Annotate PDFs with rich notes and equations. Ask questions using your existing Codex or Claude Code account, with citations to relevant passages.
Take notes and ask AI questions while keeping your PDF in view.
Write block-based notes with rich formatting, code, and LaTeX equations. Attach them to highlights or places on the page.
Get AI answers about your PDF, with citations you can follow back to the original text whenever you want more context.
Connect to your Codex or Claude Code and choose an available model.
Read and take notes offline. Export highlights, notes, and chats as Markdown or JSON.
Set up document chat, then prepare each PDF before asking questions.
Feature illustrations show example content and workflows.
Your PDF file stays on your device. Your chosen AI answers online using relevant passages, your question, attached selections, and recent chat context.
On your device
Online
Walk through your first cited answer Understand the data flow
Yes. Open PDFs, search, highlight, and write notes without a provider connection or model downloads. Chat has a separate, optional setup.
No. Platypus manages the Python runtime and models through Settings → AI chat. You will need an eligible device, disk space, and an internet connection for the initial downloads. Check the requirements.
Platypus connects to the Codex and Claude Code command-line tools installed on your device. Each tool needs its own working sign-in and provider access. Requests use that provider’s allowance. API-key connections and other providers are planned.
Answers can be wrong, and a citation can point to text that does not support the exact claim. Table-cell retrieval is currently unavailable. Always inspect the source. Read the known limitations.
Yes. Settings → Saved data saves highlights, notes, and chats as Markdown or JSON, even when an original PDF is missing. Exports are readable files; Platypus cannot import them to restore the app. Back up your profile and PDFs separately. Read the export and backup guide.