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Stirling PDF vs PDFZippy

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Stirling PDF compared with PDFZippy
DetailStirling PDF logo Stirling PDFPDFZippy logo PDFZippy
What it doesA free, private PDF editor you can run on any infrastructure. Free online PDF tools that run entirely in your browser with no uploads, no sign-up, and no watermarks
StageNot given Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFreemium Free
PricingFree: $0/month includes 60+ PDF tools, web/desktop/self-hosted access, open-source editor, and 1,000 monthly credits. Team: $99/month for 100 users, includes everything in Free plus single sign-on, team workspace, and central control. Enterprise: Custom pricing for regulated and air-gapped deploymen Not given
Key features
  • PDF reader with lightning-fast reading
  • 60+ PDF editing tools
  • OCR to read scanned pages
  • Classification and tagging
  • Signature validation
  • PDF redaction
  • Compression
  • Routing to multiple destinations
  • API for programmatic access
  • Connectors for tool integration
  • Merge multiple PDFs in custom order
  • Split PDFs into separate pages or files
  • Compress PDFs while maintaining quality
  • Convert between PDF and Word, Excel, PowerPoint, JPG, HTML
  • Extract text from scanned PDFs with OCR
  • Add watermarks, page numbers, and signatures
  • Scan documents with camera to PDF
  • AI-powered PDF summarization
  • Password protection with AES-256 encryption
  • Convert PDFs to PDF/A for long-term archiving
What makes it different
  • Completely free editor forever with no per-seat licensing
  • Run on any infrastructure with files staying yours
  • Process thousands of PDFs with AI-powered automation
  • Every action logged and recorded for compliance
  • All tools run 100% in your browser with no server uploads
  • Completely free with no sign-up, account, email or watermarks required
  • Mobile-friendly interface works on phones, tablets and desktop
  • Advanced features built entirely on-device including PDF/A conversion and translation
  • Privacy-first design ensures files never leave your device
Community votes00
DR (Domain Rating by Ahrefs)61 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)150
Citation Flow (Majestic)408
Referring domains (Majestic)8722

4 details filled in for both companies.

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