Sign in or create account

Enter your email — we'll send a one-time link. It signs you in, or creates your account if you're new. No password.

Confirm it's you

Changing how you sign in needs a fresh check. We've emailed a 6-digit code to .

Set up authenticator app

Scan this with your authenticator app (Google Authenticator, Authy, 1Password…), then enter the 6-digit code it shows to finish. You'll then be able to sign in with a code instead of waiting for an email. (Your email link keeps working as the fallback.)

Can't scan? Enter this key manually:

New Shared Project

Share this project

Plan & storage

End-to-end encryption is on every plan, including Free. Pro and Premium are subscriptions bought in Folio Writer for Mac or for iPhone and iPad through the App Store — sign in to the same account there and the storage follows. Nothing is sold on the web.

End-to-end encrypted project

The key never reaches the server. The decryption key is the last part of your link, after # — browsers never send that fragment with any request, so it is never transmitted and never stored on the server. Anyone holding the full link can open the project; the server itself cannot.

The server stores only ciphertext. Documents, the binder, and research files are sealed in your browser with AES-256-GCM before upload, and live co-editing runs through a blind relay that forwards sealed bytes it cannot read.

Everything readable happens on your device. Decryption runs client-side — in this tab or in the Mac and iOS apps. Preview and PDF typesetting run locally in the browser, and Download rebuilds the .folio decrypted here, so the native apps open it like any local project.

Keep the full link safe. If the part after # is lost, the contents can't be recovered — not even by the server. The owner can rotate the key any time under Share.

Read the full privacy statement

Your name

Shown on your cursor and your comments.

Editor

Monospace font
Font size
Line width
Appearance

The editor is monospaced — this sets its typeface and size (16 px unless you change it). A font that isn't installed on this device falls back to the system monospace. Composition mode has its own text size and width, set from inside the mode. Everything here is saved in this browser.

Project password

This shared project is password-protected.

Export

Title page

Shown on the exported title page — like the Mac and iOS apps' metadata. Saved with the project (its metadata YAML).

PDF and Word export need the Mac app (or pandoc) — download the .folio and compile there. Markdown/HTML export runs right here.