whispersystems.org
Signal >> Home
Last scanned Jul 27, 2026, 9:43 AM
Overall score
Fair
Summary
This website uses jQuery hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is fair (70/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Missing meta description.
- United States
- Hosted on Cloudflare
Top issues to fix
10 issues found · 4 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 meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
+4 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
32 ms
Security
HTTPS & header checks
Accessibility
1 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.
- press@signal.org
Meta tags
- Title
- Signal >> Home
- Description
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://signal.org/assets/images/favicon/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.18.11.47
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- signal.org
- Valid from
- Jul 7, 2026
- Valid to
- Oct 5, 2026
- Days until expiry
- 70
- SAN domains
- signal.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 4 · H3 4
Links
80 internal · 7 external · 1 broken
Images
10 total · 10 missing alt
Scripts / Styles
4 scripts · 2 stylesheets
JS / CSS size
2.1 KB · 0 B
Page size
21.7 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- Over half of images are missing alt text
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://whispersystems.org
- Final URL
- https://signal.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 32 ms
- HTML size
- 21.7 KB
- Redirect chain
- https://whispersystems.org → https://signal.org/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does whispersystems.org use?
- whispersystems.org is built with jQuery.
- Is whispersystems.org secure (HTTPS)?
- Yes. whispersystems.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 5, 2026.
- Who hosts whispersystems.org?
- whispersystems.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is whispersystems.org's SEO score?
- whispersystems.org scored 65/100 for SEO in the latest analysis (fair).
- What is whispersystems.org's overall website score?
- whispersystems.org has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
- Is whispersystems.org hiring?
- whispersystems.org has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card