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SGSiteGraph

corona.co.jp

株式会社コロナ

Last scanned Aug 24, 2026, 1:23 PM

82

Overall score

Great

Summary

コロナは石油ファンヒーターや石油ストーブ、給湯機、エアコン、美容機器などを取り扱う総合住宅設備メーカーです。. This website uses Apache. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

コロナは石油ファンヒーターや石油ストーブ、給湯機、エアコン、美容機器などを取り扱う総合住宅設備メーカーです。

Top issues to fix

10 issues found · 2 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 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.

  • Meta description longer than 160 characters

    SEO

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

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

+4 more issues — details in the sections below.

70

SEO

5 issue(s) found

100

Performance

135 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.

コロナは石油ファンヒーターや石油ストーブ、給湯機、エアコン、美容機器などを取り扱う総合住宅設備メーカーです。

FacebookInstagramYouTube

Meta tags

Title
株式会社コロナ
Description
コロナは石油ファンヒーターや石油ストーブ、給湯機、エアコン、美容機器などを取り扱う総合住宅設備メーカーです。
Canonical
Language
ja
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
株式会社コロナ
og:description
コロナは石油ファンヒーターや石油ストーブ、給湯機、エアコン、美容機器などを取り扱う総合住宅設備メーカーです。
og:type
website
og:url
https://www.corona.co.jp/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AnalyticsApache

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 1.2
Issuer
DigiCert Inc
Subject
www.corona.co.jp
Valid from
Sep 30, 2025
Valid to
Oct 29, 2026
Days until expiry
65
SAN domains
www.corona.co.jp, corona.co.jp

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 7 · H3 16

Links

95 internal · 10 external · 2 broken

Images

45 total · 0 missing alt

Scripts / Styles

15 scripts · 6 stylesheets

JS / CSS size

839 B · 0 B

Page size

26.6 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 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://corona.co.jp
Final URL
https://corona.co.jp
HTTP status
200
HTTP version
HTTP/1.1
Response time
135 ms
HTML size
26.6 KB
Redirect chain
https://corona.co.jp

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does corona.co.jp use?
corona.co.jp is built with jQuery, Google Analytics, Apache.
Is corona.co.jp secure (HTTPS)?
Yes. corona.co.jp uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Oct 29, 2026.
Who hosts corona.co.jp?
Hosting provider information for corona.co.jp is not available yet.
What is corona.co.jp's SEO score?
corona.co.jp scored 70/100 for SEO in the latest analysis (fair).
What is corona.co.jp's overall website score?
corona.co.jp has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.