PDFnoted - AI Review, Note & Export

Broad: PDF to Word/PPT free, human-friendly annotations, annotated export. Deep: AI compliance audit engine, 11 industries, 174 regulations, EU/US/China. Web & extension membership synced.

Productivity

Estimated origin: China

Added July 28, 2026 · Last analysed July 28, 2026 · via · 62% unique tagline

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Screenshot of PDFnoted - AI Review, Note & Export

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 28 July 2026; the live site may have changed since.

PDFnoted - AI Review, Note & Export looks production-ready overall, with a thorough launch checklist and clean crawl signals. Worth fixing first: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Product Hunt on July 28, 2026. The site is hosted on Alibaba (US) Technology Co. in Singapore, with a domain registered 1 week before launch. We've detected 6 technologies on this site, covering seo, DNS providers, business email, and web fonts. The stack includes Alibaba Cloud, Alibaba Mail, and Baidu Webmaster Tools.

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6.3

StackScope Score

Good

88/100 Launch Readiness

Launch ready

1/6 Security Headers

Poor

2/3 Legal

Partial

2/2 Crawl files

Complete

94/100 Performance

Fast

Vibe Score 45 · 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 (6)

Infrastructure

DNS	Alibaba Cloud
Server	nginx

Business email	Alibaba Mail (2)

Build & Framework

Font	Google Fonts

Analytics & Marketing

SEO	Baidu Webmaster Tools
	Bing Webmaster

Infrastructure

Network

ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN

AS45102 · SG

DNS

Alibaba Cloud

Authoritative nameserver

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 21 Jul 2026 to 19 Oct 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

9 days

Registered Jul 2026 · Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

Email Security

✓

SPF ~all Soft-fail (~all). Common and accepted.

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.

Storage (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

⚠

Custom title and meta description (partial) missing custom <title>

✓ Open Graph tags (title, image, description)

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Meta description is 216 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

1398 ms Server response

6% Faster than peers

1320 ms Largest contentful paint

0.03 Cumulative layout shift

772 KB Page weight

306 KB Image weight

3 Third-party domains

0 Console errors

0 Failed requests

⚠ 3 images: 2 oversized, 3 without width/height, 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?

Signal	Points
AI copy signals	+5
AI palette signals	+5
AI writing signals	+5
AI code-structure signals	+5
AI CSS 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

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (45 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy-web.html

? Terms of Service not detected

92% unique

Mentions:

Security Headers (1/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✓

X-Content-Type-Options

✗

Content-Security-Policy

✗

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Build

2 JS files

2 CSS files

3 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.