Stirling PDF vs EPUB Toolset

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 EPUB Toolset
Detail	Stirling PDF	EPUB Toolset
What it does	A free, private PDF editor you can run on any infrastructure.	Browser-based EPUB workspace for viewing, editing, and extracting DRM-free ebook files locally
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Free
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	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	EPUB viewer for reading chapters and inspecting publication structure Metadata editor to modify title, authors, language, publisher, description, and subjects Cover editor to replace publication artwork Extract chapters to Markdown format with metadata and image references Extract chapters to plain UTF-8 text Browser-local file processing with no server upload Blocks external resources and publication scripts by default Supports EPUB 2 and EPUB 3 formats
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	Local browser processing keeps your ebook file private and offline Non-destructive editing preserves original files while creating new versions Focused single-task tools instead of complex full-featured desktop software Clear compatibility limits and honest support boundaries documented
Community votes	0	0
DR (Domain Rating by Ahrefs)	61 no change since last check	3 no change since last check
Trust Flow (Majestic)	15	6
Citation Flow (Majestic)	40	27
Referring domains (Majestic)	872	31

4 details filled in for both companies.

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