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discoveryjapan.jp

https://discoveryjapan.jp· First analyzed 22 May 2026· Updated 22 May 2026
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discoveryjapan.jp
Desktop screenshot of discoveryjapan.jp
Mobile screenshot of discoveryjapan.jp
Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

75.2.60.5

Site Location

🇯🇵 Japanvia tld

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Netlify

Nameservers

ns-552.awsdns-05.net.ns-1252.awsdns-28.org.ns-1755.awsdns-27.co.uk.ns-506.awsdns-63.com.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
981 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
931 KB
69 requests

Image Optimization

Lazy LoadWebPAVIFResponsive
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Astro
Infrastructure
Platform
Netlify

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Advertising

1
Twitter Ads

Platforms

1
Netlify

SEO Analysis

B74/100
24
4
1
Meta Tags9/15
Content8/12
Headings8/8
Technical22/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
D
discoveryjapan.jpdiscoveryjapan.jp

ワーナーブラザース・ディスカバリー・ジャパン

ワーナーブラザース・ディスカバリーでは、ディスカバリーチャンネル、アニマルプラネット、カートゥーン ネットワーク、MONDO TV、旅チャンネル、ムービープラス、LaLa TVの7つのチャンネルを運営しています。伝えたい世界のストーリーがここにある。

Title Length22 chars

Recommended: 50-60 chars (~136px / 580px)

Description Length125 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (127/174) — critical for accessibility and SEO

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

1 URLs

1 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

13/100
Poor
4 12 1

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

Sponsored

AI & LLM Readiness

D46/100
Bot Access
20/25
Machine Read.
12/25
Schema Data
3/25
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
Text ratio:1%
Words:706
Token eff.:Optimal

Structured Data

2 JSON-LD
WebSiteBreadcrumbList

Citation Readiness

Opening Summary16w
Descriptive Headings
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
A
82/100
14
Passed
2
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
18/20
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
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
2 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.
68/100
B
94 mg
CO₂e / view
930.6 KB
Page Weight
80%
Cleaner Than
New Visitor
107 mg
vs
Returning (cached)
54 mg
Annual (10K/mo)
11.3 kg
Emission Segments
Data Center
5 mg
Network
28 mg
Device
62 mg
Resource Breakdown
JavaScript
22.6 KB
Images
824.4 KB
CSS
11.1 KB
Fonts
30.4 KB
HTML
42.0 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

36%Critical
Interactive

HTTPS

No WAF

59d

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

22.04.2026

Valid Until

21.07.2026

Subject Alternative Names (2)

discoveryjapan.jpwww.discoveryjapan.jp

SHA-256 Fingerprint

B8:95:8A:76:91:C2:A1:B9:B3:33:C3:B1:D5:17:04:33:3A:0E:13:E1...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
age
7723
cache-control
🟡 0s(public,max-age=0,must-revalidate)
cache-status
"Netlify Edge"; hit
content-encoding
⚡ Brotli(br)
content-length
42724
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

25

SPF
DKIM
DMARC

Domain Information

discoveryjapan.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

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.
B
75/100
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

Typography & Readability

Segoe UI

WCAG Partial
66/100
Readability
/30
22/30

16px · LH 1.80

Hierarchy
/20
12/20

1.33x ratio · ✓ H1→H6

WCAG
/25
16/25

1:1 min contrast

Performance
/25
16/25

System fonts

Heading Font

Segoe UI

Sans21px

Body Font

Segoe UI

Sans16px

Contrast Ratio

1:1

34 issues

Reading Comfort

~50 CPL

Optimal (45–75)
21px
h1
56px
h2
16px
p

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

✅ Optimal line length: ~50 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 34 elements below WCAG AA threshold (min 1.0:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

GGoogle FontsFluid Type (rem)Flesch 67

Color Palette

16 unique colors
3.91:1 AA Large Light
#ffffff
Text· 11.3%
#8c7d81
Other· 7%
#16171b
Primary· 13.1%
#3d3eaa
Secondary· 9.8%
#2a2da8
Accent· 8.6%
#592b5d
Secondary· 8.4%
#0d0b83
Accent· 7.7%
#17189d
Accent· 6.7%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Twitter/X AdsMid-Market

Ad platforms and retargeting pixels

2

Categories

3

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Sponsored

Scripts & Styles

18 Resources

14
Scripts
4
Styles
8
Async
0
Defer

Top Script Sources

local(5)googletagmanager.com(4)s.yimg.jp(2)static.ads-twitter.com(1)google-analytics.com(1)

Website Identity

ワーナーブラザース・ディスカバリー・ジャパン

www.discoveryjapan.jp
Location detected: 🇯🇵 Japanvia tld
ja

Sponsored

Last analyzed: 22 May 2026 at 09:35

Historical Analysis & Change Tracking