hypothes.is
Hypothesis | The #1 Social Annotation Tool for Higher Education
Last scanned Aug 1, 2026, 7:00 PM · 8 views
Overall score
Great
Summary
Hypothesis is the leading social annotation platform trusted by 300+ institutions to boost student engagement, comprehension, and critical thinking — seamlessly integrated into your LMS. This website uses WordPress behind Fastly CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.
Hypothesis is the leading social annotation platform trusted by 300+ institutions to boost student engagement, comprehension, and critical thinking — seamlessly integrated into your LMS.
Top issues to fix
8 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.
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.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
970 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+1 overall since Jul 25, 2026
- Overall
- 85
- SEO
- 80
- Security
- 75
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Hypothesis | The #1 Social Annotation Tool for Higher Education
- Description
- Hypothesis is the leading social annotation platform trusted by 300+ institutions to boost student engagement, comprehension, and critical thinking — seamlessly integrated into your LMS.
- Canonical
- https://web.hypothes.is/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Fastly
- 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
- Let's Encrypt
- Subject
- connect.hypothes.is
- Valid from
- Jul 18, 2026
- Valid to
- Oct 16, 2026
- Days until expiry
- 75
- SAN domains
- connect.hypothes.is, web.hypothes.is
Security headers
- Strict-Transport-SecurityEnabled
- 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 12 · H3 7
Links
47 internal · 11 external · 20 broken
Images
35 total · 0 missing alt
Scripts / Styles
141 scripts · 22 stylesheets
JS / CSS size
78.4 KB · 160 KB
Page size
320 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Meta description longer than 160 characters
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://hypothes.is
- Final URL
- https://web.hypothes.is
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 964 ms
- HTML size
- 320 KB
- Redirect chain
- https://hypothes.is → https://web.hypothes.is
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does hypothes.is use?
- hypothes.is is built with WordPress, Bootstrap, jQuery, Nginx.
- Is hypothes.is secure (HTTPS)?
- Yes. hypothes.is uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 16, 2026.
- Who hosts hypothes.is?
- Hosting provider information for hypothes.is is not available yet.
- What is hypothes.is's SEO score?
- hypothes.is scored 80/100 for SEO in the latest analysis (great).
- What is hypothes.is's overall website score?
- hypothes.is has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
- Has hypothes.is's score changed over time?
- hypothes.is's overall score has improved by 1 point (from 84 to 85) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card