Skip to main content

Built by makers, shipped in public

Sign in

Stirling PDF vs PDNob

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 PDNob
DetailStirling PDF logo Stirling PDFPDNob logo PDNob
What it doesA free, private PDF editor you can run on any infrastructure. AI-powered PDF editor for Windows and Mac with OCR, conversion, and editing capabilities
StageNot given Established
FoundedNot given 2007
Based inUS HK
Pricing modelFreemium Freemium
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 Lifetime License for $64.99 USD. Free version with full feature trial available.
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
  • AI-powered OCR with 16+ language support
  • PDF editing with text and image manipulation
  • Batch conversion to 30+ formats
  • Chat with PDF using AI
  • Fillable form creation and e-signing
  • PDF annotation with 100+ shapes
  • Page organization and batch processing
  • Screen recording and screenshot tools
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
  • Self-developed PDFium engine opens 100+ page PDFs in 1 second with no lag or crashes
  • Batch process up to 1 million files at once without size limits
  • Source-backed AI answers with clickable page references for verification
  • Free lifetime upgrades with no subscription required
Community votes00
DR (Domain Rating by Ahrefs)61 no change since last check73 no change since last check
Trust Flow (Majestic)1524
Citation Flow (Majestic)4055
Referring domains (Majestic)8724682

6 details filled in for both companies.

More alternatives to Stirling PDF More alternatives to PDNob

Ask us