mysteryscience.com
Mystery Science: Lessons for elementary teachers
Last scanned Aug 7, 2026, 4:00 AM · 10 views
Overall score
Excellent
Summary
Mystery Science offers open-and-go lessons that inspire kids to love science. This website uses Ruby on Rails hosted on AWS. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Mystery Science offers open-and-go lessons that inspire kids to love science. The hook, visuals, and activity have all been prepared for you. Less prep, more learning.
- United States
- Hosted on AWS
Top issues to fix
5 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
SEO
3 issue(s) found
Performance
880 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+4 overall since Jul 26, 2026
- Overall
- 93
- SEO
- 85
- Security
- 90
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Mystery Science offers open-and-go lessons that inspire kids to love science. The hook, visuals, and activity have all been prepared for you. Less prep, more learning.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Mystery Science: Lessons for elementary teachers
- Description
- Mystery Science offers open-and-go lessons that inspire kids to love science. The hook, visuals, and activity have all been prepared for you. Less prep, more learning.
- Canonical
- https://mysteryscience.com/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- —
- IP address
- 35.71.145.101
- 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
- Let's Encrypt
- Subject
- mysteryscience.com
- Valid from
- Jul 14, 2026
- Valid to
- Oct 12, 2026
- Days until expiry
- 66
- SAN domains
- mysteryscience.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 3 cookie(s) observed
Content & assets
Headings
H1 4 · H2 9 · H3 65
Links
69 internal · 8 external · 0 broken
Images
3 total · 0 missing alt
Scripts / Styles
16 scripts · 3 stylesheets
JS / CSS size
525 KB · 112 KB
Page size
250 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 11
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- Multiple H1 headings found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://mysteryscience.com
- Final URL
- https://mysteryscience.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 875 ms
- HTML size
- 250 KB
- Redirect chain
- https://mysteryscience.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does mysteryscience.com use?
- mysteryscience.com is built with Ruby on Rails.
- Is mysteryscience.com secure (HTTPS)?
- Yes. mysteryscience.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 12, 2026.
- Who hosts mysteryscience.com?
- mysteryscience.com is hosted on AWS.
- What is mysteryscience.com's SEO score?
- mysteryscience.com scored 85/100 for SEO in the latest analysis (great).
- What is mysteryscience.com's overall website score?
- mysteryscience.com has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.
- Has mysteryscience.com's score changed over time?
- mysteryscience.com's overall score has improved by 4 points (from 89 to 93) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card