planbook.com
Planbook - The Leader in Lesson Planning
Last scanned Aug 24, 2026, 1:21 PM · 1 view
Overall score
Great
Summary
With over one million teachers and one billion lessons, Planbook is the established leader in online lesson planning!. This website uses Vue.js hosted on AWS behind CloudFront CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.
With over one million teachers and one billion lessons, Planbook is the established leader in online lesson planning!
- United States
- Hosted on AWS
Top issues to fix
9 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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
+3 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
4 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
- support@planbook.com
- Phone
- +1856-386-2626
Meta tags
- Title
- Planbook - The Leader in Lesson Planning
- Description
- With over one million teachers and one billion lessons, Planbook is the established leader in online lesson planning!
- Canonical
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width,initial-scale=1,shrink-to-fit=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 108.159.80.113
- 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
- planbook.com
- Valid from
- Jul 19, 2026
- Valid to
- Feb 1, 2027
- Days until expiry
- 161
- SAN domains
- planbook.com, *.planbook.com, www.planbook.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 13 · H2 16 · H3 2
Links
10 internal · 11 external · 2 broken
Images
104 total · 0 missing alt
Scripts / Styles
4 scripts · 6 stylesheets
JS / CSS size
763 KB · 247 KB
Page size
3.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://planbook.com
- Final URL
- https://planbook.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 4 ms
- HTML size
- 3.0 KB
- Redirect chain
- https://planbook.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does planbook.com use?
- planbook.com is built with Vue.js.
- Is planbook.com secure (HTTPS)?
- Yes. planbook.com uses TLS 1.3 with a certificate issued by Amazon, valid until Feb 1, 2027.
- Who hosts planbook.com?
- planbook.com is hosted on AWS, behind CloudFront CDN.
- What is planbook.com's SEO score?
- planbook.com scored 75/100 for SEO in the latest analysis (fair).
- What is planbook.com's overall website score?
- planbook.com has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card