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PDF24 Tools vs Sejda PDF: catalog facts
PDF24 Tools	Sejda PDF
Free Free to use and supported by advertising.	Freemium A limited free tier is available. Paid plans remove the limits.
Web, Browser extension	Windows, macOS, Linux, Web
No registration, limits or watermarks Wide range of PDF tools	Desktop version processes files entirely locally Online files are deleted automatically after a short period
Files are uploaded to PDF24's servers for processing Shows advertising	Free use is limited to a few tasks per hour and small documents Closed source
Web application, Browser extension	Web application, Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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