4.3 sec in total
647 ms
3.4 sec
186 ms
Click here to check amazing Kosoku content for Japan. Otherwise, check out these important facts you probably never knew about kosoku.jp
Visit kosoku.jpWe analyzed Kosoku.jp page load time and found that the first response time was 647 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
kosoku.jp performance score
name
value
score
weighting
Value1.8 s
90/100
10%
Value5.0 s
27/100
25%
Value5.5 s
54/100
10%
Value2,040 ms
7/100
30%
Value0.013
100/100
15%
Value9.9 s
27/100
10%
647 ms
858 ms
346 ms
368 ms
369 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 14% of them (11 requests) were addressed to the original Kosoku.jp, 26% (20 requests) were made to I.yimg.jp and 6% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source I.yimg.jp.
Page size can be reduced by 625.4 kB (61%)
1.0 MB
401.0 kB
In fact, the total size of Kosoku.jp main page is 1.0 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. 45% of websites need less resources to load. Javascripts take 753.9 kB which makes up the majority of the site volume.
Potential reduce by 71.8 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 71.8 kB or 87% of the original size.
Potential reduce by 15.1 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. Kosoku images are well optimized though.
Potential reduce by 517.1 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 517.1 kB or 69% of the original size.
Potential reduce by 21.5 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. Kosoku.jp needs all CSS files to be minified and compressed as it can save up to 21.5 kB or 86% of the original size.
Number of requests can be reduced by 42 (58%)
73
31
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kosoku. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.
kosoku.jp
647 ms
858 ms
newstyle.css
346 ms
load_ad
368 ms
load_ad
369 ms
square_goga.js
925 ms
prototype.js
565 ms
icNames.js
522 ms
icIDs.js
562 ms
completion.js
370 ms
urchin.js
21 ms
user.js
591 ms
ad.js
593 ms
1.gif
571 ms
show
374 ms
site_logo.gif
177 ms
search_form.gif
186 ms
search_button.gif
187 ms
headline.gif
189 ms
news-list-icon.jpg
176 ms
show
361 ms
index.css
649 ms
aceUAC.js
5 ms
dref=http%253A%252F%252Fkosoku.jp%252F
36 ms
adsbygoogle.js
7 ms
ca-pub-4821972993648856.js
166 ms
zrt_lookup.html
38 ms
show_ads_impl.js
84 ms
dref=http%253A%252F%252Fkosoku.jp%252F
18 ms
bizrechaajul15_T2_kaigai_wm2_728x90.jpg
133 ms
adchoicesJP_white.png
181 ms
moatad.js
22 ms
n.js
100 ms
ads
254 ms
osd.js
12 ms
cs.ashx
16 ms
beacon.js
2 ms
10182498458531437249
35 ms
abg.js
37 ms
m_js_controller.js
49 ms
googlelogo_color_112x36dp.png
81 ms
s
19 ms
x_button_blue2.png
20 ms
__utm.gif
39 ms
E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js
4 ms
popup_btl.gif
492 ms
vacantTile.gif
881 ms
28_-4.gif
887 ms
27_-4.gif
1036 ms
28_-5.gif
1036 ms
jsaction
182 ms
28_-3.gif
863 ms
29_-5.gif
868 ms
27_-5.gif
1049 ms
27_-3.gif
891 ms
popup_bottom_t.gif
485 ms
popup_btr.gif
524 ms
close.gif
542 ms
popup_bbl.gif
551 ms
popup_bottomleft.gif
541 ms
popup_bbr.gif
599 ms
popup_bottomright.gif
644 ms
popup_ttl.gif
703 ms
popup_topleft.gif
738 ms
popup_ttr.gif
735 ms
popup_tbl.gif
747 ms
popup_top_b.gif
749 ms
popup_tbr.gif
861 ms
popup_topright.gif
884 ms
ui_forprint.gif
930 ms
ui_jsapi2.png
939 ms
ui_merge_v3.png
1115 ms
yahoologo.gif
898 ms
pin_a_3.gif
1016 ms
29_-4.gif
858 ms
29_-3.gif
886 ms
yml_v2
401 ms
ui
35 ms
kosoku.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-*] attributes do not match their roles
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
Form elements do not have associated labels
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
kosoku.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
Missing source maps for large first-party JavaScript
kosoku.jp SEO score
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kosoku.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 Kosoku.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.
kosoku.jp
Open Graph description is not detected on the main page of Kosoku. 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: