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bnn.co.jp

https://bnn.co.jp· First analyzed 24 May 2026· Updated 24 May 2026
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bnn.co.jp
Desktop screenshot of bnn.co.jp
Mobile screenshot of bnn.co.jp
Mobile

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Hosting Provider

Shopify
shopify.com

IP Address

23.227.38.65

Site Location

🇯🇵 Japanvia tld

Server Location

🇨🇦 Ottawa, Canada

ASN

AS13335

Organization

Shopify, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns017-i8osc92sd7ujhvng.i.d-53.info.ns017-i8osc92sd7ujhvng.i.d-53.jp.ns017-i8osc92sd7ujhvng.i.d-53.net.

Performance

96

Core Web Vitals

Weight

First Contentful Paint
1.0 s10%
Speed Index
1.4 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
8 MB
225 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Shopify
ecommerce
BNN Shopify Theme
Shopify Theme

Detected Apps

Facebook ChannelInstagram Shopping

Technology Stack

10 Technologies Detected

Analytics

4
Google Analytics
Google Analytics 4
Facebook PixelFullStory

Frameworks

1
Alpine.js

CSS Frameworks

1
Tailwind CSS

Fonts

1
Adobe Fonts (Typekit)

CDN

1
Cloudflare

Customer Support

1
Zendesk

Security

1
reCAPTCHA

SEO Analysis

D56/100
15
9
1
Meta Tags7/15
Content7/12
Headings3/8
Technical18/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
B
bnn.co.jpbnn.co.jp

BNN, Inc. | 株式会社ビー・エヌ・エヌ

株式会社ビー・エヌ・エヌは2002年に設立した出版社です。デザインする人を増やすこと、作る人を支援することを目指して出版活動を展開しています。

Title Length24 chars

Recommended: 50-60 chars (~140px / 580px)

Description Length71 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

88 rules

Sitemap reference found

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

D42/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
0/25
Citation
13/25

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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
Text ratio:1%
Words:134
Token eff.:Too Short
Sections/1K:59.7

Structured Data

No Schema

Citation Readiness

Opening Summary58w
Descriptive Headingsavg 1w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
D
58/100
7
Passed
4
Critical
1
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
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
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
42/100
F
830 mg
CO₂e / view
8.0 MB
Page Weight
5%
Cleaner Than
New Visitor
949 mg
vs
Returning (cached)
474 mg
Annual (10K/mo)
99.6 kg
Emission Segments
Data Center
41 mg
Network
244 mg
Device
546 mg
Resource Breakdown
JavaScript
1.4 MB
Images
6.3 MB
CSS
88.5 KB
HTML
25.2 KB
Other
244.8 KB
Green Hosting Verified
Cloudflare
GWF Verified
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

81%Very Good
Interactive

HTTPS

WAF

52d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

16.04.2026

Valid Until

15.07.2026

Subject Alternative Names (1)

bnn.co.jp

SHA-256 Fingerprint

EE:80:92:5C:8E:A9:EC:B0:20:69:3A:1D:74:9D:D8:A1:74:49:8E:DB...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-ray🇮🇹 Milan
a00a09424e48d7df-MXP
content-encoding
⚡ Brotli(br)
content-language
ja-JP
content-length
25468
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

bnn-co-jp.mail.protection.outlook.com

Domain Information

bnn.co.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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.
C
64/100
Mobile Friendly2 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

dnp-shuei-gothic-gin-std

WCAG AAA
66/100
Readability
/30
15/30

16px · LH 1.00

Hierarchy
/20
8/20
WCAG
/25
23/25

15.54:1 min contrast

Performance
/25
20/25

1 font · 1 req

Heading Font

dnp-shuei-gothic-gin-std

Sans

Body Font

dnp-shuei-gothic-gin-std

Sans16px

Contrast Ratio

15.54:1

WCAG AAA (≥7:1)

Reading Comfort

~91 CPL

Wide lines
18px
h2
16px
h3
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

⚠️ Wide lines: ~91 chars/line. Use max-width: 65ch for comfortable reading.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 15.5:1).

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

⚠️ Fluid type without rem: clamp() detected but missing rem units. May fail WCAG 1.4.4 zoom test.

AAdobe FontsBuy on MyFontsFluid Type

Color Palette

10 unique colors
15.66:1 AAA Light
#e5e6e8
Text· 31.399999999999995%
#0c0c0c
Text· 7%
#ebd4b3
Primary· 5.8%
#5f4c46
Secondary· 5.5%
#c7ae98
Secondary· 5.4%
#7f9aa2
Secondary· 3.9%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

2

Categories

2

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

20 Resources

18
Scripts
2
Styles
12
Async
4
Defer

Top Script Sources

bnn.co.jp(10)connect.facebook.net(2)cdn.shopify.com(2)use.typekit.net(1)local(1)

Website Identity

bnn.co.jp

Location detected: 🇯🇵 Japanvia tld
📧 Microsoft 365ja

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Last analyzed: 24 May 2026 at 05:53

Historical Analysis & Change Tracking