Access otonanokagaku.net. 大人の科学.net

otonanokagaku.net screenshot

68

Performance

Renders faster than
80% of other websites
77

Accessibility

Visual factors better than
that of 44% of websites
58

Best Practices

More advanced features
available than in
20% of websites
69

SEO

Google-friendlier than
28% of websites

First Response

11 ms

Resources Loaded

9.3 sec

Page Rendered

207 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。

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Key Findings

We analyzed Otonanokagaku.net page load time and found that the first response time was 11 ms and then it took 9.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value4.0 s

80/100

10%

TBT (Total Blocking Time)

Value380 ms

70/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.1 s

75/100

10%

otonanokagaku.net

11 ms

otonanokagaku.net

586 ms

base.css

437 ms

index.css

423 ms

flashobject.js

391 ms

Our browser made a total of 157 requests to load all elements on the main page. We found that 96% of them (151 requests) were addressed to the original Otonanokagaku.net, 1% (2 requests) were made to Googletagmanager.com and 1% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Otonanokagaku.net.

Content Size

585.2 kB

After Optimization

486.4 kB

In fact, the total size of Otonanokagaku.net main page is 585.2 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 450.3 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 45.5 kB

Original 55.2 kB
After minification 48.4 kB
After compression 9.7 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 6.8 kB, which is 12% 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 45.5 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 4.4 kB

Original 450.3 kB
After minification 446.0 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

-57%

Potential reduce by 36.9 kB

Original 65.2 kB
After minification 55.7 kB
After compression 28.3 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 36.9 kB or 57% of the original size.

CSS Optimization

-83%

Potential reduce by 12.0 kB

Original 14.5 kB
After minification 9.2 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 12.0 kB or 83% of the original size.

Requests Now

154

After Optimization

101

The browser has sent 154 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 13 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

High

Browser errors were logged to the console

Search Engine Optimization Advices

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

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

otonanokagaku.net

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: