18.9 sec in total
5.7 sec
13.1 sec
143 ms
Click here to check amazing Four C content. Otherwise, check out these important facts you probably never knew about four-c.co.jp
合同会社4Cの公式サイト
Visit four-c.co.jpWe analyzed Four-c.co.jp page load time and found that the first response time was 5.7 sec and then it took 13.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
four-c.co.jp performance score
name
value
score
weighting
Value8.7 s
0/100
10%
Value9.2 s
1/100
25%
Value25.2 s
0/100
10%
Value20 ms
100/100
30%
Value0.001
100/100
15%
Value9.0 s
34/100
10%
5688 ms
34 ms
37 ms
358 ms
23 ms
Our browser made a total of 22 requests to load all elements on the main page. We found that 59% of them (13 requests) were addressed to the original Four-c.co.jp, 9% (2 requests) were made to Cdn.jsdelivr.net and 9% (2 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (5.7 sec) belongs to the original domain Four-c.co.jp.
Page size can be reduced by 143.2 kB (16%)
907.4 kB
764.2 kB
In fact, the total size of Four-c.co.jp main page is 907.4 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. 20% of websites need less resources to load. Images take 731.0 kB which makes up the majority of the site volume.
Potential reduce by 15.5 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 15.5 kB or 73% of the original size.
Potential reduce by 1.3 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. Four C images are well optimized though.
Potential reduce by 2.8 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 2.8 kB or 83% of the original size.
Potential reduce by 123.6 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. Four-c.co.jp needs all CSS files to be minified and compressed as it can save up to 123.6 kB or 81% of the original size.
Number of requests can be reduced by 12 (63%)
19
7
The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Four C. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
four-c.co.jp
5688 ms
all.css
34 ms
css
37 ms
reset.css
358 ms
slick.css
23 ms
drawer.css
690 ms
style.css
859 ms
front.css
522 ms
style.min.css
1601 ms
pagenavi-css.css
371 ms
jquery-3.4.1.min.js
22 ms
slick.min.js
4 ms
iscroll.min.js
35 ms
drawer.min.js
44 ms
script.js
373 ms
logo.png
175 ms
image7.jpg
1198 ms
image8.jpg
1536 ms
image9.jpg
536 ms
image10.jpg
1195 ms
ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf
18 ms
ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpcBO5Xk.ttf
24 ms
four-c.co.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.
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
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
four-c.co.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
Page has valid source maps
four-c.co.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
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Four-c.co.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 Four-c.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.
four-c.co.jp
Open Graph data is detected on the main page of Four C. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: