9.2 sec in total
420 ms
8.4 sec
356 ms
Visit keirin.jp now to see the best up-to-date KEIRIN content for Japan and also check out these interesting facts you probably never knew about keirin.jp
競輪の公式サイト。初心者向けガイドが充実!予想に役立つ情報収集、ネットで投票、レース映像視聴が全て可能!安心・安全なオフィシャルサイトをご利用ください!
Visit keirin.jpWe analyzed Keirin.jp page load time and found that the first response time was 420 ms and then it took 8.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
keirin.jp performance score
name
value
score
weighting
Value6.5 s
2/100
10%
Value8.0 s
3/100
25%
Value6.5 s
39/100
10%
Value80 ms
99/100
30%
Value0.306
38/100
15%
Value6.7 s
56/100
10%
420 ms
972 ms
840 ms
510 ms
521 ms
Our browser made a total of 129 requests to load all elements on the main page. We found that all of those requests were addressed to Keirin.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Keirin.jp.
Page size can be reduced by 1.4 MB (48%)
3.0 MB
1.6 MB
In fact, the total size of Keirin.jp main page is 3.0 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 114.6 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 114.6 kB or 84% of the original size.
Potential reduce by 136.1 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. KEIRIN images are well optimized though.
Potential reduce by 854.5 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 854.5 kB or 83% of the original size.
Potential reduce by 320.9 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. Keirin.jp needs all CSS files to be minified and compressed as it can save up to 320.9 kB or 86% of the original size.
Number of requests can be reduced by 52 (42%)
125
73
The browser has sent 125 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KEIRIN. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
keirin.jp
420 ms
top
972 ms
bootstrap.min.css
840 ms
bootstrap-theme.min.css
510 ms
font-awesome.min.css
521 ms
jquery-ui.css
530 ms
subdialog.css
690 ms
slick.css
866 ms
slick-theme.css
893 ms
P_base.css
1375 ms
PJ0101.css
1058 ms
jquery-1.11.3.js
1706 ms
bootstrap.min.js
1356 ms
ie10-viewport-bug-workaround.js
1212 ms
jquery.cookie.js
1072 ms
jquery.json.min.js
1404 ms
jquery-ui.js
2275 ms
jquery.carouFredSel-6.2.1-packed.js
1884 ms
commonJSON.js
1699 ms
commonLoad.js
1730 ms
commonLink.js
1584 ms
commonSubmit.js
1932 ms
subdialog.js
2214 ms
slick.min.js
2047 ms
P_ticker.js
1912 ms
PC0101_c.js
2224 ms
PC0101_v.js
2091 ms
PC0101.js
2116 ms
PC0102.js
2402 ms
com_kaime.js
2597 ms
PJ0101.js
2316 ms
PJ0101_v.js
2725 ms
PJ0101_c.js
2569 ms
bg.gif
347 ms
header_bg.png
309 ms
topbtn.png
679 ms
colorbar.png
306 ms
game.png
357 ms
point_exchange.png
512 ms
spacer.png
307 ms
Dokanto_hatubaicyuu1.png
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Dokanto_Logo.png
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dokanto7_logo.png
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reg_btn_icon.png
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ico_onsale.png
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merumaga.jpg
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ajax-loader.gif
1240 ms
keirin.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
[role] values are not valid
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Image elements do not have [alt] attributes
Links do not have a discernible name
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.
keirin.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
keirin.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Keirin.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 Keirin.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.
keirin.jp
Open Graph description is not detected on the main page of KEIRIN. 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: