2.9 sec in total
427 ms
1.5 sec
998 ms
Welcome to jesea.co.jp homepage info - get ready to check JESEA best content for Japan right away, or after learning these important things about jesea.co.jp
地震を予測するJESEAの「MEGA地震予測」は、測量工学の権威である村井俊治東京大学名誉教授によって開発されたおすすめの地震予知アプリです。有料となりますが最初の1ヶ月間は無料でお試し可能です。地震の予測と早期対応にぜひお役立てください。
Visit jesea.co.jpWe analyzed Jesea.co.jp page load time and found that the first response time was 427 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
jesea.co.jp performance score
name
value
score
weighting
Value5.2 s
8/100
10%
Value8.1 s
2/100
25%
Value9.5 s
11/100
10%
Value390 ms
69/100
30%
Value0.073
96/100
15%
Value14.3 s
9/100
10%
427 ms
78 ms
346 ms
410 ms
409 ms
Our browser made a total of 21 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Jesea.co.jp, 52% (11 requests) were made to Image.jimcdn.com and 33% (7 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (461 ms) relates to the external source Image.jimcdn.com.
Page size can be reduced by 580.0 kB (45%)
1.3 MB
720.3 kB
In fact, the total size of Jesea.co.jp main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 40% of websites need less resources to load. Images take 546.2 kB which makes up the majority of the site volume.
Potential reduce by 76.1 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 76.1 kB or 74% of the original size.
Potential reduce by 94.5 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. Obviously, JESEA needs image optimization as it can save up to 94.5 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 329.0 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 329.0 kB or 62% of the original size.
Potential reduce by 80.4 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. Jesea.co.jp needs all CSS files to be minified and compressed as it can save up to 80.4 kB or 68% of the original size.
We found no issues to fix!
20
20
The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JESEA. According to our analytics all requests are already optimized.
www.jesea.co.jp
427 ms
mobile.js.e6393318a255cd25655e.js
78 ms
image.png
346 ms
image.png
410 ms
image.png
409 ms
image.png
461 ms
image.png
456 ms
image.png
405 ms
image.png
410 ms
image.png
409 ms
image.png
410 ms
image.png
455 ms
mobile_newui.css.115a844ab21b0cd0a0a230e0aa95b0bf.css
88 ms
image.png
271 ms
ga.js
127 ms
analytics.js
170 ms
__utm.gif
23 ms
__utm.gif
28 ms
collect
13 ms
collect
7 ms
collect
5 ms
jesea.co.jp accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA input fields do not have accessible names
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
jesea.co.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
jesea.co.jp SEO score
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
Document doesn't use legible font sizes
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jesea.co.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 Jesea.co.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.
jesea.co.jp
Open Graph description is not detected on the main page of JESEA. 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: