bookoff.co.jp
本を売るならBOOKOFF(ブックオフ)
Last scanned Jul 25, 2026, 10:25 AM · 2 views
Overall score
Great
Summary
本を売るならブックオフ♪でおなじみのBOOKOFF公式サイト。もちろん本だけではなく、CD・DVD・ゲーム、おもちゃやトレカ・家電・携帯・洋服（古着）など、さまざ�… This website uses Apache hosted on AWS behind CloudFront CDN. SEO is good (80/100) and accessibility is excellent (95/100). Security scores good (80/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
本を売るならブックオフ♪でおなじみのBOOKOFF公式サイト。もちろん本だけではなく、CD・DVD・ゲーム、おもちゃやトレカ・家電・携帯・洋服（古着）など、さまざまな商品を買取・販売しています。
- United States
- Hosted on AWS
Top issues to fix
7 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+1 more issue — details in the sections below.
SEO
4 issue(s) found
Performance
151 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
本を売るならブックオフ♪でおなじみのBOOKOFF公式サイト。もちろん本だけではなく、CD・DVD・ゲーム、おもちゃやトレカ・家電・携帯・洋服（古着）など、さまざまな商品を買取・販売しています。
Meta tags
- Title
- 本を売るならBOOKOFF(ブックオフ)
- Description
- 本を売るならブックオフ♪でおなじみのBOOKOFF公式サイト。もちろん本だけではなく、CD・DVD・ゲーム、おもちゃやトレカ・家電・携帯・洋服（古着）など、さまざまな商品を買取・販売しています。
- Canonical
- https://www.bookoff.co.jp/
- Language
- ja
- Charset
- utf-8
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 18.239.153.2
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS |
|
| CAA | — |
| CNAME |
|
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- GlobalSign nv-sa
- Subject
- *.bookoff.co.jp
- Valid from
- May 12, 2026
- Valid to
- Nov 27, 2026
- Days until expiry
- 124
- SAN domains
- *.bookoff.co.jp, bookoff.co.jp
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 12 · H3 0
Links
42 internal · 25 external · 0 broken
Images
35 total · 7 missing alt
Scripts / Styles
19 scripts · 11 stylesheets
JS / CSS size
243 KB · 86.1 KB
Page size
32.3 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
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing viewport meta tag
Scan details
- Requested URL
- https://bookoff.co.jp
- Final URL
- https://www.bookoff.co.jp:443/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 151 ms
- HTML size
- 32.3 KB
- Redirect chain
- https://bookoff.co.jp → https://www.bookoff.co.jp:443/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does bookoff.co.jp use?
- bookoff.co.jp is built with jQuery, Apache.
- Is bookoff.co.jp secure (HTTPS)?
- Yes. bookoff.co.jp uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Nov 27, 2026.
- Who hosts bookoff.co.jp?
- bookoff.co.jp is hosted on AWS, behind CloudFront CDN.
- What is bookoff.co.jp's SEO score?
- bookoff.co.jp scored 80/100 for SEO in the latest analysis (great).
- What is bookoff.co.jp's overall website score?
- bookoff.co.jp has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card