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Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 0

    Best Practices

  • 69

    SEO

    Google-friendlier than
    28% of websites

rakuten.coursebase.co

Coursebase

Page Load Speed

719 ms in total

First Response

15 ms

Resources Loaded

704 ms

Page Rendered

0 ms

rakuten.coursebase.co screenshot

About Website

Welcome to rakuten.coursebase.co homepage info - get ready to check Rakuten Coursebase best content for Japan right away, or after learning these important things about rakuten.coursebase.co

Visit rakuten.coursebase.co

Key Findings

We analyzed Rakuten.coursebase.co page load time and found that the first response time was 15 ms and then it took 704 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

rakuten.coursebase.co performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value13.3 s

2/100

10%

TBT (Total Blocking Time)

Value1,870 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.232

54/100

15%

TTI (Time to Interactive)

Value13.2 s

12/100

10%

Network Requests Diagram

rakuten.coursebase.co

15 ms

rakuten.coursebase.co

689 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Rakuten.coursebase.co and no external sources were called. The less responsive or slowest element that took the longest time to load (689 ms) belongs to the original domain Rakuten.coursebase.co.

Page Optimization Overview & Recommendations

Page size can be reduced by 165.3 kB (82%)

Content Size

201.0 kB

After Optimization

35.8 kB

  • HTML
  • CSS

In fact, the total size of Rakuten.coursebase.co main page is 201.0 kB. 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. CSS take 200.0 kB which makes up the majority of the site volume.

HTML Optimization

-45%

Potential reduce by 469 B

  • Original 1.0 kB
  • After minification 1.0 kB
  • After compression 569 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 469 B or 45% of the original size.

CSS Optimization

-82%

Potential reduce by 164.8 kB

  • Original 200.0 kB
  • After minification 199.7 kB
  • After compression 35.2 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. Rakuten.coursebase.co needs all CSS files to be minified and compressed as it can save up to 164.8 kB or 82% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

rakuten.coursebase.co

rakuten.coursebase.co

15 ms

rakuten.coursebase.co

rakuten.coursebase.co

689 ms

Accessibility Review

rakuten.coursebase.co accessibility score

67

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

SEO Factors

rakuten.coursebase.co SEO score

69

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

High

Page is blocked from indexing

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rakuten.coursebase.co can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Japanese. Our system also found out that Rakuten.coursebase.co 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

rakuten.coursebase.co

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