hypothes.is
Hypothesis | The #1 Social Annotation Tool for Higher Education
Last scanned Jul 25, 2026, 6:25 PM · 2 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 hosted on Fastly behind Fastly CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance good (80/100). 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.
- United States
- Hosted on Fastly
Top issues to fix
7 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.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
336 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.
Source: https://web.hypothes.is/contact/
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
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
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
- 82
- 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 · 7 broken
Images
35 total · 0 missing alt
Scripts / Styles
139 scripts · 21 stylesheets
JS / CSS size
195 KB · 521 KB
Page size
310 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 21
- 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.
Careers
| Role | Location | Posted |
|---|---|---|
| Account Manager | — | — |
| Engineering Values | — | — |
| Hiring Process | — | — |
Scan details
- Requested URL
- https://hypothes.is
- Final URL
- https://web.hypothes.is
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 330 ms
- HTML size
- 310 KB
- Redirect chain
- https://hypothes.is → https://web.hypothes.is
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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?
- hypothes.is is hosted on Fastly, behind Fastly CDN.
- What is hypothes.is's SEO score?
- hypothes.is scored 85/100 for SEO in the latest analysis (great).
- What is hypothes.is's overall website score?
- hypothes.is has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
- Is hypothes.is hiring?
- Yes. hypothes.is has 3 open roles listed on their careers page.
OpenGraph & Twitter Card
OpenGraph
Twitter Card