Files automatically vanish after 24 hours or after a set number of downloads. 2. SwissTransfer
Maximizing security requires more than just picking the right platform. Implement these operational habits to keep your technical drawings secure:
To satisfy your search intent correctly: Files automatically vanish after 24 hours or after
| If you need to... | Recommended tool(s) | |:------------------|:---------------------| | Send a single large file (up to 50 GB) to a client | SwissTransfer | | Send a huge file with no size limit (e.g., 200 GB point cloud) | Smash or Transfer.it | | Share sensitive architectural plans requiring maximum privacy | QuicShare (direct P2P) or PrivyDrop (browser‑based) | | Transfer files quickly within your office network | LocalSend | | Send files under 10 GB with strong end‑to‑end encryption | Wormhole or Send Anywhere | | Prefer an open‑source, EU‑based, zero‑knowledge service | Internxt Send | | Have your own server and need a self‑hosted enterprise solution | FileSender 3.0 or ProjectSend | | Share files anonymously without any account or personal info | EasyTransfer or OnionShare |
AutoCAD itself offers basic password protection. When you save a file, click "Tools" in the Save dialog, select "Security Options", and enter a password. However, this only encrypts the drawing content, not the file name, and compatibility across different AutoCAD versions can be problematic. For external file transfers, compressing and encrypting with WinRAR or 7-Zip is generally recommended as the more robust and portable solution. Implement these operational habits to keep your technical
User-controlled end-to-end encryption. The user holds the master decryption key.
: Complete privacy. Files are encrypted on your device before being uploaded, meaning nobody—not even the service provider—can access the contents without your permission. 2. Wormhole Free Transfer Limit : Up to 10 GB. However, this only encrypts the drawing content, not
Based in Geneva and funded by Swiss hosting provider Infomaniak, SwissTransfer offers an impressive for free, with no registration and no advertisements . You can set link validity from 1 to 30 days, password‑protect your files, and send to up to 20 recipients at once. Files are encrypted in transit with AES‑GCM and at rest with double LUKS plus AES‑256, all hosted in ISO 27001‑certified data centers. The only practical limitation: above 10 GB, recipients must download files one by one rather than as a single package.