5.2 sec in total
550 ms
4.3 sec
345 ms
Visit isdn-info.co.jp now to see the best up-to-date Isdn Info content for Japan and also check out these interesting facts you probably never knew about isdn-info.co.jp
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Visit isdn-info.co.jpWe analyzed Isdn-info.co.jp page load time and found that the first response time was 550 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
isdn-info.co.jp performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value12.0 s
0/100
25%
Value6.8 s
36/100
10%
Value120 ms
97/100
30%
Value0.334
34/100
15%
Value8.7 s
37/100
10%
550 ms
354 ms
536 ms
359 ms
360 ms
Our browser made a total of 99 requests to load all elements on the main page. We found that 95% of them (94 requests) were addressed to the original Isdn-info.co.jp, 2% (2 requests) were made to Apis.google.com and 2% (2 requests) were made to Ocnbiz.jp. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Isdn-info.co.jp.
Page size can be reduced by 115.5 kB (12%)
954.8 kB
839.3 kB
In fact, the total size of Isdn-info.co.jp main page is 954.8 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. 45% of websites need less resources to load. Images take 838.5 kB which makes up the majority of the site volume.
Potential reduce by 31.1 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. This page needs HTML code to be minified as it can gain 5.2 kB, which is 13% 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 31.1 kB or 80% of the original size.
Potential reduce by 26.7 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. Isdn Info images are well optimized though.
Potential reduce by 31.3 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 31.3 kB or 68% of the original size.
Potential reduce by 26.4 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. Isdn-info.co.jp needs all CSS files to be minified and compressed as it can save up to 26.4 kB or 84% of the original size.
Number of requests can be reduced by 14 (14%)
98
84
The browser has sent 98 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isdn Info. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
isdn-info.co.jp
550 ms
produce.css
354 ms
isdninfo.css
536 ms
smartRollover.js
359 ms
smoothScroll.js
360 ms
plusone.js
101 ms
jquery.min.js
58 ms
jquery.bxslider.min.js
564 ms
jquery.bxslider.css
363 ms
cb=gapi.loaded_0
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back.jpg
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logo.gif
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olympic.jpg
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head_bnr01.jpg
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536 ms
order01.jpg
537 ms
lh3_internet_s.gif
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lh3_ocn_s.gif
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piwik.php
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ocn_hikaricollabo.jpg
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rakuten_top.jpg
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ocn_ip1_s.jpg
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tokuwari_top%20.jpg
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hosting_economy_s.jpg
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ocn_sokuji01.jpg
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rakuten_sokuji.jpg
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icon03.jpg
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symbol1.gif
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1500 ms
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tokuwari_bnr.jpg
1578 ms
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news_01.jpg
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fletslogo.jpg
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icon_nttcom.gif
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controls.png
1588 ms
isdn-info.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.
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
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.
isdn-info.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
isdn-info.co.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 doesn't use legible font sizes
JA
N/A
SHIFT_JIS
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Isdn-info.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Isdn-info.co.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
isdn-info.co.jp
Open Graph description is not detected on the main page of Isdn Info. 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: