Access mabuchi.co.jp. 馬渕教室｜馬渕教育グループ

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.146

77/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

mabuchi.co.jp

572 ms

www.mabuchi.co.jp

557 ms

pjumpj.js

347 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Mabuchi.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (572 ms) belongs to the original domain Mabuchi.co.jp.

Content Size

822 B

After Optimization

562 B

In fact, the total size of Mabuchi.co.jp main page is 822 B. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 754 B which makes up the majority of the site volume.

HTML Optimization

-34%

Potential reduce by 256 B

Original 754 B
After minification 750 B
After compression 498 B

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 256 B or 34% of the original size.

JavaScript Optimization

-6%

Potential reduce by 4 B

Original 68 B
After minification 64 B
After compression 64 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. This website has mostly compressed JavaScripts.

Requests Now

After Optimization

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mabuchi. According to our analytics all requests are already optimized.

Accessibility Issues

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

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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/).

High

Document doesn't use legible font sizes

Language and Encoding

Language Detected

JA
Language Claimed

N/A
Encoding

SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mabuchi.co.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 Mabuchi.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

mabuchi.co.jp

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