Back to Search
interfm.co.jp favicon

interfm.co.jp

https://interfm.co.jp· First analyzed 03 May 2026· Updated 03 May 2026
Export
interfm.co.jp
Desktop screenshot of interfm.co.jp
Mobile screenshot of interfm.co.jp
Mobile

Sponsored

Hosting Provider

SAKURA Internet Inc.

IP Address

153.126.191.70

Site Location

🇯🇵 Japanvia tld

Server Location

🇯🇵 Osaka, Japan

ASN

AS7684

Organization

SAKURA Internet Inc.

Server

Nginx

Nameservers

01.dnsv.jp.02.dnsv.jp.03.dnsv.jp.04.dnsv.jp.

Performance

95

Core Web Vitals

Weight

First Contentful Paint
1.1 s10%
Speed Index
1.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4.9 MB
107 requests

Image Optimization

WebP
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
SAKURA Internet Inc.

Technology Stack

7 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Other

1
Lottie

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Advertising

1
Google Ads

Web Servers

1
Nginxv1.14.0

SEO Analysis

D59/100
18
7
2
Meta Tags11/15
Content8/12
Headings3/8
Technical13/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness2/4
Mobile1/4
Indexability3/3
I
interfm.co.jpinterfm.co.jp

interfm | インターエフエム [ 89.7MHz TOKYO ]

音楽をはじめ多様なカルチャーに寄り添う。在日外国語圏の人々などマイノリティと共に歩む。編成方針 Diversity＆Inclutionを表現するメッセージとして2022年4月1日よりFind Your Colorsを新たなステートメントとし、生活を豊かにする「情報、知恵」と、心を豊かにする「音楽」と出会えるステー...

Description truncated.
Title Length36 chars

Recommended: 50-60 chars (~227px / 580px)

Description Length167 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (26/37) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

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

D40/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
13/25

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
nav
Text ratio:1%
Words:221
Token eff.:Too Short
Sections/1K:13.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary17w
Descriptive Headingsavg 2.3w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (7)
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
85/100
14
Passed
2
Critical
2
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
11/15
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.
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.
16/100
F
619 mg
CO₂e / view
4.9 MB
Page Weight
15%
Cleaner Than
New Visitor
708 mg
vs
Returning (cached)
354 mg
Annual (10K/mo)
74.3 kg
Emission Segments
Data Center
138 mg
Network
149 mg
Device
332 mg
Resource Breakdown
JavaScript
671.5 KB
Images
3.5 MB
CSS
595.8 KB
HTML
9.2 KB
Other
111.2 KB
Green Hosting Not Verified
SAKURA Internet Inc.
9 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

150d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Japan Registry Services Co., Ltd.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

09.04.2026

Valid Until

30.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.interfm.co.jp

SHA-256 Fingerprint

29:1E:38:8E:98:DC:73:0E:26:3F:CB:6C:1D:92:24:B4:DB:C4:A3:16...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

connection
keep-alive
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Sun, 03 May 2026 04:21:53 GMT
server
nginx/1.14.0 (Ubuntu)
transfer-encoding
chunked
Good Warning Issue

Email Infrastructure

Google Workspace

Score

45

SPF
DKIM
DMARC

MX Records (6)

alt4.aspmx.l.google.com
alt2.aspmx.l.google.com
alt3.aspmx.l.google.com
mail01.interfm.co.jp

+2 more

Domain Information

interfm.co.jp

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

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.
D
57/100
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
62/100
Readability
/30
16/30

16px · LH 1.00

Hierarchy
/20
11/20

1x ratio · ✓ H1→H6

WCAG
/25
13/25

1:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

-apple-system

Sans16px

Body Font

-apple-system

Sans16px

Contrast Ratio

1:1

13 issues

Reading Comfort

Single Font Family

left aligned
16px
h1
42px
h2
14px
h3
14px
h4
16px
p
Perfect Fourth
Scale

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

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 13 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.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Color Palette

14 unique colors
Dark
#000000
Text· 9.7%
#fffffe
Background· 20%
#72a203
Accent· 12.4%
#59a10d
Accent· 11.7%
#7fcd63
Accent· 10.4%
#e7e8dc
Secondary· 7.8%
#a8c482
Secondary· 4.6%
#52af55
Primary· 4.5%

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

Ad Networks

Google Ad ManagerPrebid.js

Sponsored

Scripts & Styles

17 Resources

14
Scripts
3
Styles
10
Async
0
Defer

Top Script Sources

googletagmanager.com(3)cse.google.com(2)securepubads.g.doubleclick.net(2)anymind360.com(2)script.4dex.io(1)

Website Identity

interfm.co.jp

Location detected: 🇯🇵 Japanvia tld
📧 Google Workspaceja

Sponsored

Last analyzed: 03 May 2026 at 04:22

Historical Analysis & Change Tracking

interfm.co.jp Technology Stack - Built With Lottie, Tailwind CSS, Google Analytics, Google Analytics 4, Google Tag Manager | StackOptic | StackOptic