What technology does j-wave.co.jp use?

j-wave.co.jp is built with jQuery, Google Analytics, Meta Pixel.

Is j-wave.co.jp secure (HTTPS)?

Yes. j-wave.co.jp uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Aug 18, 2026.

Who hosts j-wave.co.jp?

Hosting provider information for j-wave.co.jp is not available yet.

What is j-wave.co.jp's SEO score?

j-wave.co.jp scored 95/100 for SEO in the latest analysis (excellent).

What is j-wave.co.jp's overall website score?

j-wave.co.jp has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.

Has j-wave.co.jp's score changed over time?

j-wave.co.jp's overall score has declined by 5 points (from 83 to 78) since Jul 26, 2026.

j-wave.co.jp

J-WAVE 81.3 FM RADIO

Last scanned Aug 3, 2026, 7:00 PM · 4 views

Overall score

Fair

Summary

FMラジオ局 J-WAVE 周波数は81.3MHz(東京スカイツリー)、88.3MHz(六本木中継局)。オンエアした楽曲の検索や放送内容、ポッドキャストなど情報満載！radiko(ラジコ)でもラ�… This website uses Google Analytics behind CloudFront CDN. SEO is excellent (95/100) and accessibility is excellent (90/100). Security scores fair (50/100) and performance good (75/100). Top issue: Meta description longer than 160 characters.

FMラジオ局 J-WAVE 周波数は81.3MHz(東京スカイツリー)、88.3MHz(六本木中継局)。オンエアした楽曲の検索や放送内容、ポッドキャストなど情報満載！radiko(ラジコ)でもラジオがお楽しみいただけます。

Top issues to fix

8 issues found · 3 high priority

TLS certificate expires in 14 days
Security
Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.
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.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.

+2 more issues — details in the sections below.

SEO

1 issue(s) found

Performance

135 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

-5 overall since Jul 26, 2026

Overall: 78
SEO: 95
Security: 50
Performance: 75
Accessibility: 90

Organization

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

Facebook X (Twitter)Instagram YouTube

Meta tags

Title: J-WAVE 81.3 FM RADIO
Description: FMラジオ局 J-WAVE 周波数は81.3MHz(東京スカイツリー)、88.3MHz(六本木中継局)。オンエアした楽曲の検索や放送内容、ポッドキャストなど情報満載！radiko(ラジコ)でもラジオがお楽しみいただけます。
Canonical: https://www.j-wave.co.jp
Language
Charset: utf-8
Viewport: width=device-width,initial-scale=1.0,shrink-to-fit=no
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

jQuery Google Analytics Meta Pixel

Hosting & CDN

Hosting provider: —
CDN provider: CloudFront
IP address: 108.158.61.122
ASN: —

DNS records

Type	Value
A	108.158.61.122 108.158.61.97 108.158.61.111 108.158.61.112
AAAA	2600:9000:237b:d600:14:d62f:5280:93a1 2600:9000:237b:8e00:14:d62f:5280:93a1 2600:9000:237b:ea00:14:d62f:5280:93a1 2600:9000:237b:7400:14:d62f:5280:93a1 2600:9000:237b:b400:14:d62f:5280:93a1 2600:9000:237b:d000:14:d62f:5280:93a1 2600:9000:237b:be00:14:d62f:5280:93a1 2600:9000:237b:9c00:14:d62f:5280:93a1
MX	—
TXT	—
NS	ns-1787.awsdns-31.co.uk ns-1015.awsdns-62.net ns-243.awsdns-30.com ns-1084.awsdns-07.org
CAA	—
CNAME	d24gxegs71cgui.cloudfront.net
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: GlobalSign nv-sa
Subject: www.j-wave.co.jp
Valid from: Jul 17, 2025
Valid to: Aug 18, 2026
Days until expiry: 14
SAN domains: www.j-wave.co.jp, j-wave.co.jp

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 15

Links

67 internal · 42 external · 1 broken

Images

66 total · 0 missing alt

Scripts / Styles

44 scripts · 8 stylesheets

JS / CSS size

1.6 MB · 333 KB

Page size

63.5 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 60
sitemap.xml: Found
URLs in sitemap: 216

SEO issues

Meta description longer than 160 characters

Scan details

Requested URL: https://j-wave.co.jp
Final URL: https://www.j-wave.co.jp/
HTTP status: 200
HTTP version: HTTP/2
Response time: 134 ms
HTML size: 63.5 KB
Redirect chain: https://j-wave.co.jp → https://www.j-wave.co.jp/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does j-wave.co.jp use?: j-wave.co.jp is built with jQuery, Google Analytics, Meta Pixel.
Is j-wave.co.jp secure (HTTPS)?: Yes. j-wave.co.jp uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Aug 18, 2026.
Who hosts j-wave.co.jp?: Hosting provider information for j-wave.co.jp is not available yet.
What is j-wave.co.jp's SEO score?: j-wave.co.jp scored 95/100 for SEO in the latest analysis (excellent).
What is j-wave.co.jp's overall website score?: j-wave.co.jp has an overall SiteGraph score of 78/100, combining SEO, performance, security, and accessibility.
Has j-wave.co.jp's score changed over time?: j-wave.co.jp's overall score has declined by 5 points (from 83 to 78) since Jul 26, 2026.