3.4 sec in total
423 ms
2.8 sec
163 ms
Welcome to blue.zero.jp homepage info - get ready to check Blue ZERO best content for Japan right away, or after learning these important things about blue.zero.jp
プロバイダー「ZERO」は、低価格で安心・安全のインターネット接続サービスを提供する、GMOインターネットのサービスです。
Visit blue.zero.jpWe analyzed Blue.zero.jp page load time and found that the first response time was 423 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
blue.zero.jp performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value8.5 s
1/100
25%
Value7.4 s
27/100
10%
Value250 ms
84/100
30%
Value0.01
100/100
15%
Value7.9 s
43/100
10%
423 ms
745 ms
340 ms
409 ms
679 ms
Our browser made a total of 52 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Blue.zero.jp, 67% (35 requests) were made to Zero.jp and 19% (10 requests) were made to Cache.img.gmo.jp. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Zero.jp.
Page size can be reduced by 335.9 kB (66%)
512.2 kB
176.3 kB
In fact, the total size of Blue.zero.jp main page is 512.2 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. 30% of websites need less resources to load. Javascripts take 291.0 kB which makes up the majority of the site volume.
Potential reduce by 58.9 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 58.9 kB or 87% of the original size.
Potential reduce by 3.0 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. Blue ZERO images are well optimized though.
Potential reduce by 247.5 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 247.5 kB or 85% of the original size.
Potential reduce by 26.5 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. Blue.zero.jp needs all CSS files to be minified and compressed as it can save up to 26.5 kB or 80% of the original size.
Number of requests can be reduced by 24 (48%)
50
26
The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blue ZERO. 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 from 5 to 1 for CSS and as a result speed up the page load time.
blue.zero.jp
423 ms
zero.jp
745 ms
iepngfix.js
340 ms
style.css
409 ms
this.css
679 ms
script.js
141 ms
script.js
198 ms
prototype.js
492 ms
effects.js
350 ms
dragdrop.js
351 ms
convcast.js
377 ms
gmologo.png
120 ms
internet_for_everyone.png
121 ms
login_btn01.gif
164 ms
banner_wimax2+.jpg
339 ms
banner_emobile03.jpg
480 ms
bnr_yuutai.jpg
324 ms
footerstyle.css
27 ms
headerstyle.min.css
30 ms
footer.css
164 ms
logo_byGMO.gif
162 ms
header_img01.gif
173 ms
header_img02.gif
173 ms
global_menu01.gif
171 ms
global_menu02.gif
160 ms
global_menu03.gif
317 ms
global_menu04.gif
322 ms
main_bg01.gif
505 ms
mainImage_bg01.jpg
839 ms
mainImage_img02.gif
339 ms
mainImage_img03.gif
546 ms
mainImage_img04.gif
473 ms
main_img_bg02.gif
481 ms
login_ttl01.gif
508 ms
login_ttl02.gif
631 ms
login_ttl03.gif
642 ms
login_ttl05.gif
673 ms
loginatt_txt01.gif
677 ms
admission_btn01.gif
725 ms
loginatt_txt02.gif
789 ms
list_img01.gif
803 ms
list_img14.gif
842 ms
news_ttl01.gif
845 ms
news_img01.gif
904 ms
oldusrInfo.gif
946 ms
news_masternet.gif
962 ms
topbottom_bg.png
1002 ms
makeServerCookie.php
158 ms
btn.png
30 ms
logo201601.png
27 ms
open_footer.png
29 ms
close_footer.png
30 ms
blue.zero.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
Form elements do not have associated labels
blue.zero.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
blue.zero.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
JA
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Blue.zero.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 Blue.zero.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.
blue.zero.jp
Open Graph description is not detected on the main page of Blue ZERO. 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: