Most AutoCAD users already have access to these via work or personal accounts. 15GB (Google) or 5GB (Microsoft). Security: Standard TLS/SSL encryption.
PrivyDrop is an open-source, free, and secure P2P file transfer tool with no size limits, no registration, and support for resumable transfers. Based on WebRTC for end-to-end encryption, its code is completely transparent and auditable. Files transfer directly between browsers with no server-side file relay — the backend only handles room coordination and signaling. You can share rooms via link or QR code, and multiple receivers can download the same files. The tool also supports Chrome direct-to-disk streaming for very large files.
An AutoCAD drawing is often not a standalone entity. It can reference multiple other drawings (known as xrefs), plot style tables (CTB or STB), and custom fonts (SHX or TTF). If you just send the main DWG file, the recipient will get an incomplete drawing with missing elements. Most AutoCAD users already have access to these
or compressed project files securely without a subscription, several specialized services offer high capacity and encryption in 2026.
(Free tier: 5 GB storage)
To satisfy your search intent correctly:
Intercepted software files can be injected with malware or altered maliciously before they reach the recipient. PrivyDrop is an open-source, free, and secure P2P
(Free, up to 10 GB)
Allows sharing large files securely via links or QR codes, with high, flexible transfer limits. 3. Filemail (Best for Large Individual Files) You can share rooms via link or QR
These steps can shrink a 300 MB drawing to 40 MB without losing data.