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CAD快速看图 (CADReader) vs Autodesk Viewer: catalog facts
CAD快速看图 (CADReader)	Autodesk Viewer
Freemium Free to use, with a paid VIP membership and business licences for more features.	Free Free to use in the browser.
Windows, macOS, Android, iOS, Web	Web
Opens all DWG versions and Tianzheng drawings Measurement, comparison and text and table extraction	Opens many CAD formats, including DWG, RVT, STEP and SolidWorks files No software to install
Website and interface primarily in Chinese Many features require a VIP membership	Requires a WebGL-capable browser A viewer only, not an editor
Downloadable app, Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
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.