Access arc-eco.co.jp. 【北海道】株式会社アーク｜北海道を代表する再生可能エネルギーのリーディングカンパニーとなり、脱炭素社会実現へ貢献する企業になる

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value90 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.868

4/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

arc-eco.co.jp

930 ms

reset.css

348 ms

style.css

360 ms

flexslider.css

358 ms

prettyPhoto.css

361 ms

Our browser made a total of 126 requests to load all elements on the main page. We found that 94% of them (119 requests) were addressed to the original Arc-eco.co.jp, 2% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (8.4 sec) belongs to the original domain Arc-eco.co.jp.

Content Size

10.0 MB

After Optimization

9.7 MB

In fact, the total size of Arc-eco.co.jp main page is 10.0 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. 60% of websites need less resources to load. Images take 9.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 51.4 kB

Original 62.3 kB
After minification 44.8 kB
After compression 11.0 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. This page needs HTML code to be minified as it can gain 17.5 kB, which is 28% 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 51.4 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 231.8 kB

Original 9.9 MB
After minification 9.6 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. Arc Eco images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 5.3 kB

Original 35.7 kB
After minification 35.5 kB
After compression 30.4 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 5.3 kB or 15% of the original size.

CSS Optimization

-26%

Potential reduce by 3.0 kB

Original 11.7 kB
After minification 11.7 kB
After compression 8.7 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. Arc-eco.co.jp needs all CSS files to be minified and compressed as it can save up to 3.0 kB or 26% of the original size.

Requests Now

124

After Optimization

113

The browser has sent 124 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Arc Eco. 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 8 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 the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

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

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

UTF-8

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

arc-eco.co.jp

Open Graph description is not detected on the main page of Arc Eco. 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

【北海道】株式会社アーク｜北海道を代表する再生可能エネルギーのリーディングカンパニーとなり、脱炭素社会実現へ貢献する企業になる

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

arc-eco.co.jp

reset.css

style.css

flexslider.css

prettyPhoto.css

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

arc-eco.co.jp

reset.css

style.css

flexslider.css

prettyPhoto.css

top.css

msl.css

pc.css

jquery-1.10.2.min.js

jquery.flexslider-min.js

jquery.prettyPhoto.js

png.js

font-awesome.min.css

bnr_arc_dl.png

arc-image-ten7.jpg

arc-image-chi3.jpg

deco_01.png

btn_00.png

logo4c.svg

isomarkhead2.svg

txt_02_b.gif

slide_keyimage4.png

slide_arcvpc2022b.png

slide_arcvps2022b.png

slide_cmtomoni2022.png

slide_tpw2.png

slide_arc_vps5.png

slide_35_2.png

slide_fitright_used2.png

slide_chikuden_cm3.png

slide_32.png

slide_expobooth2.png

slide_arcvpr2022b.png

slide_27c.png

slide_sdome2022.png

slide_26b.png

slide_33.png

slide_30.png

slide_31.png

slide_sf500pnl.png

slide_04.png

slide_05_5.png

slide_opcon_update.png