sustainablebrands.jp

https://sustainablebrands.jp· First analyzed 31 May 2026· Updated 31 May 2026

Export

Mobile

Sponsored

Hosting Provider

Vercel

vercel.com

IP Address

76.76.21.21

Site Location

🇯🇵 Japanvia tld

Server Location

🇺🇸 Walnut, United States

ASN

AS16509

Organization

Vercel, Inc

Server

Vercel

Nameservers

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

Performance

Core Web Vitals

Weight

First Contentful Paint

2.5 s10%

Speed Index

3.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

250 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

CMS

WordPress

Infrastructure

Platform

Vercel

CDN

Vercel Image

Technology Stack

12 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Segment

Advertising

Google Ads Google AdSense

Plugins

Liquid Speech Balloon

Meta Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

Platforms

SEO Analysis

C68/100

Meta Tags14/15

Content8/12

Headings3/8

Technical19/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

sustainablebrands.jpsustainablebrands.jp

サステナブル・ブランドジャパン | Sustainable Brands Japan

Sustainable Brands Japan(サステナブル・ブランドジャパン)は、サステナビリティやSDGs、ESGに関する国内外のニュースを配信するメディアです。環境や社会、経済、ビジネス、ブランド、地域、コミュニティなどをテーマに幅広く情報を提供しています。

Title Length43 chars

Recommended: 50-60 chars (~260px / 580px)

Description Length134 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (43/63) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

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

Sponsored

AI & LLM Readiness

D44/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

14/25

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

def. lists

Text ratio:2%

Words:422

Token eff.:Optimal

Sections/1K:28.4

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary55w

Descriptive Headingsavg 1.3w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

76/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

10/15

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

9/15

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.

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.

51/100

314 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

359 mg

Returning (cached)

179 mg

Annual (10K/mo)

37.7 kg

Emission Segments

Data Center

15 mg

Network

92 mg

Device

206 mg

Resource Breakdown

JavaScript

219.6 KB

Images

10.0 KB

CSS

67.4 KB

Fonts

2.7 MB

HTML

19.3 KB

Green Hosting Verified

Vercel

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

30d

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

01.04.2026

Valid Until

30.06.2026

Subject Alternative Names (1)

www.sustainablebrands.jp

SHA-256 Fingerprint

01:FB:55:91:BB:FD:88:43:E6:E5:2A:61:D0:6B:D0:D5:0A:C7:43:57...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

age

181413

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-disposition

inline

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxin1.airnet.ne.jp

mxin2.airnet.ne.jp

Domain Information

sustainablebrands.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.

72/100

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, minimum-scale=1.0

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

__Zen_Kaku_Gothic_New_49e4ed

WCAG Partial

49/100

Readability

/30

12/30

13px · LH 1.75

Hierarchy

/20

8/20

WCAG

/25

13/25

2.44:1 min contrast

Performance

/25

16/25

1 font · 238 req

Heading Font

__Zen_Kaku_Gothic_New_49e4ed

Sans

Body Font

__Zen_Kaku_Gothic_New_49e4ed

Sans13px

Contrast Ratio

2.44:1

14 issues

Reading Comfort

Single Font Family

left aligned

30px

18px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

✅ Easy to read: Flesch score 82/100 — accessible to general audiences.

⚠️ Partial contrast: 14 elements below WCAG AA threshold (min 2.4:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 82

Color Palette

12 unique colors

11.53:1 AAA Light

#ffffff

Background· 38.6%

#393843

Secondary· 6%

#367a93

Primary· 11.1%

#0b0909

Text· 7.4%

#b29177

Secondary· 5.9%

#60483c

Secondary· 5.5%

#1d232c

Secondary· 5.3%

#ddd0c6

Secondary· 3.6%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)googletagmanager.com(4)pagead2.googlesyndication.com(2)google-analytics.com(1)

Website Identity