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研究Apr 2, 2026·2 min de lectura

PDFMathTranslate — Translate PDF Papers Preserving Format

Translate PDF scientific papers while preserving math formulas, charts, and layout. Supports Google, DeepL, OpenAI, Ollama. CLI, GUI, MCP, Docker, Zotero plugin.

Introducción

PDFMathTranslate (pdf2zh) solves the hardest problem in academic PDF translation: preserving mathematical formulas, charts, tables, and layout while translating text. Most translation tools butcher LaTeX equations and destroy figure layouts — pdf2zh keeps them pixel-perfect.

Featured at EMNLP 2025, it supports 10+ translation backends including Google Translate, DeepL, OpenAI, Anthropic, and local models via Ollama. Integrates with Zotero for one-click translation of your research library. Available as CLI, GUI, Docker, and even an MCP server.

Translation Backends

Backend Quality Speed Cost
Google Translate Good Fast Free
DeepL Excellent Fast Free tier available
OpenAI (GPT-4o) Excellent Moderate API cost
Anthropic (Claude) Excellent Moderate API cost
Ollama (local) Good Depends on GPU Free
Azure Translate Good Fast Free tier

What Gets Preserved

  • Math formulas — LaTeX equations rendered correctly in output
  • Charts and figures — untouched, positioned correctly
  • Tables — structure preserved, text translated
  • References and citations — formatting maintained
  • Page layout — columns, margins, headers/footers kept
  • Hyperlinks — clickable links preserved

Zotero Integration

Install the Zotero plugin from GitHub Releases. Right-click any PDF in your Zotero library → "Translate with pdf2zh". Translated PDF appears alongside the original.

Output Options

  • Dual-column PDF — original + translation side by side
  • Translated PDF — clean translated version only
  • Bilingual mode — original text with translation below each paragraph
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