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mainichi.jp

毎日新聞デジタル | 毎日新聞のニュースサイト

Last scanned Jul 29, 2026, 4:00 PM · 11 views

85

Overall score

Great

Summary

毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画、英語版（The Mainichi）を掲載しています。. This website uses Apache behind CloudFront CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画、英語版（The Mainichi）を掲載しています。

Top issues to fix

10 issues found · 2 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.

  • 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.

  • 2 cookies 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.

+4 more issues — details in the sections below.

80

SEO

4 issue(s) found

100

Performance

960 ms

65

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

+4 overall since Jul 21, 2026

Overall
85
SEO
80
Security
65
Performance
100
Accessibility
100

Organization

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

毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画、英語版（The Mainichi）を掲載しています。

X (Twitter)Facebook

Meta tags

Title
毎日新聞デジタル | 毎日新聞のニュースサイト
Description
毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画、英語版（The Mainichi）を掲載しています。
Canonical
https://mainichi.jp
Language
ja
Charset
UTF-8
Viewport
width=1280,user-scalable=yes
Robots meta
noarchive
Manifest
https://cdn.webpush.jp/pwa/10001413/2fef44c6-34cb-475e-acf6-b2b1c0d4fbe5/manifest.json

OpenGraph & Twitter Card

OpenGraph

og:title
毎日新聞デジタル | 毎日新聞のニュースサイト
og:description
毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画を掲載しています。
og:type
website
og:url
https://mainichi.jp

Twitter Card

twitter:card
summary_large_image
twitter:title
ニュースサイト
twitter:description
毎日新聞デジタルは毎日新聞のニュースサイト。政治、経済、国際、事件、話題、スポーツなどの速報、写真、動画を掲載しています。

Technologies

Detected frameworks, languages, and tools.

jQueryApache

Hosting & CDN

Hosting provider
—
CDN provider
CloudFront
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Cybertrust Japan Co., Ltd.
Subject
*.mainichi.jp
Valid from
Jan 27, 2026
Valid to
Feb 26, 2027
Days until expiry
211
SAN domains
*.mainichi.jp, mainichi.jp

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 30 · H3 189

Links

353 internal · 36 external · 20 broken

Images

169 total · 0 missing alt

Scripts / Styles

31 scripts · 8 stylesheets

JS / CSS size

6.7 KB · 379 B

Page size

226 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
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://mainichi.jp
Final URL
https://mainichi.jp
HTTP status
200
HTTP version
HTTP/2
Response time
956 ms
HTML size
226 KB
Redirect chain
https://mainichi.jp

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does mainichi.jp use?
mainichi.jp is built with jQuery, Apache.
Is mainichi.jp secure (HTTPS)?
Yes. mainichi.jp uses TLS 1.3 with a certificate issued by Cybertrust Japan Co., Ltd., valid until Feb 26, 2027.
Who hosts mainichi.jp?
Hosting provider information for mainichi.jp is not available yet.
What is mainichi.jp's SEO score?
mainichi.jp scored 80/100 for SEO in the latest analysis (great).
What is mainichi.jp's overall website score?
mainichi.jp has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
Has mainichi.jp's score changed over time?
mainichi.jp's overall score has improved by 4 points (from 81 to 85) since Jul 21, 2026.