delta.chat
Delta Chat, decentralized secure messenger - Delta Chat
Last scanned Aug 24, 2026, 1:21 PM · 1 view
Overall score
Great
Summary
Delta Chat is a decentralized and secure messenger app 💬 Reliable instant messaging with multi-profile and multi-device support ⚡️ Sign up to secure and interoperable chatmail relays 🥳 Interactive ... This website uses Nginx hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Delta Chat is a decentralized and secure messenger app 💬 Reliable instant messaging with multi-profile and multi-device support ⚡️ Sign up to secure and interoperable chatmail relays 🥳 Interactive ...
- Germany
- Hosted on HETZNER-AS - Hetzner Online GmbH, DE
Top issues to fix
9 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.
TLS certificate expires in 17 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
+3 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
116 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Delta Chat is a decentralized and secure messenger app 💬 Reliable instant messaging with multi-profile and multi-device support ⚡️ Sign up to secure and interoperable chatmail relays 🥳 Interactive ...
Contact
Email, phone, and address published on this site's own pages.
- delta@chaos.social
Meta tags
- Title
- Delta Chat, decentralized secure messenger - Delta Chat
- Description
- Delta Chat is a decentralized and secure messenger app 💬 Reliable instant messaging with multi-profile and multi-device support ⚡️ Sign up to secure and interoperable chatmail relays 🥳 Interactive ...
- Canonical
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0, minimum-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- HETZNER-AS - Hetzner Online GmbH, DE
- CDN provider
- —
- IP address
- 78.47.115.154
- ASN
- AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)
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
- delta.chat
- Valid from
- Jun 13, 2026
- Valid to
- Sep 11, 2026
- Days until expiry
- 17
- SAN domains
- delta.chat
Security headers
- Strict-Transport-SecurityMissing
- 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 0 · H3 0
Links
34 internal · 10 external · 0 broken
Images
7 total · 0 missing alt
Scripts / Styles
1 scripts · 1 stylesheets
JS / CSS size
2.0 KB · 7.4 KB
Page size
1.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- Missing canonical link
- No structured data (JSON-LD) found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://delta.chat
- Final URL
- https://delta.chat
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 116 ms
- HTML size
- 1.0 KB
- Redirect chain
- https://delta.chat
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Frequently asked questions
- What technology does delta.chat use?
- delta.chat is built with Nginx.
- Is delta.chat secure (HTTPS)?
- Yes. delta.chat uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 11, 2026.
- Who hosts delta.chat?
- delta.chat is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
- What is delta.chat's SEO score?
- delta.chat scored 75/100 for SEO in the latest analysis (fair).
- What is delta.chat's overall website score?
- delta.chat has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card