Stirling PDF vs PDF Smart Kit

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 PDF Smart Kit
Detail	Stirling PDF	PDF Smart Kit
What it does	A free, private PDF editor you can run on any infrastructure.	Browser-based PDF tools that process files locally without uploading or requiring an account
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	GB
Pricing model	Freemium	Freemium
Pricing	Free: $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	Free tools available. Ad-free plans: Basic (1 browser slot), Premium (2-20 browser slots), Business (custom arrangements). Prices in GBP with monthly or annual billing through Stripe. Annual subscriptions offer 40% discount.
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 into one document Compress PDF file size for email and storage Split PDF by page range or extract selected pages Convert PDF to Word with editable text Convert images (JPG, PNG) to PDF Unlock password-protected PDFs OCR to make scans searchable Add visible signatures and watermarks Redact sensitive content permanently Process up to 30 files and 250 MB total
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	No file upload to servers—all processing happens locally in your browser No account registration required to use any tool 30 tools with consistent workflow in one place Works on mobile browsers and all devices Download results immediately without storage or cloud account
Community votes	0	0
DR (Domain Rating by Ahrefs)	63 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	15	0
Citation Flow (Majestic)	40	0
Referring domains (Majestic)	872	0

6 details filled in for both companies.

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