bestjuku.com
塾選（ジュクセン） | 日本最大級の塾・学習塾検索サイト
Last scanned Jul 27, 2026, 12:43 PM · 1 view
Overall score
Great
Summary
かが屋が出演するCM放映中！【日本最大級！口コミから塾・学習塾を探すなら『塾選（ジュクセン）』】塾の特徴、口コミ、料金など塾選びに役立つ情報満載。小��… This website uses Astro hosted on AWS behind CloudFront CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
かが屋が出演するCM放映中！【日本最大級！口コミから塾・学習塾を探すなら『塾選（ジュクセン）』】塾の特徴、口コミ、料金など塾選びに役立つ情報満載。小学生・中学生・高校生・高卒生の受験対策や成績向上・補習など、目的に合った塾・学習塾を全国約10万教室から比較検討できます。
- United States
- Hosted on AWS
Top issues to fix
7 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
10 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
かが屋が出演するCM放映中！【日本最大級！口コミから塾・学習塾を探すなら『塾選（ジュクセン）』】塾の特徴、口コミ、料金など塾選びに役立つ情報満載。小学生・中学生・高校生・高卒生の受験対策や成績向上・補習など、目的に合った塾・学習塾を全国約10万教室から比較検討できます。
Meta tags
- Title
- 塾選（ジュクセン） | 日本最大級の塾・学習塾検索サイト
- Description
- かが屋が出演するCM放映中！【日本最大級！口コミから塾・学習塾を探すなら『塾選（ジュクセン）』】塾の特徴、口コミ、料金など塾選びに役立つ情報満載。小学生・中学生・高校生・高卒生の受験対策や成績向上・補習など、目的に合った塾・学習塾を全国約10万教室から比較検討できます。
- Canonical
- https://bestjuku.com/
- Language
- ja
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- max-image-preview:large
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 18.66.57.98
- 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
- Amazon
- Subject
- bestjuku.com
- Valid from
- Oct 3, 2025
- Valid to
- Nov 1, 2026
- Days until expiry
- 97
- SAN domains
- bestjuku.com, *.bestjuku.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 10 · H3 32
Links
231 internal · 4 external · 0 broken
Images
173 total · 0 missing alt
Scripts / Styles
15 scripts · 6 stylesheets
JS / CSS size
656 KB · 135 KB
Page size
143 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 32
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Meta description longer than 160 characters
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://bestjuku.com
- Final URL
- https://bestjuku.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 8 ms
- HTML size
- 143 KB
- Redirect chain
- https://bestjuku.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does bestjuku.com use?
- bestjuku.com is built with Astro.
- Is bestjuku.com secure (HTTPS)?
- Yes. bestjuku.com uses TLS 1.3 with a certificate issued by Amazon, valid until Nov 1, 2026.
- Who hosts bestjuku.com?
- bestjuku.com is hosted on AWS, behind CloudFront CDN.
- What is bestjuku.com's SEO score?
- bestjuku.com scored 85/100 for SEO in the latest analysis (great).
- What is bestjuku.com's overall website score?
- bestjuku.com has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card