bitcointalk.jp

https://bitcointalk.jp· First analyzed 15 May 2026· Updated 15 May 2026

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bitcointalk.jp

Mobile

Sponsored

Hosting Provider

SAKURA

IP Address

219.94.162.26

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS9371

Organization

SAKURA

Server

Nginx

Nameservers

ns2.dns.ne.jp.ns1.dns.ne.jp.

Performance

Core Web Vitals

Weight

First Contentful Paint

6.0 s10%

Speed Index

7.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

227 KB

14 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

SAKURA

Technology Stack

8 Technologies Detected

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Web Servers

Languages

SEO Analysis

F31/100

Meta Tags7/15

Content0/12

Headings0/8

Technical12/25

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

bitcointalk.jpbitcointalk.jp

Bitcoin Talk Japan

Bitcoin Talk Japan は、日本最大級のICOやビットコインに関するQAサイト。気軽に質問して、ICOプロジェクトのお悩み解決。

Title Length18 chars

Recommended: 50-60 chars (~105px / 580px)

Description Length71 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (16 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

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

F23/100

Bot Access

20/25

Machine Read.

1/25

Schema Data

0/25

Citation

2/25

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

Text ratio:5%

Words:13

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

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.

2 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.

53/100

A+

28 mg

CO₂e / view

227.3 KB

Page Weight

95%

Cleaner Than

New Visitor

32 mg

Returning (cached)

16 mg

Annual (10K/mo)

3.4 kg

Emission Segments

Data Center

6 mg

Network

7 mg

Device

15 mg

Resource Breakdown

JavaScript

111.9 KB

CSS

111.7 KB

Fonts

2.1 KB

HTML

1.5 KB

Green Hosting Not Verified

SAKURA

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

76d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

02.05.2026

Valid Until

31.07.2026

Subject Alternative Names (2)

bitcointalk.jpwww.bitcointalk.jp

SHA-256 Fingerprint

25:E7:FD:81:BE:22:D5:9D:CE:23:1A:87:AA:44:EF:E1:A3:E3:2F:90...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 15 May 2026 17:48:41 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

bitcointalk.jp

Domain Information

bitcointalk.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

59/100

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Open Sans

60/100

Readability

/30

20/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

19/25

Performance

/25

13/25

1 font · 1 req

Heading Font

Open Sans

Body Font

Open Sans

Sans14px

Contrast Ratio

Reading Comfort

Single Family

left aligned

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

GGoogle Fonts

Color Palette

5 unique colors

3.84:1 AA Large Light

#ffffff

Background· 98.89999999999999%

#828282

Other· 0.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

.(3)googletagmanager.com(2)google-analytics.com(1)maxcdn.bootstrapcdn.com(1)

Website Identity

bitcointalk.jp

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 15 May 2026 at 17:49

Historical Analysis & Change Tracking