Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

nagasawa-mfg.co.jp

長沢製作所

Page Load Speed

7.7 sec in total

First Response

583 ms

Resources Loaded

6.3 sec

Page Rendered

797 ms

About Website

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

建築金物の製造，販売を行う長沢製作所の公式サイトです。製品一覧，導入事例，採用情報等をご覧頂けます。

Visit nagasawa-mfg.co.jp

Key Findings

We analyzed Nagasawa-mfg.co.jp page load time and found that the first response time was 583 ms and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

nagasawa-mfg.co.jp performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value14.6 s

1/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.166

71/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

nagasawa-mfg.co.jp

583 ms

nagasawa-mfg.co.jp

785 ms

www.nagasawa-mfg.co.jp

999 ms

common.css

171 ms

top.css

340 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 88% of them (78 requests) were addressed to the original Nagasawa-mfg.co.jp, 3% (3 requests) were made to Satori.segs.jp and 3% (3 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Nagasawa-mfg.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 192.9 kB (1%)

Content Size

15.3 MB

After Optimization

15.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nagasawa-mfg.co.jp main page is 15.3 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 15.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 42.7 kB

  • Original 51.9 kB
  • After minification 46.5 kB
  • After compression 9.2 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 42.7 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 115.7 kB

  • Original 15.1 MB
  • After minification 15.0 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. Nagasawa Mfg images are well optimized though.

JavaScript Optimization

-19%

Potential reduce by 28.9 kB

  • Original 156.1 kB
  • After minification 154.2 kB
  • After compression 127.2 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 28.9 kB or 19% of the original size.

CSS Optimization

-19%

Potential reduce by 5.6 kB

  • Original 29.8 kB
  • After minification 29.2 kB
  • After compression 24.3 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. Nagasawa-mfg.co.jp needs all CSS files to be minified and compressed as it can save up to 5.6 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (46%)

Requests Now

84

After Optimization

45

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nagasawa Mfg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nagasawa-mfg.co.jp accessibility score

81

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

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.

Impact

Issue

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

nagasawa-mfg.co.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

nagasawa-mfg.co.jp SEO score

97

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nagasawa-mfg.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 Nagasawa-mfg.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 data is detected on the main page of Nagasawa Mfg. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: