Paper

Paper is a private, local-first PDF editor that runs entirely in your browser. Open one or more PDFs, rearrange and clean up their pages, annotate and sign them, and export a single flattened file. Nothing is ever uploaded, and no account is needed.

Production: https://pdf.gautamtata.com (also https://paper-pdf-editor.vercel.app) · Source: https://github.com/gautamtata/paper-pdf-editor

Privacy model

• Every operation (parsing, rendering, editing, signing, exporting) happens on your device in client-side JavaScript. The deployed app is static assets only: there are no route handlers, server actions, or upload endpoints.
• The only persistence is your browser's IndexedDB: recent documents, the autosaved workspace, and the signature vault.
• "Clear all local data" wipes everything Paper has stored and returns you to a clean slate.

Features

• Open and merge PDFs (drag-and-drop or file picker)
• Delete, reorder, and rotate pages
• Annotate with text, pen, highlight, and rectangle tools
• Sign by drawing, typing, or uploading an image, with a local signature vault for reuse
• Export a flattened PDF with all edits applied
• Autosave and reload the workspace between sessions

Scripts

Paper uses Bun. Install dependencies with bun install; a postinstall hook copies the pdf.js worker into public/.

Script	What it does
bun run dev	Start the Next.js dev server
bun run build	Production build
bun run test	Unit tests (Vitest)
bun run e2e	End-to-end tests (Playwright, in e2e/)
bun run typecheck	tsc --noEmit
bun run lint	ESLint

Set PLAYWRIGHT_BASE_URL=https://... to run the e2e suite against a deployed URL instead of a local dev server.

Deployment

Deployed to Vercel with framework auto-detection and no environment variables or integrations.

The design spec and implementation plan live in docs/superpowers/.