Access neribun.or.jp. 公益財団法人練馬区文化振興協会(練馬区立練馬文化センター/練馬区立大泉学園ゆめりあホール/練馬区立石神井公園ふるさと文化館・分室/練馬区立美術館)

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.178

68/100

15%

TTI (Time to Interactive)

Value10.0 s

27/100

10%

neribun.or.jp

716 ms

zaidan_001.css

342 ms

styleswitcher.js

339 ms

styleswitcher.js

355 ms

swfobject.js

361 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 84% of them (76 requests) were addressed to the original Neribun.or.jp, 4% (4 requests) were made to Platform.twitter.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Neribun.or.jp.

Content Size

567.4 kB

After Optimization

478.2 kB

In fact, the total size of Neribun.or.jp main page is 567.4 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. 45% of websites need less resources to load. Images take 442.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 27.3 kB

Original 34.6 kB
After minification 33.9 kB
After compression 7.3 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. 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 27.3 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 12.7 kB

Original 442.2 kB
After minification 429.5 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. Neribun images are well optimized though.

JavaScript Optimization

-54%

Potential reduce by 47.4 kB

Original 87.2 kB
After minification 85.8 kB
After compression 39.8 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 47.4 kB or 54% of the original size.

CSS Optimization

-52%

Potential reduce by 1.8 kB

Original 3.4 kB
After minification 3.2 kB
After compression 1.6 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. Neribun.or.jp needs all CSS files to be minified and compressed as it can save up to 1.8 kB or 52% of the original size.

Requests Now

After Optimization

The browser has sent 90 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Neribun. 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 7 to 1 for CSS and as a result speed up the page load time.