DeepPaper — AI PDF Reader for Researchers

Tracking since May 21, 2026.

Changelog

• May 27, 2026
  description

  DeepPaper is an AI reading companion for researchers and graduate students. It embeds Mozilla's PDF.js viewer and connects to your own DeepSeek API key, so you stay in control of your data.
  
  Core features:
  
  - AI Q&A grounded in the current page — answers are based on the content you're reading, not generic knowledge
  - Highlight & ask — select any text in the PDF and ask a question instantly via a popup
  - Region-select — box around a formula, figure, or scanned area; AI reads the image and answers
  - Need-more-context detection — if a single page isn't enough, the assistant automatically expands to surrounding pages
  - LaTeX math rendering — formulas in AI replies are rendered with KaTeX, including error correction for LLM output
  - Multilingual — ask in any language, replies come back in the same language. UI supports English, 简体中文, 繁體中文
  - Dark mode — follow system, light, or dark theme
  - No subscriptions, no backend — bring your own DeepSeek API key. Your PDF content and questions never touch our servers
  
  Built for academic papers: supports text-layer PDFs for text-based Q&A, and scanned/image-based PDFs via vision mode for formula and figure understanding.

  DeepPaper — Read papers deeply with AI. 100% free.
  
  Highlight a passage, box a formula, or just ask — DeepPaper explains, summarizes, and answers instantly. No uploads. No accounts. Your paper stays on your device.
  
  Why researchers love it:
  
  Ask anything about the page you're reading — AI answers grounded in the actual content, not generic knowledge
  Highlight and ask — select any text, type a question, get an instant answer
  Box a formula or figure (coming soon) — circle anything you don't understand and let AI figure it out
  Auto-expanding context — reads more pages when needed, so you don't have to copy-paste
  Speaks your language — ask in English, Chinese, or any language; replies follow naturally. UI in English, 简体中文, 繁體中文.
  Easy on the eyes — dark mode included
  Built for academic papers, theses, and preprints. Completely free. No account required. Your PDF stays on your device — always.

• May 27, 2026
  category

  productivity/tools

  productivity/education

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