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SGSiteGraph

city.sapporo.jp

札幌市公式ホームページ - City of Sapporo

Last scanned Jul 26, 2026, 12:19 PM

81

Overall score

Great

Summary

This website uses jQuery. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

Top issues to fix

11 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.

  • Missing Content-Security-Policy header

    Security

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

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

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

  • 2 cookies 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.

+5 more issues — details in the sections below.

65

SEO

5 issue(s) found

100

Performance

9 ms

65

Security

HTTPS & header checks

100

Accessibility

0 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.

YouTubeX (Twitter)Instagram

Contact

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

Meta tags

Title
札幌市公式ホームページ - City of Sapporo
Description
Canonical
Language
ja
Charset
utf-8
Viewport
width=device-width, maximum-scale=3.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
ホーム
og:description
—
og:type
article
og:url
https://www.city.sapporo.jp/index.html

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQuery

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Japan Registry Services Co., Ltd.
Subject
*.city.sapporo.jp
Valid from
Mar 31, 2026
Valid to
Sep 30, 2026
Days until expiry
63
SAN domains
*.city.sapporo.jp, city.sapporo.jp

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 0

Links

163 internal · 34 external · 20 broken

Images

60 total · 0 missing alt

Scripts / Styles

15 scripts · 9 stylesheets

JS / CSS size

183 B · 0 B

Page size

40.1 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing meta description
  • Missing canonical link
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://city.sapporo.jp
Final URL
https://www.city.sapporo.jp:443/
HTTP status
200
HTTP version
HTTP/2
Response time
9 ms
HTML size
40.1 KB
Redirect chain
https://city.sapporo.jp → https://www.city.sapporo.jp:443/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does city.sapporo.jp use?
city.sapporo.jp is built with jQuery.
Is city.sapporo.jp secure (HTTPS)?
Yes. city.sapporo.jp uses TLS 1.3 with a certificate issued by Japan Registry Services Co., Ltd., valid until Sep 30, 2026.
Who hosts city.sapporo.jp?
Hosting provider information for city.sapporo.jp is not available yet.
What is city.sapporo.jp's SEO score?
city.sapporo.jp scored 65/100 for SEO in the latest analysis (fair).
What is city.sapporo.jp's overall website score?
city.sapporo.jp has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.