Access jr-central.co.jp. ＪＲ東海 Central Japan Railway Company

name

value

score

weighting

FCP (First Contentful Paint)

Value9.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value48.7 s

0/100

25%

SI (Speed Index)

Value22.8 s

0/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.158

74/100

15%

TTI (Time to Interactive)

Value34.6 s

0/100

10%

jr-central.co.jp

1414 ms

gtm.js

78 ms

reset.css

641 ms

swiper-bundle.min.css

334 ms

config.js

642 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 72% of them (34 requests) were addressed to the original Jr-central.co.jp, 6% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Jr-central.co.jp.

Content Size

4.8 MB

After Optimization

4.0 MB

In fact, the total size of Jr-central.co.jp main page is 4.8 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. 40% of websites need less resources to load. Images take 4.7 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 44.9 kB

Original 53.3 kB
After minification 41.1 kB
After compression 8.3 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 12.1 kB, which is 23% 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 44.9 kB or 84% of the original size.

Image Optimization

-16%

Potential reduce by 765.0 kB

Original 4.7 MB
After minification 3.9 MB

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. Obviously, Jr Central needs image optimization as it can save up to 765.0 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 550 B

Original 89.6 kB
After minification 89.6 kB
After compression 89.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-72%

Potential reduce by 12.8 kB

Original 17.6 kB
After minification 17.1 kB
After compression 4.9 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. Jr-central.co.jp needs all CSS files to be minified and compressed as it can save up to 12.8 kB or 72% of the original size.

Requests Now

After Optimization

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jr Central. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.