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Calibre vs Calibre-Web Automated: catalog facts
Calibre	Calibre-Web Automated
Free Free and open source, funded by donations.	Free Free to download and run on your own server.
Windows, macOS, Linux	Web, Self-hosted
Converts between all the major ebook formats, including for Kindle Fetches metadata and covers from the internet automatically	Automatic ingest, conversion and metadata handling Docker and Kubernetes deployment files
The interface is dense and has accumulated two decades of features It will not remove DRM; that requires third-party plug-ins with their own legal questions	Requires running your own server Tied to the Calibre library format
Downloadable app	Self-hosted
Open source	Closed source
License: GPL-3.0	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.