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iknow.jp

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

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

35.75.93.214

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Nameservers

ns-588.awsdns-09.net.ns-1414.awsdns-48.org.ns-1721.awsdns-23.co.uk.ns-380.awsdns-47.com.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.2 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
578 KB
47 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Amazon Web Services (AWS)

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Fonts

1
Adobe Fonts (Typekit)

Tag Managers

1
Google Tag Manager

SEO Analysis

C67/100
20
7
1
Meta Tags8/15
Content9/12
Headings8/8
Technical16/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
I
iknow.jpiknow.jp

iKnow! by DMM Eikaiwa - Learn faster and remember longer - iKnow! -...

Learn faster and remember longer with iKnow! by DMM Eikaiwa Learn Chinese, Japanese, English, and more.

Title truncated.
Title Length74 chars

Recommended: 50-60 chars (~461px / 580px)

Description Length103 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (74 chars, ~461px). Will be truncated in search results.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

605 URLs

robots.txt

16 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100
Poor
2 15 2

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

Sponsored

AI & LLM Readiness

D49/100
Bot Access
20/25
Machine Read.
14/25
Schema Data
0/25
Citation
15/25

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
blockquotesnavheader/footer
Text ratio:3%
Words:437
Token eff.:Optimal
Sections/1K:18.3
Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary29w
Descriptive Headingsavg 4.9w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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
80/100
11
Passed
2
Critical
0
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
1/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
1 recommendation
  • •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.
65/100
A
58 mg
CO₂e / view
577.7 KB
Page Weight
80%
Cleaner Than
New Visitor
67 mg
vs
Returning (cached)
33 mg
Annual (10K/mo)
7.0 kg
Emission Segments
Data Center
3 mg
Network
17 mg
Device
38 mg
Resource Breakdown
JavaScript
6.9 KB
Images
531.5 KB
CSS
19.3 KB
HTML
20.1 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

No WAF

44d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

08.04.2026

Valid Until

07.07.2026

Subject Alternative Names (3)

en.iknow.jpiknow.jpja.iknow.jp

SHA-256 Fingerprint

5E:48:39:B6:A7:0B:82:9B:D9:5D:79:12:D3:5C:AA:79:21:EB:C8:76...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 0s(max-age=0, private, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=utf-8
date
Sun, 24 May 2026 05:58:33 GMT
etag
W/"a084b54c15f2a4f8dcdf1b5194b30cfa"
referrer-policy
strict-origin-when-cross-origin
Good Warning Issue

Email Infrastructure

Google Workspace

Score

70

SPF
DKIM
DMARC

MX Records (7)

aspmx2.googlemail.com
aspmx.l.google.com
aspmx3.googlemail.com
alt2.aspmx.l.google.com

+3 more

Domain Information

iknow.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
66/100
Mobile Friendly23 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Helvetica Neue

WCAG Partial
79/100
Readability
/30
24/30

17px · LH 1.60

Hierarchy
/20
17/20

2.24x ratio · ✓ H1→H6

WCAG
/25
16/25

2.02:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

Helvetica Neue

Sans38px

Body Font

Helvetica Neue

Sans17px

Contrast Ratio

2.02:1

12 issues

Reading Comfort

~39 CPL

Narrow lines
38px
h1
32px
h2
20px
h3
17px
p

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 12 elements below WCAG AA threshold (min 2.0:1).

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

✅ Strong hierarchy: Headlines are 2.2x larger than body text.

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

AAdobe Fonts

Color Palette

9 unique colors
Light
#ffffff
Text· 22.6%
#3f6dcf
Accent· 50.00000000000001%
#0377ce
Accent· 9.5%
#a5c8e1
Secondary· 6.4%
#d6ebff
Accent· 4.4%
#888ca3
Secondary· 3.7%
#1a80db
Primary· 1.7%
#3a61b4
Accent· 1.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

10 Resources

8
Scripts
2
Styles
4
Async
0
Defer

Top Script Sources

googletagmanager.com(3)unpkg.com(1)assets0.iknow.jp(1)assets2.iknow.jp(1)ssl.google-analytics.com(1)

Website Identity

iknow.jp

Location detected: 🇯🇵 Japanvia tld
📧 Google Workspaceen

Social Profiles

FacebookX (Twitter)

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Last analyzed: 24 May 2026 at 05:59

Historical Analysis & Change Tracking