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MergePDF

Merge, split, rotate, and rearrange PDF pages entirely in your browser. No uploads, no sign-up, no ads.

Productivity

Added August 19, 2026 · Last analysed August 19, 2026 · via

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Screenshot of MergePDF

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 19 August 2026; the live site may have changed since.

MergePDF is early-stage. Visible gaps: missing several security headers, incomplete legal pages, and no sitemap.

Launched on Product Hunt on August 19, 2026. The site is hosted on Vercel. We've detected 7 technologies on this site, covering ui library, CSS frameworks, frameworks, and hosting. The stack includes Next.js, React, and Tailwind CSS.

It's on one of the most common stacks we track, shared by 13,532 launches.

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

3.8
StackScope Score
Poor
78/100 Launch Readiness
Well prepared
1/6 Security Headers
Poor
0/3 Legal
Missing
1/2 Crawl files
Partial
100/100 Performance
Fast
Vibe Score 15 · Few 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
Hosting Vercel
Security HSTS
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (5)
UI library Lucide Icons
shadcn/ui

Infrastructure

Network
AMAZON-02 - Amazon.com, Inc., US
AS16509 · US
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
Google Trust Services
Valid 28 Jun 2026 to 26 Sep 2026
Certificate as captured in this snapshot, not a live check.

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.

Storage (0)

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

Readiness Breakdown How?

✓ Custom title and meta description
⚠
Open Graph tags (title, image, description) (partial) missing og:image
✓ Twitter card meta tags
✓ Responsive viewport meta tag
✓ Favicon present
✓ Semantic HTML (nav, main, article)
⚠
Page title is 70 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.
⚠
Meta description is 217 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.
- Canonical URL declared

Performance How?

491 ms Server response
34% Faster than peers
428 ms Largest contentful paint
0.00 Cumulative layout shift
275 KB Page weight
0 Console errors
0 Failed requests

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 writing 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
✗ security.txt
✗ llms.txt
✗ ads.txt
✗ humans.txt

Legal

? Privacy Policy not detected
? Terms of Service not detected
Detection works best on English language sites.

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

✓ Code splitting
10 JS files
1 CSS files
0 Third-party domains
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.