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PDF Brief

PDF Summarizer for free previews and full-document analysis. Upload a PDF to get key points, then unlock structured findings, evidence, and exports online.

Productivity

Added July 18, 2026 · Last analysed July 18, 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 18 July 2026; the live site may have changed since.

PDF Brief is largely in shape, with complete legal pages, a thorough launch checklist, and well-configured email security. Main gaps: missing several security headers and tracking cookies set before any opt-in.

Launched on Product Hunt on July 18, 2026. The site is served through Cloudflare, with a domain registered 2 days before launch. The crawl picked up 13 technologies on this site, covering ui library, analytics, CDN, and CSS frameworks. The stack includes Tailwind CSS, vinext, and Cloudflare.

For context, it's one of only 20 launches we've crawled running vinext.

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

Vibe Score 35 · 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 (13)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Email
Email forwarding Cloudflare Email Routing (2)
Transactional email Cloudflare Email
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite (2)
JavaScript library Nano Stores
Meta-framework vinext
UI library Lucide Icons
shadcn/ui
Analytics & Marketing
Analytics Google Analytics (4)
SEO Google Search Console
Tag management Google Tag Manager medium

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Green hosted
Host runs on renewable energy. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 15 Jul 2026 to 14 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
2 days
Registered Jul 2026 · Dynadot Inc

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=reject Reject (strict). Strong.
?
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 (3)

Cookies (3)
NameLifetimeDetected as
NEXT_LOCALE session -
_ga 1y Google Analytics
_ga_J4Y0M3ES3P 1y Google Analytics

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)
Page title is 61 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

1199 ms Server response
8% Faster than peers
1152 ms Largest contentful paint
0.00 Cumulative layout shift
462 KB Page weight
38 KB Image weight
2 Third-party domains
0 Console errors
0 Failed requests

1 images: 1 oversized, 1 missing alt text

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
AI CSS signals +10
AI onboarding signals +5
AI writing signals +5
AI layout signals +5
Unfilled template placeholders +10

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

Blocks AI crawlers but publishes an llms.txt
llms.txt published
9 AI bots blocked in robots.txt
ai-train = no
search = yes
? ai-input (not declared)
? None advertised

Well-Known Files

robots.txt
sitemap.xml (4 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy-policy
Terms of Service
/terms-of-service
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
54% unique

Security Headers (0/6)

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

Build

2 JS files
1 CSS files
2 Third-party domains

App Manifest

PDF Brief
display: standalone 2 icons
theme #f8fafc
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.