Hero Intro

This website is made in Japan and published from Japan for readers around the world. All content is written in simple English with a neutral and globally fair perspective.

Boxcryptor is a local and cloud file encryption software used by personal users on Windows and macOS. It provides Zero-Knowledge encrypted folder protection, seamless integration with major cloud storage providers, secure file sharing with authorized recipients, password-based access control, and multi-device synchronization, all within a virtual drive interface that works alongside existing storage services. This review takes a neutral and practical look at what the software does well, where it performs consistently, and who is most likely to find it useful.

Boxcryptor is a European encryption tool designed around a specific use case: adding a Zero-Knowledge encryption layer to cloud storage services that users already rely on. Rather than replacing Dropbox, Google Drive, OneDrive, or similar services, Boxcryptor sits between the user and the cloud provider — encrypting files locally before they are uploaded, so the cloud service stores only the encrypted versions and cannot access the original contents.

For users who want to continue using their preferred cloud storage while adding a layer of encryption that keeps the provider from accessing their files, Boxcryptor offers a practical integration-first approach. This review examines how the software performs across its core functions and which users are best served by it.

Try Boxcryptor

What Is Boxcryptor

Boxcryptor is a paid file encryption software for Windows and macOS that adds a Zero-Knowledge encryption layer to local folders and cloud storage services. It creates a virtual encrypted drive that maps to the user’s existing cloud-synced or local folders. Files saved to this virtual drive are encrypted on the user’s device before being passed to the underlying storage location — whether that is a local drive or a cloud-synced folder.

The Zero-Knowledge model means that Boxcryptor holds no encryption keys and cannot access file contents. Cloud providers storing the encrypted data also cannot read the files, as only the encrypted versions are uploaded. Decryption happens locally on the user’s device using the account password.

Boxcryptor supports a broad range of cloud storage providers including Dropbox, Google Drive, OneDrive, Box, and others, as well as local and network-attached storage. It is developed by a German company and is designed for users who want European-standard privacy practices applied to their cloud file storage.

Note: Dropbox acquired Boxcryptor’s technology in late 2022. Users considering Boxcryptor should check the official website for the current availability of personal plans and supported platforms before purchasing.

Key Features

Zero-Knowledge Encryption: All files are encrypted on the user’s device before being written to storage or synced to the cloud. Boxcryptor does not hold encryption keys and has no technical access to file contents. The cloud provider storing the encrypted files similarly cannot read their contents.

Cloud Storage Integration: Boxcryptor integrates directly with major cloud storage services, adding an encryption layer to the user’s existing cloud folders. The cloud service continues to handle sync and storage as normal, while Boxcryptor handles encryption and decryption transparently on the local device.

Encrypted Local Folders: In addition to cloud-connected storage, Boxcryptor can encrypt local folders on the physical drive, providing a protected storage area for sensitive files that are not synced to any cloud service.

Virtual Drive Interface: When Boxcryptor is active, encrypted folders appear as a virtual drive in Windows Explorer or macOS Finder. Files can be opened, edited, and saved directly within this drive, and encryption is applied automatically without requiring manual steps for each file.

Secure Sharing: Boxcryptor supports sharing encrypted files with other Boxcryptor users by adding them as authorized recipients. The recipient can access the shared encrypted files using their own account credentials without the sender sharing their password.

Multi-Device Sync: Encrypted files sync across all devices where Boxcryptor is installed and signed into the same account, maintaining consistent encrypted access across the user’s full device set.

Filename Encryption: Boxcryptor can encrypt file names in addition to file contents, preventing the cloud provider from inferring information about stored files from their names or directory structure.

Performance Review

Encryption and Virtual Drive Performance In tested scenarios, the virtual drive appeared reliably after sign-in and files within encrypted folders were accessible without noticeable delay during normal use. Encryption and decryption happened transparently during file open and save operations, and the process did not interrupt the normal workflow for everyday document and data file types.

Cloud Sync Integration In tested scenarios, Boxcryptor’s integration with Dropbox and Google Drive functioned as described. Files saved to the virtual drive were encrypted before being passed to the cloud-synced folder, and the cloud provider’s sync client uploaded only the encrypted versions. Changes to files triggered re-encryption and re-sync of the affected files without requiring manual steps.

Filename Encryption In tested scenarios, enabling filename encryption correctly obscured file and folder names as seen from the cloud provider’s interface. The original names remained visible within the Boxcryptor virtual drive after authentication, while the cloud storage interface showed only the encrypted name strings.

Secure Sharing In tested scenarios, the recipient-based sharing model worked reliably. Adding a recipient’s Boxcryptor account to a shared folder allowed them to access the encrypted contents using their own credentials. Access was correctly restricted to listed recipients, and the shared files remained encrypted and inaccessible to other parties.

Pricing & Plans

Boxcryptor has historically offered free personal plans with limited cloud provider support, and paid personal plans with broader provider compatibility and additional features. Following Dropbox’s acquisition of Boxcryptor’s technology in late 2022, the availability of personal plans may have changed. Users should check the official Boxcryptor website for current plan details and availability before making a purchase decision.

Pricing for available plans and any active promotions are listed on the official Boxcryptor website.

Use Cases

Cloud Storage Privacy: Users who store files in Dropbox, Google Drive, OneDrive, or similar services and want to prevent the cloud provider from accessing their file contents can use Boxcryptor to add an independent encryption layer without changing their storage provider.

Zero-Knowledge File Protection: Users who want their encryption keys to remain entirely under their own control — with no access by Boxcryptor or the cloud provider — will find the Zero-Knowledge model directly suited to that requirement.

Encrypted File Sharing: Users who need to share sensitive files with colleagues or contacts securely can use Boxcryptor’s recipient-based sharing to grant access to encrypted files without exchanging passwords directly.

Local and Cloud Combined Protection: Users who want consistent Zero-Knowledge encryption across both their local drive and their cloud-synced folders can use Boxcryptor to manage both within a single application and virtual drive interface.

Pros and Cons

Pros:

  • Zero-Knowledge architecture keeps file contents inaccessible to both Boxcryptor and the cloud storage provider
  • Integrates with a wide range of major cloud storage services without requiring a change of provider
  • Filename encryption adds an additional layer of privacy beyond content encryption alone
  • Recipient-based secure sharing avoids the need to exchange passwords directly
  • European development with privacy practices aligned with GDPR standards

Cons:

  • Following Dropbox’s acquisition of Boxcryptor’s technology in late 2022, personal plan availability should be verified before purchasing
  • Requires a Boxcryptor account for both sender and recipient in the secure sharing workflow
  • Does not provide full disk encryption, credential management, or VPN — it is a file and folder encryption tool
  • Password recovery is not possible without account access; a forgotten password means loss of access to encrypted files

Who Should Consider This Software

Boxcryptor is a practical choice for personal users who rely on cloud storage services and want to add a Zero-Knowledge encryption layer without switching providers or changing their storage workflow. It is particularly suited to users who store sensitive documents in services like Dropbox or Google Drive and want assurance that the cloud provider cannot access their file contents.

It also suits users who regularly share sensitive files with others and want a structured, account-based sharing model that avoids password exchange. The filename encryption option adds value for users who want to minimize what the cloud provider can infer even from file metadata.

Users who are evaluating Boxcryptor should check the current plan availability on the official website given the ownership changes that occurred in late 2022. Those looking for a free, open-source alternative with similar cloud encryption functionality may also wish to evaluate Cryptomator alongside Boxcryptor.

Final Verdict

Boxcryptor is a well-designed Zero-Knowledge encryption tool that adds a meaningful privacy layer to major cloud storage services without disrupting the user’s existing storage workflow. Its virtual drive interface, cloud provider compatibility, and recipient-based sharing model make it a practical and user-friendly option for personal users who want cloud file encryption without managing complex technical setups.

Users considering Boxcryptor should verify current plan availability through the official website. For those for whom it remains available, it delivers reliable Zero-Knowledge encryption with a clean integration approach that keeps the protection workflow transparent during everyday use.

Try Boxcryptor

Previous: https://kawaii-encryption-guide.com/proton-drive-review