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bookoff.co.jp

本を売るならBOOKOFF(ブックオフ)

Last scanned Aug 1, 2026, 12:00 PM · 11 views

88

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 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。

Top issues to fix

8 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

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

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Meta description longer than 160 characters

    SEO

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

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

80

SEO

4 issue(s) found

100

Performance

143 ms

80

Security

HTTPS & header checks

95

Accessibility

1 issue(s) found

Score history

0 overall since Jul 25, 2026

Overall
88
SEO
80
Security
80
Performance
100
Accessibility
95

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。

FacebookInstagramX (Twitter)

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

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

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

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
GlobalSign nv-sa
Subject
*.bookoff.co.jp
Valid from
May 12, 2026
Valid to
Nov 27, 2026
Days until expiry
117
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 · 20 broken

Images

35 total · 7 missing alt

Scripts / Styles

19 scripts · 11 stylesheets

JS / CSS size

785 B · 0 B

Page size

32.5 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
143 ms
HTML size
32.5 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?
Hosting provider information for bookoff.co.jp is not available yet.
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.
Has bookoff.co.jp's score changed over time?
bookoff.co.jp's overall score has stayed steady at 88/100 since Jul 25, 2026.