Free Fill PDF
An intuitive, no-account PDF editor that lets you fill, sign, and download your documents instantly without hidden fees, subscriptions, or credit card requirements.
Added July 17, 2026
· Last analysed July 17, 2026 · via 
· 50% 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 17 July 2026; the live site may have changed since.
Free Fill PDF scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing Permissions-Policy and Content-Security-Policy and no email security records.
Launched on Product Hunt on July 16, 2026. The site is hosted on Render and served through Cloudflare, with a domain registered 3 days before launch. The crawl picked up 14 technologies on this site, covering javascript library, ui library, AI builders, and CDN. The stack includes Tailwind CSS, Base44, and Cloudflare.
For context, it's on one of the most common stacks we track, shared by 447 launches and more locked down than the typical Product Hunt launch.
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Tech Stack (14)
| CDN |
Cloudflare
|
| DNS |
Hostinger DNS
|
| Hosting |
Render
|
| Security | HSTS |
| Transactional email |
SendGrid
|
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| JavaScript library |
Motion
|
PDF.js
|
|
React Router
|
|
| UI library |
Lucide Icons
|
shadcn/ui
|
| SEO |
Google Search Console
|
| AI builder |
Base44
(3)
|
Infrastructure
Email Security
Storage (4)
| Key | Size | Detected as |
|---|---|---|
| base44_analytics_session_id | 21 B | Base44 |
| base44_app_id | 24 B | Base44 |
| base44_from_url | 24 B | Base44 |
| base44_functions_version | 4 B | Base44 |
Readiness Breakdown How?
Performance How?
⚠ 2 images: 2 oversized, 2 without width/height
Broken first-party requests (1), worth fixing
- 401 /api/apps/6a505ebf0fbea1e23f815cfa/entities/User/me
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?
| Signal | Points |
|---|---|
| AI CSS signals | +10 |
| AI onboarding signals | +5 |
| AI writing signals | +5 |
| Recognised AI builder signature | +100 |
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.