alterna.co.jp

https://alterna.co.jp· First analyzed 21 May 2026· Updated 21 May 2026

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alterna.co.jp

Mobile

Sponsored

Hosting Provider

BETINC

IP Address

162.43.105.130

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS131965

Organization

BETINC

Server

Nginx

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7.5 MB

226 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.8.5

Infrastructure

Hosting

BETINC

Technology Stack

27 Technologies Detected

Plugins

All in One SEO

Snow Monkey Forms

Contact Form 7

Contact Form 7 Add Confirm

Paid Memberships Pro Ultimate Member Um User Bookmarks Easy Fancybox Pdf Embedder Miniorange Login Openid Advanced Ads

Yoast SEO

Jetpack

UI Components

Swiper Slick Carousel Lightbox Fancybox

Libraries

CSS Frameworks

Analytics

Other

Icon Libraries

Web Servers

SEO Analysis

B70/100

Meta Tags5/15

Content8/12

Headings3/8

Technical22/25

E-E-A-T2/7

Images5/7

Links5/5

URL5/5

Social5/5

Freshness4/4

Mobile3/4

Indexability3/3

alterna.co.jpalterna.co.jp

オルタナ - 「サステナ経営」の潮流を捉える

Alterna Posts – hello from the saved content! Alterna P

Title Length22 chars

Recommended: 50-60 chars (~136px / 580px)

Description Length55 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

20 URLs

20 sub-sitemaps

robots.txt

3 rules

Local SEO

Local Search Readiness

14/100

Poor

4 13

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

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

7/25

Citation

15/25

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:3%

Words:1,000

Token eff.:Optimal

Sections/1K:6

Depth:1/5

Structured Data

9 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary349w

Descriptive Headingsavg 1.1w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

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.

77/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

13/20

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

Forms & Inputs

15/15

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

11/15

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

ARIA & Roles

8/15

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

3 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.

29/100

953 mg

CO₂e / view

7.5 MB

Page Weight

Cleaner Than

New Visitor

1.09 g

Returning (cached)

544 mg

Annual (10K/mo)

114.3 kg

Emission Segments

Data Center

213 mg

Network

229 mg

Device

511 mg

Resource Breakdown

JavaScript

569.0 KB

Images

1.3 MB

CSS

5.6 MB

HTML

64.9 KB

Green Hosting Not Verified

BETINC

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

55d

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

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (2)

alterna.co.jpwww.alterna.co.jp

SHA-256 Fingerprint

50:CC:0C:CD:86:B7:D6:9A:32:6D:CF:9C:76:E6:A8:C3:0D:39:72:F7...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

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

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 21 May 2026 02:36:51 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

link

<https://www.alterna.co.jp/wp-json/>; rel="https://api.w.org...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mail.alterna.co.jp

Domain Information

alterna.co.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

78/100

Mobile Friendly4 breakpoints

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

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Noto Sans JP

WCAG Partial

66/100

Readability

/30

22/30

14px · LH 1.50

Hierarchy

/20

8/20

WCAG

/25

18/25

1:1 min contrast

Performance

/25

18/25

1 font · 4 req

Heading Font

Noto Sans JP

Sans

Body Font

Noto Sans JP

Sans14px

Contrast Ratio

1:1

7 issues

Reading Comfort

~48 CPL

Optimal (45–75)

24px

20px

14px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 12/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

Buy on MyFontsFluid Type (rem)Flesch 13

Color Palette

11 unique colors

5.47:1 AA Light

#ffffff

Background· 63.30000000000001%

#5d6d64

Secondary· 4.6%

#03523a

Primary· 8.2%

#383143

Secondary· 4.1%

#c6d1cf

Secondary· 3.4%

#8ca39c

Secondary· 3.3%

#175d46

Accent· 1.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

alterna.co.jp(19)googletagmanager.com(1)

Website Identity

オルタナ

Organization

「サステナ経営」の潮流を捉える

www.alterna.co.jp/

Location detected: 🇯🇵 Japanvia tld

Social Profiles

Facebook X (Twitter)

Sponsored

Last analyzed: 21 May 2026 at 02:37

Historical Analysis & Change Tracking