7.1 sec in total
887 ms
5.6 sec
562 ms
Visit costcost21.jp now to see the best up-to-date COSTCO St21 content for Japan and also check out these interesting facts you probably never knew about costcost21.jp
コストコの商品 コストコの商品を自宅にいながら購入できるオンラインショップ COSTCO
Visit costcost21.jpWe analyzed Costcost21.jp page load time and found that the first response time was 887 ms and then it took 6.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
costcost21.jp performance score
name
value
score
weighting
Value8.7 s
0/100
10%
Value14.1 s
0/100
25%
Value13.3 s
2/100
10%
Value1,330 ms
17/100
30%
Value0.284
42/100
15%
Value15.1 s
7/100
10%
887 ms
344 ms
351 ms
362 ms
563 ms
Our browser made a total of 140 requests to load all elements on the main page. We found that 71% of them (99 requests) were addressed to the original Costcost21.jp, 11% (15 requests) were made to Hans-huber.com and 5% (7 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Hans-huber.com.
Page size can be reduced by 756.3 kB (35%)
2.2 MB
1.4 MB
In fact, the total size of Costcost21.jp main page is 2.2 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. 65% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.
Potential reduce by 274.1 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 121.4 kB, which is 40% 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 274.1 kB or 91% of the original size.
Potential reduce by 52.6 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. COSTCO St21 images are well optimized though.
Potential reduce by 246.5 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 246.5 kB or 60% of the original size.
Potential reduce by 183.1 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. Costcost21.jp needs all CSS files to be minified and compressed as it can save up to 183.1 kB or 89% of the original size.
Number of requests can be reduced by 39 (28%)
139
100
The browser has sent 139 CSS, Javascripts, AJAX and image requests in order to completely render the main page of COSTCO St21. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
www.costcost21.jp
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costcost21.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
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 valid value for its [lang] attribute.
costcost21.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
Page has valid source maps
costcost21.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 doesn't use legible font sizes
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Costcost21.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 Costcost21.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.
costcost21.jp
Open Graph description is not detected on the main page of COSTCO St21. 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: