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Okular vs miro: catalog facts
Okular	miro
Free Free and open source under the GPL.	Free Free and open source under AGPL-3.0-only.
Windows, macOS, Linux	Windows, macOS, Linux
One viewer for a very wide range of document and comic formats Annotations are stored separately, so the original file is untouched	Keyboard controls with Vim-like bindings by default Dark mode for the interface and PDFs
Pulls in KDE libraries on non-KDE desktops It is a viewer and annotator, not a PDF editor	The documented Linux display backends are Wayland and X11.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: AGPL-3.0-only
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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