Your files. Nobody else's business.

Keep your secrets
actually secret

A private writing and file encryption suite that runs entirely in your browser. Nothing is sent anywhere. Ever.

AES-256-GCM
PBKDF2-SHA-512
600k+ iterations
Zero network calls
No accounts
No telemetry
Works offline
Cipher AES-256-GCM
Key derivation PBKDF2-SHA-512
Salt 32 bytes random
IV 16 bytes random
Auth tag 128-bit GCM
Tool 01
Encrypted Writer
A minimal word processor that saves your documents as encrypted .vault files. Write anything, lock it with a passphrase, store it safely anywhere.
Rich text editing, headings, lists, code blocks
Export to encrypted .vault format
Import and continue editing anytime
Also exports to PDF, DOCX, HTML, plain text
Focus mode and light/dark toggle
Open writer →
Tool 02
File Encryptor
Lock any file format with the same encryption used by the writer. MP4, ZIP, JPG, PDF, binary, whatever. Output keeps the original extension visible so you know what is inside.
Works on any file type or size
Output named e.g. video.vaultmp4
Original filename embedded in encrypted header
Unique iteration count randomised per file
Decrypt and restore original bytes exactly
Open encryptor →
How it works
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Pick your tool
Use the Writer for documents and notes. Use the Encryptor for any other file type. Both run entirely in your browser tab with no server, no upload, and no account required.
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Set a passphrase
Your key is derived using PBKDF2-SHA-512 with 600,000 or more iterations. A fresh random salt and IV are generated every time, so the same file encrypted twice produces completely different output.
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Store anywhere
The encrypted output is safe to put in Dropbox, Google Drive, iCloud, or any cloud service. Without your passphrase, the file is indistinguishable from random noise. Decrypt it here whenever you need it.