Tools & Wizards About Us
nishimura-opt.co.jp screenshot

Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

nishimura-opt.co.jp

国内外で利用される天体観測機器メーカー | 株式会社西村製作所

Page Load Speed

2.3 sec in total

First Response

484 ms

Resources Loaded

1.6 sec

Page Rendered

179 ms

nishimura-opt.co.jp screenshot

About Website

Welcome to nishimura-opt.co.jp homepage info - get ready to check Nishimura Opt best content for Japan right away, or after learning these important things about nishimura-opt.co.jp

天体望遠鏡や太陽望遠鏡、特殊観測機器などの天体観測機器の専門メーカーである株式会社西村製作所のホームページです。国内外100以上の教育・研究機関にてご利用いただいております。株式会社西村製作所は天体観測機器を企画、設計からメンテナンスまで対応することで品質向上に役立てています。

Visit nishimura-opt.co.jp

Key Findings

We analyzed Nishimura-opt.co.jp page load time and found that the first response time was 484 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

nishimura-opt.co.jp performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

98/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

nishimura-opt.co.jp

484 ms

common.css

338 ms

jquery.js

339 ms

common.js

393 ms

ga.js

39 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 86% of them (12 requests) were addressed to the original Nishimura-opt.co.jp, 14% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (717 ms) belongs to the original domain Nishimura-opt.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 12.8 kB (24%)

Content Size

54.5 kB

After Optimization

41.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nishimura-opt.co.jp main page is 54.5 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. Only 10% of websites need less resources to load. Images take 23.7 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 3.9 kB

  • Original 6.0 kB
  • After minification 5.4 kB
  • After compression 2.2 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. This page needs HTML code to be minified as it can gain 643 B, which is 11% 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 3.9 kB or 64% of the original size.

Image Optimization

-12%

Potential reduce by 2.9 kB

  • Original 23.7 kB
  • After minification 20.7 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. Obviously, Nishimura Opt needs image optimization as it can save up to 2.9 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-79%

Potential reduce by 6.0 kB

  • Original 7.7 kB
  • After minification 5.7 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. Nishimura-opt.co.jp needs all CSS files to be minified and compressed as it can save up to 6.0 kB or 79% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nishimura Opt. According to our analytics all requests are already optimized.

Network Requests Diagram

nishimura-opt.co.jp

nishimura-opt.co.jp

484 ms

common.css

common.css

338 ms

jquery.js

jquery.js

339 ms

common.js

common.js

393 ms

ga.js

ga.js

39 ms

logo.jpeg

logo.jpeg

496 ms

bg_menu.gif

bg_menu.gif

335 ms

bg_menu_on.gif

bg_menu_on.gif

335 ms

bg_main_h3.gif

bg_main_h3.gif

384 ms

bg_contents.gif

bg_contents.gif

577 ms

bg_sub_h3.gif

bg_sub_h3.gif

388 ms

bg_sub_list.gif

bg_sub_list.gif

666 ms

bg_pagetop.gif

bg_pagetop.gif

717 ms

__utm.gif

__utm.gif

13 ms

Accessibility Review

nishimura-opt.co.jp accessibility score

72

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

nishimura-opt.co.jp best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

nishimura-opt.co.jp SEO score

67

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Nishimura-opt.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 Nishimura-opt.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

nishimura-opt.co.jp

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