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PDF Mate

PDF Mate is a free Chrome & Edge extension for offline PDF editing. Merge, split, rotate, delete, reorder, and convert PDF pages without uploading to any server.

Productivity
China Estimated origin: China

Added April 29, 2026 · Last analysed April 29, 2026 · via · 57% unique tagline

Own this Launch?
Screenshot of PDF Mate

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

PDF Mate covers some of the launch checklist, with clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Product Hunt on April 29, 2026. The site is hosted on GitHub Pages and served through Fastly, with a domain registered 9 months before launch. Our crawler found 6 technologies on this site, covering analytics, CDN, DNS providers, and business email. The stack includes Alibaba Cloud, Fastly, and GitHub Pages.

It's also running the same core stack as 1,758 other launches.

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

5.2
StackScope Score
Fair
64/100 Launch Readiness
Well prepared
0/6 Security Headers
Poor
2/3 Legal
Partial
2/2 Crawl files
Complete
Vibe Score 58 · Many 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
CDN Fastly (2)
DNS Alibaba Cloud
Hosting GitHub Pages (2)
Email
Business email QQ Mail (2)
Analytics & Marketing
Analytics Microsoft Clarity
SEO Google Search Console

Infrastructure

Network
FASTLY - Fastly, Inc., US
AS54113 · US
DNS
Alibaba Cloud
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 14 Mar 2026 to 12 Jun 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 year
Registered Jul 2025 · 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
✓ Responsive viewport meta tag
✓ Favicon present
✓ Semantic HTML (nav, main, article)
⚠
Meta description is 161 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.
- Open Graph tags (title, image, description)
- Canonical URL declared
- Twitter card meta tags

Vibe Score Breakdown How?

SignalPoints
Placeholder branding +10
AI copy signals +5
AI writing signals +5
AI iconography signals +3
AI code-structure signals +5

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 (1 URLs)
✗ security.txt
✗ llms.txt
✗ ads.txt
✗ humans.txt

Legal

✓ Privacy Policy
/privacy
? Terms of Service not detected
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).

Security Headers (0/6)

✗
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)

Performance

291ms response time
Faster than 57% of sites
2 third-party domains loaded

Build

2 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.