Internxt offers encrypted cloud storage using zero-knowledge technology, with additional products listed for VPN, antivirus, cleaner, and mail.
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24 alternativesFileShot.io
FileShot’s repository provides a browser based AES-256-GCM zero knowledge encryption library for client side file sharing.
About FileShot.io
FileShotZKE is an open-source JavaScript library for client-side file encryption. It is published as a GitHub repository and provides the zero-knowledge encryption used by FileShot.io. All encryption runs in the browser using the Web Crypto API, with AES-256-GCM and no external dependencies.
With the library you can encrypt a File or Blob before upload so the server receives only ciphertext. It supports two modes: URL-fragment mode, where a random 256-bit key is kept in the share link fragment that browsers do not send to servers, and password mode, where the key is derived with Argon2id and the recipient decrypts in the browser. The repository includes zero-knowledge.js, a standalone demo.html that works offline, and functions for encrypting and decrypting with original filename and type preserved.
It suits developers who want to add client-side encrypted file sharing to a web project, and technical users who want to review how the encryption works.
Key features
- Client-side AES-256-GCM encryption in the browser
- URL-fragment mode keeps key out of server requests
- Password mode derives keys with Argon2id
- Supports legacy PBKDF2-SHA256 files for backward compatibility
- Standalone demo works offline with no server
- No dependencies, uses browser-native Web Crypto API
Best for: Developers who want to add browser-based zero-knowledge file encryption to web projects.
Good for
- Server receives only ciphertext, never key or plaintext
- Open source with MIT license and no dependencies
- Includes offline demo and in-browser test files
Watch out for
- Requires modern browser with Web Crypto API support
FileShot.io at a glance
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
FileShot.io alternatives
Tools and sites you could use instead, ranked by how closely they match.
NordLocker provides encrypted cloud storage and a private file vault for securing, backing up, accessing, and sharing files across devices.
Koofr provides web, desktop, and mobile file access, supports WebDAV and Rclone, and can connect Dropbox, Google Drive, and OneDrive accounts.
Tuta is an email service whose repository says it encrypts emails, contacts, and calendar entries across users’ devices.
Open source
24 alternatives
Share one-time secrets through a browser-based platform that encrypts them with AES before sharing.
Open source
24 alternativesPopular in Encryption & Private Sharing
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FileShot.io FAQ
What is FileShotZKE?
FileShotZKE is an open-source browser library for client-side AES-256-GCM file encryption used by FileShot.io.
How does FileShot's zero-knowledge model work?
Files are encrypted in the browser and only ciphertext is uploaded. In URL-fragment mode the key stays in the URL fragment, which browsers do not send to the server.
What key derivation does password mode use?
New files use Argon2id with 64 MB memory, 2 iterations, and parallelism of 1. Files encrypted earlier with PBKDF2-SHA256 remain decryptable.
Which browsers are supported?
Chrome 37+, Firefox 34+, Safari 11+, Edge 12+, and Opera 24+ with no polyfills needed.
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