AI Doc Sidekick

Split large PDFs into model-sized chunks — without uploading a thing.

AI Doc Sidekick is a privacy-first PDF chunker for frontier AI models. Drop in a long document and it produces a ZIP of correctly-sized chunks plus a CLAUDE.md index file you can hand straight to Claude, Gemini, or any other long-context model. Your PDF never leaves the browser. All splitting, token counting, and ZIP packaging happens client-side. The companion Worker is stateless — it serves only model metadata and never sees document bytes. Tuned for 2k-token overlap between chunks, granular by page boundary, and ready for whichever model you choose. Includes a built-in MCP (Model Context Protocol) server for agent integrations.

Launch AI Doc Sidekick Open directly ↗