optronics-media.com

https://optronics-media.com· First analyzed 16 May 2026· Updated 16 May 2026

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optronics-media.com

Mobile

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Hosting Provider

XREA

IP Address

183.90.183.162

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Osaka, Japan

ASN

AS37907

Organization

XREA

Server

LiteSpeed

Nameservers

04.dnsv.jp.01.dnsv.jp.02.dnsv.jp.03.dnsv.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.8 s10%

Speed Index

2.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

10.9 MB

135 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

optronics-online-renewCustom

Technology Stack

19 Technologies Detected

Plugins

Wordpress Popular Posts

Event Organiser Gallery Videos

Analytics

Facebook Pixel Microsoft Clarity

Libraries

Other

UI Components

CSS Frameworks

Fonts

Web Servers

Customer Support

SEO Analysis

C62/100

Meta Tags7/15

Content9/12

Headings3/8

Technical19/25

E-E-A-T0/7

Images4/7

Links4/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

optronics-media.comoptronics-media.com

OPTRONICS ONLINE　オプトロニクスオンライン｜ Webの即時性を活かして光技術に限らず，光技術の応用が盛んな医療/バイオ...

Webの即時性を活かして光技術に限らず，光技術の応用が盛んな医療/バイオ分野，宇宙/天文分野，またその他の競合/関連分野を含め，広範囲に取り上げます。毎日更新します。

Title truncated.

Title Length115 chars

Recommended: 50-60 chars (~719px / 580px)

Description Length84 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (115 chars, ~719px). Will be truncated in search results.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (62/69) — critical for accessibility and SEO

8 issues found

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Crawlability

Sitemap

Type: index

24 URLs

24 sub-sitemaps

robots.txt

8 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D41/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

8/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:2%

Words:324

Token eff.:Optimal

Sections/1K:55.6

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.2w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

71/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

5/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

7/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

23/100

1.38 g

CO₂e / view

10.9 MB

Page Weight

Cleaner Than

New Visitor

1.57 g

Returning (cached)

786 mg

Annual (10K/mo)

165.0 kg

Emission Segments

Data Center

307 mg

Network

330 mg

Device

738 mg

Resource Breakdown

JavaScript

297.8 KB

Images

10.2 MB

CSS

336.3 KB

Fonts

31.3 KB

HTML

54.9 KB

Green Hosting Not Verified

XREA

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

06.04.2026

Valid Until

05.07.2026

Subject Alternative Names (4)

optronics-media.comoptronics-media.com.optronics.cfbx.jpwww.optronics-media.comwww.optronics-media.com.optronics.cfbx.jp

SHA-256 Fingerprint

A3:7B:DF:28:E4:D0:A6:66:A2:36:44:14:1A:DE:9F:8F:60:6C:DA:AA...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sat, 16 May 2026 19:46:12 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

dmail.kagoya.net

Domain Information

optronics-media.com

Domain Age

17y 2m

Created

18.03.2009

Expires

18.03.2027

Last Updated

02.03.2026

Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

69/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Noto Sans JP

WCAG AA

72/100

Readability

/30

18/30

14px · LH 1.57

Hierarchy

/20

12/20

1.14x ratio · ✓ H1→H6

WCAG

/25

22/25

5.74:1 min contrast

Performance

/25

20/25

1 font · 1 req

Heading Font

Noto Sans JP

Sans16px

Body Font

Noto Sans JP

Sans14px

Contrast Ratio

5.74:1

WCAG AA (≥4.5:1)

Reading Comfort

~40 CPL

Narrow lines

16px

17px

15px

14px

Minor Second

Scale

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.57 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

GGoogle FontsFluid Type (rem)Flesch 46

Color Palette

9 unique colors

14.8:1 AAA Light

#ffffff

Background· 50.199999999999996%

#29272b

Text· 5.9%

#9f876f

Primary· 7.3%

#594344

Secondary· 5.2%

#e6daa8

Accent· 2%

Business & Marketing Stack

4 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

optronics-media.com(5)pi.pardot.com(2)connect.facebook.net(2)googletagmanager.com(2)scripts.clarity.ms(1)

Website Identity