Access opto.co.jp. 自動認識業界のリーディングカンパニー株式会社オプトエレクトロニクス

Report Summary

About Website

Click here to check amazing Opto content for Japan. Otherwise, check out these important facts you probably never knew about opto.co.jp

オプトエレクトロニクスは、日本のOPTOELECTRONICS CO.,LTD.、オランダのOpticon Sensors Europe B.V.、アメリカのOpticon,Inc. を主な拠点として、バーコードスキャナ各種をグローバルに提供しています。

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name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.6 s

100/100

25%

SI (Speed Index)

Value0.9 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.6 s

100/100

10%

opto.co.jp

528 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Opto.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (528 ms) belongs to the original domain Opto.co.jp.

Content Size

382.9 kB

After Optimization

310.0 kB

In fact, the total size of Opto.co.jp main page is 382.9 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 265.7 kB which makes up the majority of the site volume.

HTML Optimization

-10%

Potential reduce by 6 B

Original 59 B
After minification 59 B
After compression 53 B

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. This web page is already compressed.

Image Optimization

-0%

Potential reduce by 363 B

Original 265.7 kB
After minification 265.3 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. Opto images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 50.8 kB

Original 90.7 kB
After minification 84.2 kB
After compression 39.9 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 50.8 kB or 56% of the original size.

CSS Optimization

-82%

Potential reduce by 21.7 kB

Original 26.5 kB
After minification 15.7 kB
After compression 4.7 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. Opto.co.jp needs all CSS files to be minified and compressed as it can save up to 21.7 kB or 82% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

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

Document doesn't have a <title> element

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

High

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

Search Engine Optimization Advices

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

High

Document doesn't have a <title> element

Language and Encoding

Language Detected

JA
Language Claimed

N/A
Encoding

N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opto.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 Opto.co.jp main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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