8.9 sec in total
1.5 sec
6.9 sec
440 ms
Click here to check amazing Blueandsnow content. Otherwise, check out these important facts you probably never knew about blueandsnow.com
東京都世田谷区のダイビングスクール【ブルーアンドスノー】は、ライセンス発行枚数1位を10年獲得しております!海を楽しみ、ダイビングを通して交友の輪を広げるなら当店をご利用下さい。毎年300本を超えるツアーや、様々な企画をご用意しております。説明会も毎日開催しております。当店で資格を楽しくとりましょう!
Visit blueandsnow.comWe analyzed Blueandsnow.com page load time and found that the first response time was 1.5 sec and then it took 7.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
blueandsnow.com performance score
name
value
score
weighting
Value9.6 s
0/100
10%
Value28.6 s
0/100
25%
Value29.1 s
0/100
10%
Value2,200 ms
6/100
30%
Value0.062
97/100
15%
Value35.7 s
0/100
10%
1534 ms
373 ms
911 ms
377 ms
541 ms
Our browser made a total of 101 requests to load all elements on the main page. We found that 56% of them (57 requests) were addressed to the original Blueandsnow.com, 14% (14 requests) were made to Scontent.xx.fbcdn.net and 12% (12 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Blueandsnow.com.
Page size can be reduced by 628.5 kB (35%)
1.8 MB
1.2 MB
In fact, the total size of Blueandsnow.com 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. 50% of websites need less resources to load. Images take 998.5 kB which makes up the majority of the site volume.
Potential reduce by 19.3 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 19.3 kB or 71% of the original size.
Potential reduce by 29.3 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. Blueandsnow images are well optimized though.
Potential reduce by 323.9 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 323.9 kB or 69% of the original size.
Potential reduce by 256.0 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. Blueandsnow.com needs all CSS files to be minified and compressed as it can save up to 256.0 kB or 83% of the original size.
Number of requests can be reduced by 38 (40%)
96
58
The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blueandsnow. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
blueandsnow.com
1534 ms
common.css
373 ms
diving.css
911 ms
lightbox.css
377 ms
top.css
541 ms
slick.css
378 ms
jquery-1.11.1.min.js
1431 ms
common.js
734 ms
slick.js
1448 ms
lightbox.js
563 ms
reset.css
412 ms
layout.css
726 ms
parts.css
731 ms
mdf_blue.gif
596 ms
bg_body1.jpg
214 ms
close.png
362 ms
loading.gif
363 ms
prev.png
382 ms
next.png
382 ms
bg_body2.jpg
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bg_body3.jpg
940 ms
logo_bs.gif
750 ms
logo_mark.png
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nav_global.png
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slide2.jpg
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slide1.jpg
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txt_top1.gif
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bnr_googleplus.gif
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bnr_owd2012.gif
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bnr_rental.png
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bnr_snow.jpg
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bnr_point.gif
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bnr_fundive.gif
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bnr_voice.gif
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201411_diamond.jpg
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p_history9.jpg
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bnr_side_seminor_off.gif
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bnr_side_siryo_off.gif
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bnr_side_blog_off.gif
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bnr_side_circle_off.gif
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bnr_side_movie_off.gif
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tit_side_contact.png
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tit_side_partner.png
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btn_side_kashiwa_off.png
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btn_pagetop.gif
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widgets.js
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frm1_bg.jpg
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frm1_top.jpg
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MZJO7V6YrkU
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like.php
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likebox.php
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analytics.js
47 ms
button.0308b81ff1714e446f674b5b9793f2cd.js
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bg_content.gif
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collect
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www-embed-player-vfl8xM8me.css
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www-embed-player.js
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base.js
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tweet_button.b9740740e0bcf9b0657c5b11bd4388da.ja.html
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qeKvIRsJabD.js
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nav_side.png
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arrow1.gif
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bg_footer.jpg
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none
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prev.png
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jot
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Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js
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ad_status.js
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kyEKgjk51ZE.css
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kTub4bakEmM.css
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q68gy-v_YMF.js
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zN7GBFwfMP4uA6AR0HCoLQ.ttf
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mdf_blue.gif
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next.png
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ajax-loader.gif
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blueandsnow.com 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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
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
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>).
blueandsnow.com 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
blueandsnow.com 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 Blueandsnow.com 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 Blueandsnow.com 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.
blueandsnow.com
Open Graph description is not detected on the main page of Blueandsnow. 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: