Privacy First
Encrypted Notes built for privacy
Write in text, Markdown, or HTML. Organise into folders. Share securely — all encrypted end-to-end, zero‑knowledge.
Write in text, Markdown, or HTML. Organise into folders. Share securely — all encrypted end-to-end, zero‑knowledge.
Built on the same zero‑knowledge architecture as the rest of HashThat — your notes stay private, always.
Every note — its title, content, and metadata — is encrypted using keys secured by your Master Password. Nobody but you can read them.
Your notes never leave your device unencrypted. Decryption happens locally — we have no access to your content, ever.
Group notes into folders to keep things tidy. Folders are encrypted too — even folder names are private.
Share notes with other HashThat users via our zero-knowledge encrypted sharing algorithm. Each recipient gets their own encrypted copy — no plaintext ever touches our servers.
Decide exactly what shared recipients can do: view only, edit, or re-share. Set validity windows and revoke access at any time.
Write in plain text, Markdown, or HTML. Switch formats per note — structure your content however works best for you.
Every note can use a different format. Quick plain-text for fast thoughts, Markdown for structured writing, or full HTML for custom layouts — all stored encrypted.
Plain Text
Quick thoughts, to-do lists, or anything that doesn't need formatting. Fast and distraction-free.
Markdown
Headings, bold, lists, code blocks, and more — rendered beautifully while keeping the source editable.
HTML
Full HTML support for rich, custom-formatted notes. Ideal for technical users and complex layouts.
Share a note with any HashThat user using our zero-knowledge sharing algorithm. The note is re-encrypted with per-recipient keys — no plaintext ever leaves your device.
View
Recipient can read the note on any of their devices.
Edit
Allow the recipient to modify the note's content.
Reshare
Permit the recipient to share with others you approve (off by default).
Valid From / Until
Define a start and expiry date for shared access.
Revoke
Instantly remove a recipient's access at any time.
Organise notes into encrypted folders. Whether you have 5 notes or 500, folders keep things structured — and even the folder names are encrypted, so your organisational system stays private too.
Yes. Every note — including its title, content, and folder name — is encrypted using keys derived from your Master Password. We cannot read your notes on our servers.
When you share a note, it is re-encrypted with a key unique to that recipient before being transmitted. The plaintext never leaves your device. You can set permissions, validity dates, and revoke access at any time.
Each note can be written in plain text, Markdown, or HTML. You choose the format per note — great for mixing quick jots with richly formatted documents.
Yes. Folder names are encrypted alongside your note content — your organisational structure is just as private as the notes themselves.
Because of the zero-knowledge model, we cannot recover your data if you lose your Master Password. We strongly recommend enabling account recovery options in your settings.
Start free. Upgrade anytime. Your notes are encrypted, organised, and under your control.