What technology does nicovideo.jp use?

nicovideo.jp is built with Apache.

Is nicovideo.jp secure (HTTPS)?

Yes. nicovideo.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Dec 13, 2026.

Who hosts nicovideo.jp?

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

What is nicovideo.jp's SEO score?

nicovideo.jp scored 75/100 for SEO in the latest analysis (fair).

What is nicovideo.jp's overall website score?

nicovideo.jp has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.

Has nicovideo.jp's score changed over time?

nicovideo.jp's overall score has improved by 5 points (from 84 to 89) since Jul 24, 2026.

nicovideo.jp

ニコニコ

Last scanned Jul 31, 2026, 7:00 PM · 9 views

Overall score

Great

Summary

日本最大級の動画サービス、ニコニコ（niconico）。動画にコメントを付けて楽しむニコニコ動画や、生放送番組にリアルタイムでコメントを付けられるニコニコ生��… This website uses Apache behind CloudFront CDN. SEO is good (75/100) and accessibility is excellent (95/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

日本最大級の動画サービス、ニコニコ（niconico）。動画にコメントを付けて楽しむニコニコ動画や、生放送番組にリアルタイムでコメントを付けられるニコニコ生放送のほか、イラスト・マンガ・最新ニュース・ゲームなど、エンターテイメントを全て無料で楽しめる！

Top issues to fix

8 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 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.
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.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

SEO

4 issue(s) found

100

Performance

734 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

+5 overall since Jul 24, 2026

Overall: 89
SEO: 75
Security: 90
Performance: 100
Accessibility: 95

Organization

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

X (Twitter)

Meta tags

Title: ニコニコ
Description: 日本最大級の動画サービス、ニコニコ（niconico）。動画にコメントを付けて楽しむニコニコ動画や、生放送番組にリアルタイムでコメントを付けられるニコニコ生放送のほか、イラスト・マンガ・最新ニュース・ゲームなど、エンターテイメントを全て無料で楽しめる！
Canonical: https://www.nicovideo.jp/
Language: ja-jp
Charset: utf-8
Viewport
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

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

DNS records

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

TLS / SSL certificate

Version: TLS 1.3
Issuer: Amazon
Subject: nicovideo.jp
Valid from: Nov 14, 2025
Valid to: Dec 13, 2026
Days until expiry: 135
SAN domains: nicovideo.jp, video.nicovideo.jp, *.nicovideo.jp, *.video.nicovideo.jp

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

15 internal · 38 external · 20 broken

Images

0 total · 0 missing alt

Scripts / Styles

41 scripts · 1 stylesheets

JS / CSS size

32.9 KB · 89 B

Page size

144 KB

Robots.txt & Sitemap

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

SEO issues

Meta description longer than 160 characters
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://nicovideo.jp
Final URL: https://www.nicovideo.jp/
HTTP status: 200
HTTP version: HTTP/2
Response time: 732 ms
HTML size: 144 KB
Redirect chain: https://nicovideo.jp → https://www.nicovideo.jp/

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Frequently asked questions

What technology does nicovideo.jp use?: nicovideo.jp is built with Apache.
Is nicovideo.jp secure (HTTPS)?: Yes. nicovideo.jp uses TLS 1.3 with a certificate issued by Amazon, valid until Dec 13, 2026.
Who hosts nicovideo.jp?: Hosting provider information for nicovideo.jp is not available yet.
What is nicovideo.jp's SEO score?: nicovideo.jp scored 75/100 for SEO in the latest analysis (fair).
What is nicovideo.jp's overall website score?: nicovideo.jp has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
Has nicovideo.jp's score changed over time?: nicovideo.jp's overall score has improved by 5 points (from 84 to 89) since Jul 24, 2026.