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CopyTranslator vs LunaTranslator: catalog facts
CopyTranslator	LunaTranslator
Free Free and open source under GPL v2.	Free Free and open source under the GPL-3.0 licence.
Windows	Windows
Translates automatically on copy Fixes broken line breaks from PDF text	Text hooking works with a very wide range of visual novels OCR and clipboard modes for anything hooking cannot reach
Project website is mainly in Chinese Translation quality depends on the online engines it uses	Windows only Much of the community support is in Chinese
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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