Tools & Wizards About Us

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

britishcouncil.jp

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

3.2 sec in total

First Response

155 ms

Resources Loaded

2.8 sec

Page Rendered

182 ms

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。

Visit britishcouncil.jp

Key Findings

We analyzed Britishcouncil.jp page load time and found that the first response time was 155 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

britishcouncil.jp performance score

19

Measured Metrics

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%

Network Requests Diagram

www.britishcouncil.jp

155 ms

otSDKStub.js

62 ms

css__iYN0PnhGRITeIiRpmnTmEz4xX4gTF6dPgdte0drEfaY__XaxEcspfL8jYi5T4sjBdMIAiRr5QyTnazlO2d_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.

Page Optimization Overview & Recommendations

Page size can be reduced by 283.6 kB (34%)

Content Size

824.5 kB

After Optimization

540.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Britishcouncil.jp main page is 824.5 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. 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

-36%

Potential reduce by 94.6 kB

  • Original 262.5 kB
  • After minification 259.5 kB
  • After compression 167.9 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 36% 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 Breakdown

Number of requests can be reduced by 13 (36%)

Requests Now

36

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

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.

Network Requests Diagram

Accessibility Review

britishcouncil.jp accessibility score

98

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.

Best Practices

britishcouncil.jp best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

britishcouncil.jp SEO score

91

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

    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

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: