7.2 sec in total
917 ms
5.9 sec
323 ms
Welcome to coerver.co.jp homepage info - get ready to check Coerver best content for Japan right away, or after learning these important things about coerver.co.jp
少年少女を対象に全国でサッカースクールを開催しています。基礎テクニック習得を目的としたコーチングが特徴です。各種サッカーイベントやプライベートレッスン、キャンプの開催のほか、本やDVDの制作、販売もしています。コーチのアルバイトも募集中です。
Visit coerver.co.jpWe analyzed Coerver.co.jp page load time and found that the first response time was 917 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
coerver.co.jp performance score
name
value
score
weighting
Value4.7 s
12/100
10%
Value21.3 s
0/100
25%
Value14.4 s
1/100
10%
Value260 ms
83/100
30%
Value1.69
0/100
15%
Value14.4 s
9/100
10%
917 ms
380 ms
376 ms
31 ms
52 ms
Our browser made a total of 128 requests to load all elements on the main page. We found that 61% of them (78 requests) were addressed to the original Coerver.co.jp, 8% (10 requests) were made to Static.xx.fbcdn.net and 5% (6 requests) were made to Translate.googleapis.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Coerver.co.jp.
Page size can be reduced by 367.5 kB (17%)
2.2 MB
1.8 MB
In fact, the total size of Coerver.co.jp main page is 2.2 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. 55% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.
Potential reduce by 27.9 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 27.9 kB or 76% of the original size.
Potential reduce by 84.6 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. Coerver images are well optimized though.
Potential reduce by 129.0 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 129.0 kB or 36% of the original size.
Potential reduce by 126.0 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. Coerver.co.jp needs all CSS files to be minified and compressed as it can save up to 126.0 kB or 84% of the original size.
Number of requests can be reduced by 72 (57%)
126
54
The browser has sent 126 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Coerver. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
www.coerver.co.jp
917 ms
style.css
380 ms
filter.css
376 ms
jquery.min.js
31 ms
ajaxzip3-https.js
52 ms
birth.js
383 ms
script.js
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jquery.textresizer.js
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styles.css
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jquery.js
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jquery-migrate.min.js
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js
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element.js
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jquery.form.min.js
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scripts.js
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common_style.css
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top_style.css
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sha.css
564 ms
ga.js
42 ms
blade_track_jp.js
382 ms
coerver-card.jpg
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show
10 ms
bg_main_01.jpg
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ping
57 ms
coerver.co.jp accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<html> element does not have a [lang] attribute
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.
coerver.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
coerver.co.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Coerver.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 Coerver.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.
coerver.co.jp
Open Graph description is not detected on the main page of Coerver. 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: