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

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