Access nagai.co.jp. 自然の温もりを世界から｜建築資材販売

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value16.3 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value200 ms

89/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

nagai.co.jp

732 ms

responsive.css

322 ms

style.css

487 ms

jquery.min.js

31 ms

scrolltopcontrol.js

332 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 57% of them (36 requests) were addressed to the original Nagai.co.jp, 16% (10 requests) were made to Static.xx.fbcdn.net and 14% (9 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Nagai.co.jp.

Content Size

3.0 MB

After Optimization

2.9 MB

In fact, the total size of Nagai.co.jp main page is 3.0 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 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 28.8 kB

Original 36.4 kB
After minification 29.6 kB
After compression 7.6 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 6.7 kB, which is 19% 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 28.8 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 23.3 kB

Original 2.9 MB
After minification 2.8 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. Nagai images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 44.1 kB

Original 73.9 kB
After minification 53.8 kB
After compression 29.8 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 44.1 kB or 60% of the original size.

CSS Optimization

-84%

Potential reduce by 52.0 kB

Original 62.0 kB
After minification 46.3 kB
After compression 10.0 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. Nagai.co.jp needs all CSS files to be minified and compressed as it can save up to 52.0 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nagai. 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 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

JA
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nagai.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 Nagai.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.

Social Sharing Optimization

nagai.co.jp

Open Graph description is not detected on the main page of Nagai. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

自然の温もりを世界から ｜ 建築資材販売 ｜ 株式会社ナガイ

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

nagai.co.jp

responsive.css

style.css

jquery.min.js

scrolltopcontrol.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

nagai.co.jp

responsive.css

style.css

jquery.min.js

scrolltopcontrol.js

jquery_cycle2.js

catalabo.js

sdk.js

logo.jpg

image05.jpg

image06.jpg

image07.jpg

image02.jpg

image03.jpg

image04.jpg

pdf.gif

colorfulpaneling.jpg

euro_oak.jpg

wanraku.jpg

colorfulfloor.jpg

airfresh.jpg

before.jpg

hemlock.jpg

hemlock_image.jpg

vintage.jpg

antique_door.jpg

countrycolor_door.jpg

mattecolor_door.jpg

matte_handle.jpg

clear.jpg

2kenzai.jpg

webshop.jpg

webshop_yahoo.jpg

madoshop.jpg

tousitsu01.jpg

tousitsu02.jpg

tousitsu03.jpg

style.css

analytics.js

xd_arbiter.php

xd_arbiter.php

collect

like_box.php

自然の温もりを世界から｜建築資材販売｜株式会社ナガイ