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JSON Formatter vs Dadroit JSON Viewer: catalog facts
JSON Formatter	Dadroit JSON Viewer
Free Free and open source.	Freemium Proprietary software; see the developer's site for current editions and licence terms.
Browser extension	Windows
Collapsible trees with indent guides and syntax highlighting Toggle between raw and parsed JSON	Dedicated application for viewing JSON data files Installable on Windows through Scoop
Built as a Chrome extension; other browsers are not mentioned Viewing only, not a JSON editor	Proprietary, closed source Limited public detail on features and pricing in the available information
Browser extension	Downloadable app
Open source	Closed source
License not stated	License: Proprietary
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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