Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 74

    SEO

    Google-friendlier than
    31% of websites

nakahara-lab.net

立教大学 経営学部 中原淳研究室 - 大人の学びを科学する | NAKAHARA-LAB.net

Page Load Speed

1.1 sec in total

First Response

520 ms

Resources Loaded

522 ms

Page Rendered

80 ms

nakahara-lab.net screenshot

About Website

Click here to check amazing NAKAHARA LAB content for Japan. Otherwise, check out these important facts you probably never knew about nakahara-lab.net

立教大学 経営学部 中原淳研究室 中原 淳のブログです。経営学習・人的資源開発に関する研究知見、エッセイ、日々の日記が更新されています。

Visit nakahara-lab.net

Key Findings

We analyzed Nakahara-lab.net page load time and found that the first response time was 520 ms and then it took 602 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

nakahara-lab.net performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value24.4 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value120 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.129

82/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

nakahara-lab.net

520 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Nakahara-lab.net and no external sources were called. The less responsive or slowest element that took the longest time to load (520 ms) belongs to the original domain Nakahara-lab.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 12 B (10%)

Content Size

123 B

After Optimization

111 B

In fact, the total size of Nakahara-lab.net main page is 123 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 123 B which makes up the majority of the site volume.

HTML Optimization

-10%

Potential reduce by 12 B

  • Original 123 B
  • After minification 120 B
  • After compression 111 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. This web page is already compressed.

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.

Accessibility Review

nakahara-lab.net accessibility score

56

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.

Internationalization and localization

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

Impact

Issue

High

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

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

High

Links do not have a discernible name

Best Practices

nakahara-lab.net 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

nakahara-lab.net SEO score

74

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nakahara-lab.net 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 Nakahara-lab.net main page’s claimed encoding is . 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 NAKAHARA LAB. 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: