stuvia.com
Buy and sell quality study notes and resources - Stuvia
Last scanned Aug 2, 2026, 4:00 PM · 10 views
Overall score
Great
Summary
Save time by focussing on what matters. This website uses Apache behind CloudFront CDN. SEO is excellent (90/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: robots.txt not found.
Stuvia
Save time by focussing on what matters. Study class notes and textbook summaries written by fellow students to quickly understand the essentials
Top issues to fix
8 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.
8 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.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+2 more issues — details in the sections below.
SEO
2 issue(s) found
Performance
342 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+10 overall since Jul 26, 2026
- Overall
- 89
- SEO
- 90
- Security
- 75
- Performance
- 100
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
Stuvia
Save time by focussing on what matters. Study class notes and textbook summaries written by fellow students to quickly understand the essentials
- Founded
- Jan 1, 2010
Contact
Email, phone, and address published on this site's own pages.
- support@stuvia.com
Meta tags
- Title
- Buy and sell quality study notes and resources - Stuvia
- Description
- Find your study notes, summaries, flashcards & other study material at Stuvia. Prevent resits and get higher grades. Discover your study material at Stuvia.
- Canonical
- https://www.stuvia.com/
- Language
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- CloudFront
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- www.stuvia.com
- Valid from
- Mar 22, 2026
- Valid to
- Oct 5, 2026
- Days until expiry
- 64
- SAN domains
- www.stuvia.com, www.stuvia.de, fr.stuvia.be, www.stuvia.fr, www.stuvia.nl, www.stuvia.es, www.stuvia.co.za, www.stuvia.be, www.stuvia.co.uk
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 8 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 6
Links
80 internal · 5 external · 20 broken
Images
7 total · 0 missing alt
Scripts / Styles
6 scripts · 1 stylesheets
JS / CSS size
26.6 KB · 0 B
Page size
209 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Missing <html lang> attribute
Scan details
- Requested URL
- https://stuvia.com
- Final URL
- https://www.stuvia.com:443/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 338 ms
- HTML size
- 209 KB
- Redirect chain
- https://stuvia.com → https://www.stuvia.com:443/
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Frequently asked questions
- What technology does stuvia.com use?
- stuvia.com is built with PHP, Apache.
- Is stuvia.com secure (HTTPS)?
- Yes. stuvia.com uses TLS 1.3 with a certificate issued by Amazon, valid until Oct 5, 2026.
- Who hosts stuvia.com?
- Hosting provider information for stuvia.com is not available yet.
- What is stuvia.com's SEO score?
- stuvia.com scored 90/100 for SEO in the latest analysis (excellent).
- What is stuvia.com's overall website score?
- stuvia.com has an overall SiteGraph score of 89/100, combining SEO, performance, security, and accessibility.
- What company operates stuvia.com?
- stuvia.com is operated by Stuvia. Save time by focussing on what matters. Study class notes and textbook summaries written by fellow students to quickly understand the essentials
- Has stuvia.com's score changed over time?
- stuvia.com's overall score has improved by 10 points (from 79 to 89) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card