What technology does tenki.jp use?

tenki.jp is built with jQuery, Google Analytics, Google Ads, Meta Pixel, TikTok Pixel, Nginx.

Is tenki.jp secure (HTTPS)?

Yes. tenki.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Feb 10, 2027.

tenki.jp is hosted on AWS, behind CloudFront CDN.

What is tenki.jp's SEO score?

tenki.jp scored 90/100 for SEO in the latest analysis (excellent).

What is tenki.jp's overall website score?

tenki.jp has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.

tenki.jp

日本気象協会 tenki.jp / 全国の天気予報・地震・台風

Last scanned Jul 24, 2026, 6:17 PM · 2 views

Overall score

Excellent

Summary

日本気象協会公式の天気予報専門メディアです。市区町村別のピンポイントな天気予報に加え、専門的な気象情報、地震・津波などの防災情報を提供します。気象�… This website uses Nginx hosted on AWS behind CloudFront CDN. SEO is excellent (90/100) and accessibility is excellent (95/100). Security scores excellent (90/100) and performance good (85/100). Top issue: Title longer than 60 characters.

日本気象協会公式の天気予報専門メディアです。市区町村別のピンポイントな天気予報に加え、専門的な気象情報、地震・津波などの防災情報を提供します。気象予報士が日々更新する日直予報士、花粉や熱中症、スキー積雪などの季節特集も人気です。

United States

Hosted on AWS

Top issues to fix

6 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
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.
1 broken link on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

2 issue(s) found

Performance

270 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

X (Twitter)YouTube Instagram X (Twitter)Facebook

Meta tags

Title: 日本気象協会 tenki.jp / 全国の天気予報・地震・台風
Description: 日本気象協会公式の天気予報専門メディアです。市区町村別のピンポイントな天気予報に加え、専門的な気象情報、地震・津波などの防災情報を提供します。気象予報士が日々更新する日直予報士、花粉や熱中症、スキー積雪などの季節特集も人気です。
Canonical: https://tenki.jp/
Language: ja
Charset: UTF-8
Viewport
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

jQuery Google Analytics Google Ads Meta Pixel TikTok Pixel Nginx

Hosting & CDN

Hosting provider: AWS
CDN provider: CloudFront
IP address: 18.66.41.12
ASN: AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

Type	Value
A	18.66.41.12 18.66.41.74 18.66.41.80 18.66.41.15
AAAA	—
MX	silverzebra7.sakura.ne.jp
TXT	globalsign-domain-verification=82A685CCD79732D4EA6A86A47807AF7D google-site-verification=ldovc8JtIs-HjvFTp3XtiS2jYJ4RajXWeOaJ6uT3ikU v=spf1 include:silverzebra7.sakura.ne.jp ~all
NS	ns-1374.awsdns-43.org ns-1996.awsdns-57.co.uk ns-209.awsdns-26.com ns-966.awsdns-56.net
CAA	0 issuewild "globalsign.com" 0 issue "digicert.com;cansignhttpexchanges=yes" 0 issue "globalsign.com" 0 issue "amazon.com" 0 issuewild "amazon.com" 0 issue "letsencrypt.org"
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Amazon
Subject: *.tenki.jp
Valid from: Jan 12, 2026
Valid to: Feb 10, 2027
Days until expiry: 201
SAN domains: *.tenki.jp, tenki.jp

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 10

Links

170 internal · 17 external · 1 broken

Images

65 total · 3 missing alt

Scripts / Styles

83 scripts · 1 stylesheets

JS / CSS size

1.2 MB · 181 KB

Page size

179 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 18
sitemap.xml: Found
URLs in sitemap: 1000

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters

Scan details

Requested URL: https://tenki.jp
Final URL: https://tenki.jp
HTTP status: 200
HTTP version: HTTP/2
Response time: 267 ms
HTML size: 179 KB
Redirect chain: https://tenki.jp

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Frequently asked questions

What technology does tenki.jp use?: tenki.jp is built with jQuery, Google Analytics, Google Ads, Meta Pixel, TikTok Pixel, Nginx.
Is tenki.jp secure (HTTPS)?: Yes. tenki.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Feb 10, 2027.
Who hosts tenki.jp?: tenki.jp is hosted on AWS, behind CloudFront CDN.
What is tenki.jp's SEO score?: tenki.jp scored 90/100 for SEO in the latest analysis (excellent).
What is tenki.jp's overall website score?: tenki.jp has an overall SiteGraph score of 90/100, combining SEO, performance, security, and accessibility.