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Diffusion PDF

A PDF with a 55-million-parameter denoising diffusion model embedded within it.

Added August 13, 2026 · Last analysed August 13, 2026 · via Hacker News

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 13 August 2026; the live site may have changed since.

Diffusion PDF is missing several launch fundamentals. Main gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on August 13, 2026. The site is hosted on Vercel, with a domain registered 10 months before launch. Our crawler found 4 technologies on this site, covering analytics, hosting, security, and tag management. The stack includes Google Analytics, Google Tag Manager, and HSTS.

It's also on one of the most common stacks we track, shared by 3,663 launches.

If you own this site, refresh the snapshot and see the full fix list any time →

Vibe Score 13 · Few AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (4)

Infrastructure
Hosting Vercel
Security HSTS
Analytics & Marketing
Analytics Google Analytics (4)
Tag management Google Tag Manager (2)

Infrastructure

Network
AS16509 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Let's Encrypt
Valid 12 Aug 2026 to 10 Nov 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
10 months
Registered Sep 2025 · CloudFlare, Inc.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
DKIM (via apex alexvd.dev) Detected on apex alexvd.dev
DMARC p=none (via apex alexvd.dev) None (p=none). Monitoring only.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (2)

Cookies (2)
NameLifetimeDetected as
_ga 1y Google Analytics
_ga_FEPKC79D7E 1y Google Analytics

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description) (partial) missing og:image
Twitter card meta tags
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
- Canonical URL declared

Performance How?

43 ms Server response
99% Faster than peers
668 ms Largest contentful paint
0.00 Cumulative layout shift
2.0 MB Page weight
4 KB Image weight
2 Third-party domains
0 Console errors
0 Failed requests

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

SignalPoints
Placeholder branding +10
AI iconography signals +3

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

No AI stance declared
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
Detection works best on English language sites.

Security Headers (1/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

1 JS files
0 CSS files
2 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.