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PDFMathTranslate

Open-source tool that translates scientific PDFs with AI and keeps formulas, charts and layout. Free to install.

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Is PDFMathTranslate free?

Yes, PDFMathTranslate has a free plan. What you get: Open source (AGPL-3.0): install free; also a free public online demo. To get it: install with pip or uv, or run the Docker image; then run pdf2zh on your PDF; then or use the public online service. Watch out: the online demo has limited computing resources. Verified on github.com.

Free plan at a glance

Includes
  • Open source (AGPL-3.0): install free; also a free public online demo

The software is free and open source. The hosted demo is free but has limited computing resources; services such as OpenAI or DeepL are billed by their own providers.

Duration
Free forever

How to get it free

Self-host
  1. Install with pip or uv, or run the Docker image
  2. Run pdf2zh on your PDF
  3. Or use the public online service

Good to know

  • The online demo has limited computing resources
Get the free plan

github.com, Checked Source

Overview

PDFMathTranslate translates whole PDF papers into another language while preserving formulas, charts, the table of contents and annotations. It is open source under AGPL-3.0, and you can run it yourself or try a free public online demo.

Key features

  • Keeps formulas, charts, table of contents and annotations in the translated PDF
  • Works with several translation services, including Google, DeepL, Ollama and OpenAI
  • Command line tool, browser interface, Docker image and Zotero plugin
  • Outputs a translated PDF and a bilingual PDF
  • Can translate only chosen pages
  • MCP mode for use from AI assistants

Best for

Tasks
Translate text, Research scientific papers
People
Researchers reading papers in another language, Students, Developers who want to self-host a PDF translator

Limitations

  • The public online demo has limited computing resources
  • Installing it yourself needs Python 3.11 to 3.12 or Docker
  • The AI layout model can be hard to download in some regions

FAQ

Is PDFMathTranslate free?
Yes. PDFMathTranslate has a free plan: Open source (AGPL-3.0): install free; also a free public online demo. We last checked github.com's pricing page on 2026-11-12.
What does the PDFMathTranslate free plan include?
Open source (AGPL-3.0): install free; also a free public online demo. Source: https://github.com/PDFMathTranslate/PDFMathTranslate (checked 2026-11-12).
How do I get PDFMathTranslate for free?
Steps: Install with pip or uv, or run the Docker image; Run pdf2zh on your PDF; Or use the public online service. Start at https://github.com/PDFMathTranslate/PDFMathTranslate (checked 2026-10-22).
Do I need an account to use PDFMathTranslate for free?
Not for the free option: the free route is to self-host PDFMathTranslate (Install with pip or uv, or run the Docker image). Checked 2026-10-22.
What's the catch with PDFMathTranslate's free plan?
The online demo has limited computing resources. Checked 2026-10-22.
What are free alternatives to PDFMathTranslate?
Jenni AI, Lara Translate and Paperpal all have free plans. We checked their free offers on 2026-11-12.
Is there a free online version?
Yes. The README points to a public free service online without installation, plus demos on HuggingFace and ModelScope. The maker notes the demo's computing resources are limited.Source: github.com/PDFMathTranslate/PDFMathTranslate
Which translation services does it support?
The README says it supports Google, DeepL, Ollama and OpenAI, and uses Google as the default service.Source: github.com/PDFMathTranslate/PDFMathTranslate

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Sources

Free offer
Verified on github.com/PDFMathTranslate/PDFMathTranslate
…work is open-sourced at https://github.com/byaidu/pdfmathtranslate with more than 222k…
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How we check free offers

Added by our team. We check that a free option exists and record the date; signing up is between you and PDFMathTranslate, so read their privacy policy and terms first.

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