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dnp.co.jp

DNP 大日本印刷株式会社

Last scanned Jul 26, 2026, 11:49 AM

93

Overall score

Excellent

Summary

印刷・情報技術を基盤に、雑誌や書籍から包装、建材、エレクトロニクス、エネルギー分野、ライフサイエンス分野にも進出。国内外の社会や生活者のさまざまな�… This website uses Apache hosted on AKAMAI-ASN1 - Akamai International B.V., NL. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

印刷・情報技術を基盤に、雑誌や書籍から包装、建材、エレクトロニクス、エネルギー分野、ライフサイエンス分野にも進出。国内外の社会や生活者のさまざまな課題を解決して「未来のあたりまえ」を作り出し、豊かな生活と社会に貢献していきます。

United States
Hosted on AKAMAI-ASN1 - Akamai International B.V., NL

Top issues to fix

3 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

85

SEO

2 issue(s) found

100

Performance

332 ms

90

Security

HTTPS & header checks

100

Accessibility

0 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.

印刷・情報技術を基盤に、雑誌や書籍から包装、建材、エレクトロニクス、エネルギー分野、ライフサイエンス分野にも進出。国内外の社会や生活者のさまざまな課題を解決して「未来のあたりまえ」を作り出し、豊かな生活と社会に貢献していきます。

FacebookYouTube

Contact

Email, phone, and address published on this site's own pages.

Source: https://www.dnp.co.jp/corporate/location/

Meta tags

Title
DNP 大日本印刷株式会社
Description
印刷・情報技術を基盤に、雑誌や書籍から包装、建材、エレクトロニクス、エネルギー分野、ライフサイエンス分野にも進出。国内外の社会や生活者のさまざまな課題を解決して「未来のあたりまえ」を作り出し、豊かな生活と社会に貢献していきます。
Canonical
https://www.dnp.co.jp/index.html
Language
ja
Charset
UTF-8
Viewport
width=device-width,initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
DNP 大日本印刷株式会社
og:description
印刷・情報技術を基盤に、雑誌や書籍から包装、建材、エレクトロニクス、エネルギー分野、ライフサイエンス分野にも進出。国内外の社会や生活者のさまざまな課題を解決して「未来のあたりまえ」を作り出し、豊かな生活と社会に貢献していきます。
og:type
website
og:url
https://www.dnp.co.jp/index.html

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQueryApache

Hosting & CDN

CDN provider
—
IP address
23.55.244.170
ASN
AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL)

DNS records

TypeValue
A
  • 23.55.244.170
  • 23.55.244.162
AAAA—
MX—
TXT—
NS—
CAA—
CNAME
  • www.dnp.co.jp.edgekey.net
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Cybertrust Japan Co., Ltd.
Subject
*.dnp.co.jp
Valid from
Nov 28, 2025
Valid to
Dec 27, 2026
Days until expiry
151
SAN domains
*.dnp.co.jp, dnp.co.jp

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 8 · H3 4

Links

74 internal · 18 external · 0 broken

Images

21 total · 0 missing alt

Scripts / Styles

15 scripts · 7 stylesheets

JS / CSS size

827 KB · 0 B

Page size

62.5 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Meta description longer than 160 characters
  • No structured data (JSON-LD) found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://dnp.co.jp
Final URL
https://www.dnp.co.jp/
HTTP status
200
HTTP version
HTTP/2
Response time
331 ms
HTML size
62.5 KB
Redirect chain
https://dnp.co.jp → https://www.dnp.co.jp/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does dnp.co.jp use?
dnp.co.jp is built with jQuery, Apache.
Is dnp.co.jp secure (HTTPS)?
Yes. dnp.co.jp uses TLS 1.3 with a certificate issued by Cybertrust Japan Co., Ltd., valid until Dec 27, 2026.
Who hosts dnp.co.jp?
dnp.co.jp is hosted on AKAMAI-ASN1 - Akamai International B.V., NL.
What is dnp.co.jp's SEO score?
dnp.co.jp scored 85/100 for SEO in the latest analysis (great).
What is dnp.co.jp's overall website score?
dnp.co.jp has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.