How your writing
is stored.

Account-based saving

Sign in with ChatGPT to keep your book projects, writing, library notes, reviews, and preferences tied to your account. Signing in with the same account lets you return on another device. Each book has its own library and writing. Other writers cannot access your projects or uploaded files through their accounts.

Your library and original files

Library can hold online links, standalone notes, and your own uploaded material. Supported originals are PDF, JPG, PNG, WebP, DOCX, TXT, and Markdown. Images and PDFs can be opened for review; Word documents can be downloaded. Uploads do not automatically transcribe handwriting or extract searchable text from scans. Your titles and notes are searchable.

Original files are stored separately from the studio’s text records and served only after account and book authorization checks. Uploading a file does not publish it on this website or send it to an AI service. This version has no collaboration or public manuscript sharing.

AI features

Pro AI features are currently inactive. Basic writing prompts and library uploads work without AI generation. If enhanced prompt generation is activated in a future release, the studio will request consent before sending book context, selected writing excerpts, and prompt history for generation.

Device copies and conflicts

The studio keeps a recovery copy of your text records in your browser as well as saving to your account. Original uploaded files require a connection to open. Avoid shared browsers, or sign out and clear the site’s browser data when finished. Conflicting saves stop and ask you to back up and reload; the studio does not silently combine conflicting drafts.

Your backups and exports

A full JSON backup includes all book projects, writing, library notes, file references, settings, and prompt history. Original uploaded file bytes are not included in JSON backups: download originals individually from Library for your own offline copy. A text export includes manuscript entries. Restoring a full account backup replaces all book projects after confirmation and downloads a safety copy first. Older single-book backups import as a new project.

Site analytics

We collect first-party usage counts for visits, studio opens, and successful saves to improve this app. Analytics do not collect your writing, book titles, library content, names, email addresses, IP addresses, or full browsing URLs. Random browser and session identifiers are stored locally; hashed identifiers and usage events are kept for up to 90 days. A visit ends after 30 minutes of inactivity. Counts are approximate: different devices count separately, and cleared browser storage starts a new identity. The owner’s activity is excluded.

The owner can see aggregate statistics and the number of saved studios. First-save dates for new studios are retained with account records; existing studios are included in the total but are not backdated as new signups. We respect browser Do Not Track and Global Privacy Control signals.

Current limits

You can keep up to 20 book projects. Text, notes, settings, and prompt history share a 4 MB account limit. Original files have a separate limit of 200 MB or 1,000 files per account, with 10 MB per file and 20 files per upload batch.

Your account data is stored by the hosting infrastructure. This is not end-to-end encrypted storage.