corocoro.jp

https://corocoro.jp· First analyzed 19 May 2026· Updated 19 May 2026

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corocoro.jp

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.32

Site Location

🇯🇵 Japanvia tld

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Nameservers

ns-1329.awsdns-38.org.ns-156.awsdns-19.com.ns-1762.awsdns-28.co.uk.ns-832.awsdns-40.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.9 MB

169 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

CMS

WordPress

Infrastructure

Hosting

Amazon Web Services (AWS)

Progressive Web App

Web Manifest

Technology Stack

8 Technologies Detected

Analytics

Meta Frameworks

CSS Frameworks

Tag Managers

Advertising

Plugins

SEO Analysis

D54/100

Meta Tags5/15

Content5/12

Headings1/8

Technical16/21

E-E-A-T0/7

Images6/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

corocoro.jpcorocoro.jp

週刊コロコロコミック

無料で読める漫画がたくさん！コロコロ編集部が運営する総合エンタメサイト！

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length36 chars

Recommended: 120-160 chars

Issues (1)

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

7 issues found

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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

F36/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

1/25

Citation

11/25

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:3%

Words:293

Token eff.:Too Short

Sections/1K:3.4

Depth:2/5

Structured Data

Microdata

WebSite(min)microdata

Citation Readiness

Opening Summary14w

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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

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

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

4/15

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

5 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.

42/100

404 mg

CO₂e / view

3.9 MB

Page Weight

15%

Cleaner Than

New Visitor

462 mg

Returning (cached)

231 mg

Annual (10K/mo)

48.5 kg

Emission Segments

Data Center

20 mg

Network

119 mg

Device

266 mg

Resource Breakdown

JavaScript

418.2 KB

Images

1.1 MB

CSS

2.3 MB

Fonts

60.0 KB

HTML

6.3 KB

Other

29.1 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

37d

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

Valid From

27.03.2026

Valid Until

25.06.2026

Subject Alternative Names (2)

*.www.corocoro.jpwww.corocoro.jp

SHA-256 Fingerprint

CF:D1:D9:AB:16:6A:67:7F:4A:3E:43:7F:3A:A6:16:5B:1C:48:0B:EB...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

⚪ Custom(s-maxage=31536000)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 19 May 2026 00:06:11 GMT

etag

"3kuw1rfivep1c"

strict-transport-security

max-age=31536000;

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

corocoro.jp

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

76/100

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

Typography & Readability

Noto Sans

WCAG Partial

55/100

Readability

/30

17/30

11px · LH 1.50

Hierarchy

/20

8/20

WCAG

/25

14/25

1.8:1 min contrast

Performance

/25

16/25

1 font · 43 req

Heading Font

Noto Sans

Sans

Body Font

Noto Sans

Sans11px

Contrast Ratio

1.8:1

18 issues

Reading Comfort

~62 CPL

Optimal (45–75)

18px

11px

❌ Critical: 11px body text is too small. Minimum 14px, recommend 16px+.

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

✅ Optimal line length: ~62 chars/line (ideal 45–75 CPL).

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

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 1.8:1).

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

Buy on MyFontsFlesch 100

Color Palette

13 unique colors

3.55:1 AA Large Dark

#777777

Other· 27.7%

#252123

Other· 8.2%

#fffff4

Primary· 14.200000000000001%

#4e433f

Text· 8.1%

#736357

Secondary· 5.4%

#140f11

Secondary· 4.9%

#d9ce8d

Secondary· 4.7%

#35444d

Secondary· 4.5%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)googletagmanager.com(4)connect.facebook.net(2)in.treasuredata.com(1)sync.im-apps.net(1)

Website Identity

corocoro.jp

Location detected: 🇯🇵 Japanvia tld

Social Profiles

X (Twitter)YouTube

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Last analyzed: 19 May 2026 at 00:06

Historical Analysis & Change Tracking