawaguchigiken.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 Kawaguchigiken.co.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Kawaguchigiken. 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: