3.6 sec in total
771 ms
2.6 sec
143 ms
Welcome to datasystem.co.jp homepage info - get ready to check Datasystem best content for Japan right away, or after learning these important things about datasystem.co.jp
カーアフターパーツ総合メーカー R-SPEC データシステム
Visit datasystem.co.jpWe analyzed Datasystem.co.jp page load time and found that the first response time was 771 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster. This domain responded with an error, which can significantly jeopardize Datasystem.co.jp rating and web reputation
datasystem.co.jp performance score
name
value
score
weighting
Value3.2 s
42/100
10%
Value3.2 s
72/100
25%
Value4.5 s
72/100
10%
Value930 ms
30/100
30%
Value0.023
100/100
15%
Value7.7 s
45/100
10%
771 ms
387 ms
1088 ms
1086 ms
1112 ms
Our browser made a total of 20 requests to load all elements on the main page. We found that all of those requests were addressed to Datasystem.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Datasystem.co.jp.
Page size can be reduced by 22.3 kB (67%)
33.3 kB
11.0 kB
In fact, the total size of Datasystem.co.jp main page is 33.3 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. CSS take 24.4 kB which makes up the majority of the site volume.
Potential reduce by 3.0 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 3.0 kB or 62% of the original size.
Potential reduce by 30 B
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. Datasystem images are well optimized though.
Potential reduce by 19.2 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. Datasystem.co.jp needs all CSS files to be minified and compressed as it can save up to 19.2 kB or 79% of the original size.
We found no issues to fix!
4
4
The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Datasystem. According to our analytics all requests are already optimized.
datasystem.co.jp
771 ms
bootstrap.min.css
387 ms
open-sans.css
1088 ms
apache_pb.gif
1086 ms
poweredby.png
1112 ms
OpenSans-Light.woff
194 ms
OpenSans-Regular.woff
191 ms
OpenSans-Semibold.woff
184 ms
OpenSans-Bold.woff
188 ms
OpenSans-ExtraBold.woff
368 ms
OpenSans-Semibold.ttf
187 ms
OpenSans-Bold.ttf
192 ms
OpenSans-Light.ttf
197 ms
OpenSans-Regular.ttf
193 ms
OpenSans-ExtraBold.ttf
185 ms
OpenSans-Semibold.svg
188 ms
OpenSans-Bold.svg
194 ms
OpenSans-Light.svg
193 ms
OpenSans-Regular.svg
191 ms
OpenSans-ExtraBold.svg
184 ms
datasystem.co.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
button, link, and menuitem elements do not have accessible names.
[role] values are not valid
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
datasystem.co.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
datasystem.co.jp SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
JA
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Datasystem.co.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 Datasystem.co.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.
datasystem.co.jp
Open Graph description is not detected on the main page of Datasystem. 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: