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SGSiteGraph

doorkeeper.jp

セミナー・勉強会・イベント管理ツール | Doorkeeper

Last scanned Jul 26, 2026, 5:17 AM · 1 view

85

Overall score

Great

Summary

セミナーやイベントの開催も、集客も、集金も。Doorkeeperなら全部まとめて簡単に。. This website uses Google Analytics hosted on BI-631 - Build io, Inc., US. SEO is good (75/100) and accessibility is good (85/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.

セミナーやイベントの開催も、集客も、集金も。Doorkeeperなら全部まとめて簡単に。

United States
Hosted on BI-631 - Build io, Inc., US

Top issues to fix

7 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.

  • 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.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

  • No structured data (JSON-LD) found

    SEO

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

  • Missing OpenGraph tags

    SEO

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

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

75

SEO

4 issue(s) found

90

Performance

1.81 s

90

Security

HTTPS & header checks

85

Accessibility

1 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.

セミナーやイベントの開催も、集客も、集金も。Doorkeeperなら全部まとめて簡単に。

Contact

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

Meta tags

Title
セミナー・勉強会・イベント管理ツール | Doorkeeper
Description
セミナーやイベントの開催も、集客も、集金も。Doorkeeperなら全部まとめて簡単に。
Canonical
https://www.doorkeeper.jp/
Language
ja
Charset
utf-8
Viewport
width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no
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.

Ruby on RailsGoogle Analytics

Hosting & CDN

CDN provider
—
IP address
66.71.205.0
ASN
AS17294 (BI-631 - Build io, Inc., US)

DNS records

TypeValue
A
  • 66.71.205.0
AAAA—
MX—
TXT—
NS—
CAA—
CNAME
  • a976dda2-8c80-493c-aa68-1f6f23530551.ssl.builddns.com
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
*.doorkeeper.jp
Valid from
Jul 25, 2026
Valid to
Oct 23, 2026
Days until expiry
86
SAN domains
*.doorkeeper.jp

Security headers

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

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 9

Links

39 internal · 18 external · 0 broken

Images

25 total · 12 missing alt

Scripts / Styles

19 scripts · 2 stylesheets

JS / CSS size

346 KB · 267 KB

Page size

38.5 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
10
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Title longer than 60 characters
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text

Scan details

Requested URL
https://doorkeeper.jp
Final URL
https://www.doorkeeper.jp/
HTTP status
200
HTTP version
HTTP/1.1
Response time
1.81 s
HTML size
38.5 KB
Redirect chain
https://doorkeeper.jp → https://www.doorkeeper.jp/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does doorkeeper.jp use?
doorkeeper.jp is built with Ruby on Rails, Google Analytics.
Is doorkeeper.jp secure (HTTPS)?
Yes. doorkeeper.jp uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 23, 2026.
Who hosts doorkeeper.jp?
doorkeeper.jp is hosted on BI-631 - Build io, Inc., US.
What is doorkeeper.jp's SEO score?
doorkeeper.jp scored 75/100 for SEO in the latest analysis (fair).
What is doorkeeper.jp's overall website score?
doorkeeper.jp has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.