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PDFLynx

PDFLynx is the complete online PDF toolkit. Merge, split, compress, convert, protect, sign, edit, and OCR your PDFs for free. No installation required.

Productivity

Added April 16, 2026 · Last analysed April 16, 2026 · via · 44% unique tagline

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 16 April 2026; the live site may have changed since.

PDFLynx has the basics covered well, with complete legal pages, a thorough launch checklist, and fast page loads. Visible gaps: missing several security headers, tracking cookies set before any opt-in, and no email security records.

Launched on Product Hunt on April 16, 2026. The site is served through Cloudflare, with a domain registered 3 weeks before launch. Our crawler found 7 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Tailwind CSS, Cloudflare, and Cloudflare DNS.

It's also on one of the most common stacks we track, shared by 5,951 launches.

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

7.1
StackScope Score
Good
100/100 Launch Readiness
Launch ready
3/3* Legal
Complete*
2/2 Crawl files
Complete
Vibe Score 38 · Some 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 (7)

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Protocol HTTP/3 (2)
Build & Framework
CSS framework Tailwind CSS
Font Google Fonts
Analytics & Marketing
Analytics Google Analytics (2)
SEO Google Search Console

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 14 Apr 2026 to 13 Jul 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered Mar 2026 · HOSTINGER operations, UAB

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
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.

Readiness Breakdown How?

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

Vibe Score Breakdown How?

SignalPoints
AI copy signals +5
AI onboarding signals +5
AI palette signals +5
AI writing signals +5
AI iconography signals +3
AI typography signals +15

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 (2 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy-policy
Terms of Service
/terms-and-conditions
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.

Security Headers (0/6)

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

Performance

104ms response time
Faster than 93% of sites
6 third-party domains loaded

Build

2 JS files
3 CSS files
6 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.