4.1 sec in total
552 ms
3.1 sec
382 ms
Visit irtnet.jp now to see the best up-to-date IRT Net content for Japan and also check out these interesting facts you probably never knew about irtnet.jp
Visit irtnet.jpWe analyzed Irtnet.jp page load time and found that the first response time was 552 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
irtnet.jp performance score
name
value
score
weighting
Value3.7 s
30/100
10%
Value9.9 s
0/100
25%
Value5.3 s
59/100
10%
Value110 ms
97/100
30%
Value0
100/100
15%
Value4.7 s
80/100
10%
552 ms
186 ms
318 ms
508 ms
338 ms
Our browser made a total of 53 requests to load all elements on the main page. We found that all of those requests were addressed to Irtnet.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Irtnet.jp.
Page size can be reduced by 185.5 kB (16%)
1.1 MB
954.5 kB
In fact, the total size of Irtnet.jp main page is 1.1 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. 20% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 27.3 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. This page needs HTML code to be minified as it can gain 4.7 kB, which is 15% 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 27.3 kB or 84% of the original size.
Potential reduce by 87.7 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. IRT Net images are well optimized though.
Potential reduce by 64.1 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 64.1 kB or 65% of the original size.
Potential reduce by 6.5 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. Irtnet.jp needs all CSS files to be minified and compressed as it can save up to 6.5 kB or 79% of the original size.
Number of requests can be reduced by 6 (12%)
52
46
The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IRT Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
irtnet.jp
552 ms
main.css
186 ms
main.js
318 ms
jquery-1.7.2.min.js
508 ms
index.css
338 ms
gallery.js
341 ms
logo.png
196 ms
arrow_r.png
186 ms
navi_back.png
172 ms
navi_top_off.png
183 ms
navi_news_off.png
187 ms
navi_products_off.png
326 ms
navi_support_off.png
340 ms
navi_user_off.png
354 ms
navi_update_off.png
360 ms
navi_faq_off.png
364 ms
img_back.png
374 ms
top_edouga6.png
1261 ms
top_sakkyoku3.png
1113 ms
top_mitsumori.png
1184 ms
top_hajideji.png
1376 ms
top_edouga6_bnr.png
545 ms
top_sakkyoku3_bnr.png
736 ms
top_mitsumori_bnr.png
718 ms
top_hajideji_bnr.png
896 ms
cate_series.png
919 ms
arrow_s.png
1073 ms
cate_biz.png
1098 ms
cate_music.png
1250 ms
cate_pac.png
1286 ms
back_bottom.png
1272 ms
bar_products.png
1353 ms
pc_meishi.png
1580 ms
digicame_edit_management.png
1423 ms
bar_news.png
1430 ms
bar_update.png
1462 ms
btn_catalog.png
1537 ms
btn_shop.png
1560 ms
win10.png
1599 ms
win7_8_8_1.png
1595 ms
win8_inst01.png
1651 ms
win8_inst02.png
1730 ms
user_no_osirase.png
1587 ms
corner_lt.png
1599 ms
spacer.png
1594 ms
corner_rt.png
1595 ms
rakuten_dl.png
1652 ms
corner_lb.png
1590 ms
corner_rb.png
1593 ms
btn_pagetop.png
1592 ms
back_footer.png
1589 ms
arrow_w.png
1590 ms
top_edouga6_bnr_now.png
1654 ms
irtnet.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.
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
irtnet.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
irtnet.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
JA
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Irtnet.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 Irtnet.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.
irtnet.jp
Open Graph description is not detected on the main page of IRT Net. 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: