What technology does radiko.jp use?

radiko.jp is built with jQuery, Nginx.

Is radiko.jp secure (HTTPS)?

Yes. radiko.jp uses TLS 1.2 with a certificate issued by Sectigo Limited, valid until Dec 9, 2026.

Hosting provider information for radiko.jp is not available yet.

What is radiko.jp's SEO score?

radiko.jp scored 55/100 for SEO in the latest analysis (fair).

What is radiko.jp's overall website score?

radiko.jp has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.

Has radiko.jp's score changed over time?

radiko.jp's overall score has stayed steady at 78/100 since Jul 26, 2026.

radiko.jp

radiko(ラジコ) | インターネット・スマホアプリで聴けるラジオ

Last scanned Aug 2, 2026, 7:00 AM · 7 views

Overall score

Fair

Summary

radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラ�… This website uses Nginx. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラジオが聴き放題のラジコプレミアムも！AM・FMラジオ対応

Top issues to fix

11 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.

+5 more issues — details in the sections below.

SEO

7 issue(s) found

100

Performance

283 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

0 overall since Jul 26, 2026

Overall: 78
SEO: 55
Security: 75
Performance: 100
Accessibility: 90

Organization

Company details published in this site's own structured data.

Meta tags

Title: radiko(ラジコ) | インターネット・スマホアプリで聴けるラジオ
Description: radiko(ラジコ)はスマートフォンやアプリ・パソコンでラジオが聴ける無料のサービスです。1週間以内に放送された番組が聴けるタイムフリー聴取機能や、全国のラジオが聴き放題のラジコプレミアムも！AM・FMラジオ対応
Canonical
Language: ja
Charset: UTF-8
Viewport: width=device-width,initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

jQuery Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: Sectigo Limited
Subject: radiko.jp
Valid from: May 25, 2026
Valid to: Dec 9, 2026
Days until expiry: 129
SAN domains: radiko.jp, www.radiko.jp

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

1 internal · 1 external · 2 broken

Images

0 total · 0 missing alt

Scripts / Styles

80 scripts · 10 stylesheets

JS / CSS size

3.5 KB · 0 B

Page size

15.4 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://radiko.jp
Final URL: https://radiko.jp
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 283 ms
HTML size: 15.4 KB
Redirect chain: https://radiko.jp

See something wrong on this report? Request a correction

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