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