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Stirling PDF vs PDF Squeezer: catalog facts
Stirling PDF	PDF Squeezer
Freemium Free plan is $0/month with no card required (60+ tools, web/desktop/self-hosted, 500…	Paid Sold as a paid app; the homepage does not list the price.
Windows, macOS, Linux, Web, Self-hosted	Windows, macOS, iOS
55+ PDF tools covering signing, converting, merging, editing, OCR and redaction, chained in a stateful workspace with… Runs on Docker, bare metal, Kubernetes or as native desktop apps for Windows, macOS and Linux	Drag-and-drop compression with little setup Available on Mac, iOS and Windows
Open-core: SSO, external database, Google Drive integration, SAML and audit logs are gated behind paid Team or… Manual server setup needs Java 25+ plus LibreOffice and Tesseract for conversions and OCR	Focused on compression rather than general PDF editing Price not stated on the homepage
Self-hosted, Downloadable app, Web application, Hosted service	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.