nicovideo.jp

ニコニコ

Last scanned Jul 24, 2026, 6:17 PM

84

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 hosted on AWS behind CloudFront CDN. SEO is good (85/100) and accessibility is fair (65/100). Security scores excellent (90/100) and performance excellent (90/100). 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！

United States

Hosted on AWS

Top issues to fix

7 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Over half of images are missing alt text
Accessibility
Add alt attributes to images — screen readers depend on them, and they help image SEO.
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.

+1 more issue — details in the sections below.

85

SEO

2 issue(s) found

90

Performance

1.01 s

90

Security

HTTPS & header checks

65

Accessibility

2 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.

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！

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: en-us
Charset: utf-8
Viewport
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Google Analytics Google Ads Apache

Hosting & CDN

Hosting provider: AWS
CDN provider: CloudFront
IP address: 108.159.61.47
ASN: AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

Type	Value
A	108.159.61.47 108.159.61.101 108.159.61.6 108.159.61.100
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	www.video.nicovideo.jp
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: 142
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

35 internal · 89 external · 2 broken

Images

14 total · 14 missing alt

Scripts / Styles

71 scripts · 1 stylesheets

JS / CSS size

175 KB · 167 KB

Page size

145 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 38
sitemap.xml: Found
URLs in sitemap: 273

SEO issues

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

Scan details

Requested URL: https://nicovideo.jp
Final URL: https://www.nicovideo.jp/
HTTP status: 200
HTTP version: HTTP/2
Response time: 1.01 s
HTML size: 145 KB
Redirect chain: https://nicovideo.jp → https://www.nicovideo.jp/

See something wrong on this report? Request a correction

Same technology stack

dsadata.intel.com

Intel® Driver & Support Assistant

apachegoogle-analyticsgoogle-ads

AKAMAI-AS - Akamai Technologies, Inc., US

truist.com

Truist Bank | Checking, Savings, Lending, and Financial Services

apachegoogle-analyticsmeta-pixel

AWS· CloudFront

informatica.com

AI Powered Cloud Data Management | Informatica

apachegoogle-analyticsgoogle-ads

AKAMAI-AS - Akamai Technologies, Inc., US

fujifilm.co.jp

富士フイルム [日本]

apachegoogle-analyticsgoogle-ads

AWS· CloudFront

superhosting.bg

Хостинг и домейни от СуперХостинг.БГ

apachegoogle-analyticsgoogle-ads

SUPERHOSTING_AS - SuperHosting.BG Ltd., BG

keyence.com

KEYENCE CORPORATION OF AMERICA

apachegoogle-analyticsgoogle-ads

AKAMAI-AS - Akamai Technologies, Inc., US

Same hosting provider

laaa.com

Los Angeles Multifamily Broker | LA Apartment Advisors

nextjsgoogle-analytics

iquw.com

Home | Starr | IQUW

wordpressnginxgoogle-analytics

crei.com

CREI | Decision-to-Capital Intelligence

nginxgoogle-analytics

natural.com

Natural — Powering agentic payments

flippingbook.com

FlippingBook | Flipbook Maker for Digital Publishing

nginxgoogle-analyticsgoogle-ads

opera.com

Opera Web Browser | Faster, Safer, Smarter | Opera

meta-pixelgoogle-analytics

Frequently asked questions

What technology does nicovideo.jp use?: nicovideo.jp is built with Google Analytics, Google Ads, 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?: nicovideo.jp is hosted on AWS, behind CloudFront CDN.
What is nicovideo.jp's SEO score?: nicovideo.jp scored 85/100 for SEO in the latest analysis (great).
What is nicovideo.jp's overall website score?: nicovideo.jp has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.