hatena.blog

https://hatena.blog· First analyzed 01 May 2026· Updated 01 May 2026

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hatena.blog

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.68.105

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Nginx

CDN

CloudFront

Nameservers

ns-1393.awsdns-46.org.ns-2007.awsdns-58.co.uk.ns-466.awsdns-58.com.ns-733.awsdns-27.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.2 s10%

Speed Index

4.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

55 KB

250 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

AWS CloudFront

CDN

CloudFront

Technology Stack

11 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Google Ads Google AdSense

Libraries

CSS Frameworks

Tag Managers

Customer Support

Web Servers

SEO Analysis

C63/100

Meta Tags5/15

Content11/12

Headings8/8

Technical16/25

E-E-A-T0/7

Images2/7

Links4/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

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Title Length20 chars

Recommended: 50-60 chars (~121px / 580px)

Description Length56 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (284/306) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

5 rules

Local SEO

Local Search Readiness

8/100

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

D43/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

10/25

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

navheader/footer

Text ratio:7%

Words:1,248

Token eff.:Optimal

Sections/1K:32.9

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 1.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

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.

85/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

6/15

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

1 recommendation

•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.

69/100

A+

6 mg

CO₂e / view

54.8 KB

Page Weight

95%

Cleaner Than

New Visitor

6 mg

Returning (cached)

3 mg

Annual (10K/mo)

660 g

Emission Segments

Data Center

<0.001 g

Network

2 mg

Device

4 mg

Resource Breakdown

HTML

54.8 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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A+

Security Score

96%Excellent

Static / Informational

HTTPS

No WAF

238d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

26.11.2025

Valid Until

25.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

hatena.blog

SHA-256 Fingerprint

AF:83:08:19:42:D6:82:D3:B3:D9:D6:32:4A:2A:39:81:64:3D:C0:61...

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HTTP Headers

Developer Console

accept-ranges

bytes

age

581

cache-control

🟣 Private(private)

content-encoding

📦 Gzip(gzip)

content-length

55828

content-security-policy

frame-ancestors 'none'; upgrade-insecure-requests

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

hatena.blog

Domain Age

9y 5m

Created

10.11.2016

Expires

10.11.2026

Last Updated

21.11.2025

Registrar

Automattic Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

61/100

Mobile Friendly

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

79/100

Readability

/30

18/30

14px · LH 1.70

Hierarchy

/20

20/20

2.71x ratio · ✓ H1→H6

WCAG

/25

19/25

4.26:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

-apple-system

Sans38px

Body Font

-apple-system

Sans14px

Contrast Ratio

4.26:1

1 issue

Reading Comfort

~41 CPL

Narrow lines

38px

24px

21px

14px

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

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

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 4.3:1).

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

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 46

Color Palette

7 unique colors

2.12:1 Fail Light

#ffffff

Background· 62.1%

#afb3b2

Other· 5.7%

#d5e5f4

Primary· 15.9%

#dfdfd6

Secondary· 5%

#5c6d80

Secondary· 4.3%

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.blog.st-hatena.com(3)connect.facebook.net(2)googletagmanager.com(2)platform.twitter.com(2)securepubads.g.doubleclick.net(2)

Website Identity

hatena.blog

9 years old

Location detected: 🇫🇮 Finlandvia ip

Automattic Inc.ja

Social Profiles

Facebook X (Twitter)

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Last analyzed: 01 May 2026 at 03:19

Historical Analysis & Change Tracking