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Gradia vs Xnapper: catalog facts
Gradia	Xnapper
Free Free and open source.	Freemium Free to use with a watermark; a one-time payment removes it.
Linux	macOS
Adds backgrounds and framing to screenshots Annotation tools in the same app	Automatic background and balancing for presentable screenshots One-click redaction of emails, card numbers and API keys
Linux and GNOME focused Styles existing images rather than taking captures with many options	Free version adds a watermark Cloud upload is not available yet
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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