7.9 sec in total
1.4 sec
6.1 sec
448 ms
Click here to check amazing Classtream content for Japan. Otherwise, check out these important facts you probably never knew about classtream.jp
動画配信システム・プラットフォームのことなら安心と信頼のクラストリーム。業界初!2倍速再生でも聞き取りやすい最新技術、機密性の高い情報も安心、大容量動画の圧倒的保存力。初期費用無料!コストパフォーマンス高くご利用可能。
Visit classtream.jpWe analyzed Classtream.jp page load time and found that the first response time was 1.4 sec and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
classtream.jp performance score
name
value
score
weighting
Value4.0 s
23/100
10%
Value9.6 s
0/100
25%
Value10.2 s
8/100
10%
Value1,400 ms
16/100
30%
Value0.361
30/100
15%
Value13.1 s
12/100
10%
1443 ms
341 ms
1360 ms
1274 ms
380 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 49% of them (44 requests) were addressed to the original Classtream.jp, 18% (16 requests) were made to Static.xx.fbcdn.net and 10% (9 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Classtream.jp.
Page size can be reduced by 373.4 kB (20%)
1.8 MB
1.5 MB
In fact, the total size of Classtream.jp main page is 1.8 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. 60% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 46.2 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 9.8 kB, which is 17% 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 46.2 kB or 79% of the original size.
Potential reduce by 43.5 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. Classtream images are well optimized though.
Potential reduce by 139.5 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 139.5 kB or 53% of the original size.
Potential reduce by 144.2 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. Classtream.jp needs all CSS files to be minified and compressed as it can save up to 144.2 kB or 86% of the original size.
Number of requests can be reduced by 30 (34%)
87
57
The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Classtream. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
classtream.jp
1443 ms
ua.js
341 ms
style.css
1360 ms
script.min.js
1274 ms
wp-emoji-release.min.js
380 ms
logo.png
659 ms
tel.png
364 ms
header-trial.png
369 ms
header-request.png
370 ms
header-inquiry.png
658 ms
hero1.jpg
1694 ms
hero1-sp.png
1278 ms
hero2.jpg
1449 ms
hero2-sp.jpg
1955 ms
feature3.png
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feature2.png
993 ms
feature1.png
1374 ms
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2119 ms
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2955 ms
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2074 ms
top_logo1-wpcf_150x56.jpg
1877 ms
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plan0.png
2300 ms
plan2.png
2710 ms
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2763 ms
plan3.png
2611 ms
trial1.png
2661 ms
trial2.png
2603 ms
trial3.png
2779 ms
trial4.png
2978 ms
classtream_news_thum.png
3024 ms
btn-sns-tw.png
2899 ms
btn-sns-fb.png
2947 ms
btn-sns-gp.png
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btn-sns-pc.png
3088 ms
sdk.js
18 ms
banner-live.jpg
3718 ms
cse.js
76 ms
jsapi
35 ms
146 ms
xd_arbiter.php
18 ms
xd_arbiter.php
39 ms
default+ja.css
8 ms
default.css
40 ms
default+ja.I.js
15 ms
default.css
26 ms
icon.ttf
2770 ms
banner-server.jpg
3120 ms
banner-blog.png
2980 ms
ticker-title.png
2835 ms
analytics.js
194 ms
btn.js
228 ms
async-ads.js
84 ms
google_custom_search_watermark.gif
78 ms
ajax-loader.gif
2845 ms
small-logo.png
34 ms
search_box_icon.png
33 ms
clear.png
70 ms
nav_logo114.png
35 ms
collect
30 ms
page.php
215 ms
m83iJTM8ZQF.css
60 ms
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OmIkD0koXXo.css
52 ms
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65 ms
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270 ms
safe_image.php
215 ms
safe_image.php
49 ms
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35 ms
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52 ms
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32 ms
s7jcwEQH7Sx.png
27 ms
GtIpNnEyqq_.png
31 ms
jWwyUJH0aOO.js
3 ms
R9GKCzjAnbk.js
16 ms
AWWjhOengNF.js
16 ms
YnSasnyq68i.js
16 ms
kQf_jlUv-kX.js
16 ms
classtream.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-hidden="true"] elements contain focusable descendents
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
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>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
classtream.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
Page has valid source maps
classtream.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
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 Classtream.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 Classtream.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.
classtream.jp
Open Graph data is detected on the main page of Classtream. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: