Access britishcouncil.jp. 英国（イギリス）の公的な国際文化交流機関

Report Summary

About Website

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

ブリティッシュ・カウンシルは、文化交流と教育機会を促進する英国の公的な国際文化交流機関です。私たちは文化芸術、教育、英語を通じて、英国とその他の国の人々の間につながりを育み、理解と信頼を築くために活動しています。

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name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value15.8 s

0/100

25%

SI (Speed Index)

Value15.5 s

0/100

10%

TBT (Total Blocking Time)

Value1,910 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.055

98/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

www.britishcouncil.jp

155 ms

otSDKStub.js

62 ms

cssiYN0PnhGRITeIiRpmnTmEz4xX4gTF6dPgdte0drEfaYXaxEcspfL8jYi5T4sjBdMIAiRr5QyTnazlO2d_X7dqU__oNUwPYy6putmb6fKNn9OLzUWvLEajf5CwwZ2JjwHGRw.css

561 ms

bc-theme.css

39 ms

bc-theme-ja.css

59 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 73% of them (27 requests) were addressed to the original Britishcouncil.jp, 11% (4 requests) were made to Sui.britishcouncil.org and 8% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Britishcouncil.jp.

Content Size

830.0 kB

After Optimization

546.4 kB

In fact, the total size of Britishcouncil.jp main page is 830.0 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. 35% of websites need less resources to load. Images take 308.5 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 141.8 kB

Original 195.8 kB
After minification 185.2 kB
After compression 54.0 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 141.8 kB or 72% of the original size.

Image Optimization

-1%

Potential reduce by 1.7 kB

Original 308.5 kB
After minification 306.8 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. Britishcouncil images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 94.6 kB

Original 268.0 kB
After minification 265.0 kB
After compression 173.4 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 94.6 kB or 35% of the original size.

CSS Optimization

-79%

Potential reduce by 45.5 kB

Original 57.7 kB
After minification 57.5 kB
After compression 12.2 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. Britishcouncil.jp needs all CSS files to be minified and compressed as it can save up to 45.5 kB or 79% of the original size.

Requests Now

After Optimization

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Britishcouncil. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

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

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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 uses legible font sizes

High

Tap targets are not sized appropriately

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 Britishcouncil.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 Britishcouncil.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

britishcouncil.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

英国（イギリス）の公的な国際文化交流機関 | ブリティッシュ・カウンシル

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)