Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

otonanokagaku.net

大人の科学.net

Page Load Speed

10.6 sec in total

First Response

505 ms

Resources Loaded

9.7 sec

Page Rendered

401 ms

otonanokagaku.net screenshot

About Website

Click here to check amazing Otonanokagaku content for Japan. Otherwise, check out these important facts you probably never knew about otonanokagaku.net

大人の科学.netは、大人の科学マガジンや大人の科学製品版に関する情報を中心に、科学のさまざまな情報を発信します。

Visit otonanokagaku.net

Key Findings

We analyzed Otonanokagaku.net page load time and found that the first response time was 505 ms and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

otonanokagaku.net performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value3.2 s

91/100

10%

TBT (Total Blocking Time)

Value420 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

otonanokagaku.net

505 ms

base.css

315 ms

index.css

333 ms

flashobject.js

334 ms

header.js

342 ms

Our browser made a total of 187 requests to load all elements on the main page. We found that 81% of them (152 requests) were addressed to the original Otonanokagaku.net, 1% (2 requests) were made to Staticxx.facebook.com and 1% (2 requests) were made to Uac.advertising.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Otonanokagaku.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 269.0 kB (38%)

Content Size

714.3 kB

After Optimization

445.3 kB

In fact, the total size of Otonanokagaku.net main page is 714.3 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. 50% of websites need less resources to load. Images take 375.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 51.5 kB

  • Original 63.7 kB
  • After minification 52.6 kB
  • After compression 12.2 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. This page needs HTML code to be minified as it can gain 11.1 kB, which is 17% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 51.5 kB or 81% of the original size.

Image Optimization

-6%

Potential reduce by 20.9 kB

  • Original 375.6 kB
  • After minification 354.6 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. Otonanokagaku images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 185.5 kB

  • Original 261.6 kB
  • After minification 246.8 kB
  • After compression 76.1 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 185.5 kB or 71% of the original size.

CSS Optimization

-82%

Potential reduce by 11.0 kB

  • Original 13.4 kB
  • After minification 9.1 kB
  • After compression 2.4 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. Otonanokagaku.net needs all CSS files to be minified and compressed as it can save up to 11.0 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 76 (42%)

Requests Now

183

After Optimization

107

The browser has sent 183 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Otonanokagaku. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

otonanokagaku.net accessibility score

77

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

otonanokagaku.net best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

otonanokagaku.net 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

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 Otonanokagaku.net 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 Otonanokagaku.net 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 Otonanokagaku. 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: