Tools & Wizards About Us

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

isover.co.jp

ホームページ | マグ・イゾベール(株)

Page Load Speed

3.6 sec in total

First Response

365 ms

Resources Loaded

2.8 sec

Page Rendered

382 ms

About Website

Visit isover.co.jp now to see the best up-to-date Isover content for Japan and also check out these interesting facts you probably never knew about isover.co.jp

マグ・イゾベール株式会社は、リサイクルガラスから生まれる安心安全なエコ断熱材・吸音材「グラスウール」を通して、快適で健康的な生活空間の創造や、省エネによる社会の持続可能な発展に貢献します。

Visit isover.co.jp

Key Findings

We analyzed Isover.co.jp page load time and found that the first response time was 365 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

isover.co.jp performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value950 ms

29/100

30%

CLS (Cumulative Layout Shift)

Value0.256

48/100

15%

TTI (Time to Interactive)

Value12.0 s

16/100

10%

Network Requests Diagram

isover.co.jp

365 ms

www.isover.co.jp

395 ms

css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css

88 ms

css_NQgNhAnk1kk7DrxE5Q0R3ovlJo7hNVjRg_vyqwcxias.css

170 ms

css_Hj-L7XQcE0qfyJRECGV_H0uiR6AMwoPoTuTUbvzzim0.css

173 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 82% of them (41 requests) were addressed to the original Isover.co.jp, 6% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Isover.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 785.3 kB (40%)

Content Size

2.0 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Isover.co.jp main page is 2.0 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. 50% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 72.4 kB

  • Original 85.9 kB
  • After minification 79.3 kB
  • After compression 13.5 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 72.4 kB or 84% of the original size.

Image Optimization

-8%

Potential reduce by 86.6 kB

  • Original 1.1 MB
  • After minification 1.0 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. Isover images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 178.4 kB

  • Original 246.9 kB
  • After minification 183.9 kB
  • After compression 68.5 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 178.4 kB or 72% of the original size.

CSS Optimization

-85%

Potential reduce by 447.9 kB

  • Original 525.7 kB
  • After minification 513.6 kB
  • After compression 77.9 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. Isover.co.jp needs all CSS files to be minified and compressed as it can save up to 447.9 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (46%)

Requests Now

48

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Isover. 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.

Network Requests Diagram

Accessibility Review

isover.co.jp accessibility score

99

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

isover.co.jp best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

isover.co.jp SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Isover.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 Isover.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

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