pdf2zh 1.9.11
Latex PDF Translator
Requires Python: <3.13,>=3.10

<div align="center">

English | [简体中文](docs/README_zh-CN.md) | [繁體中文](docs/README_zh-TW.md) | [日本語](docs/README_ja-JP.md) | [한국어](docs/README_ko-KR.md)

<img src="./docs/images/banner.png" width="320px"  alt="PDF2ZH"/>

<h2 id="title">PDFMathTranslate</h2>

<p>
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  <a href="https://huggingface.co/spaces/reycn/PDFMathTranslate-Docker">
    <img src="https://img.shields.io/badge/%F0%9F%A4%97-Online%20Demo-FF9E0D"></a>
  <a href="https://www.modelscope.cn/studios/AI-ModelScope/PDFMathTranslate">
    <img src="https://img.shields.io/badge/ModelScope-Demo-blue"></a>
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</p>

<a href="https://trendshift.io/repositories/12424" target="_blank"><img src="https://trendshift.io/api/badge/repositories/12424" alt="Byaidu%2FPDFMathTranslate | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>

</div>

PDF scientific paper translation and bilingual comparison.

- 📊 Preserve formulas, charts, table of contents, and annotations _([preview](#preview))_.
- 🌐 Support [multiple languages](#language), and diverse [translation services](#services).
- 🤖 Provides [commandline tool](#usage), [interactive user interface](#gui), and [Docker](#docker)

Feel free to provide feedback in [GitHub Issues](https://github.com/Byaidu/PDFMathTranslate/issues) or [Telegram Group](https://t.me/+Z9_SgnxmsmA5NzBl).

For details on how to contribute, please consult the [Contribution Guide](https://github.com/Byaidu/PDFMathTranslate/wiki/Contribution-Guide---%E8%B4%A1%E7%8C%AE%E6%8C%87%E5%8D%97).

<h2 id="updates">Updates</h2>

- [May 9, 2025] pdf2zh 2.0 Preview Version [#586](https://github.com/Byaidu/PDFMathTranslate/issues/586): The Windows ZIP file and Docker image are now available.

> [!NOTE]
>
> 2.0 Moved to a new repository under the organization: [PDFMathTranslate/PDFMathTranslate-next](https://github.com/PDFMathTranslate/PDFMathTranslate-next)
> 
> Version 2.0 official release has been published.

- [Mar. 3, 2025] Experimental support for the new backend [BabelDOC](https://github.com/funstory-ai/BabelDOC) WebUI added as an experimental option (by [@awwaawwa](https://github.com/awwaawwa))
- [Feb. 22 2025] Better release CI and well-packaged windows-amd64 exe (by [@awwaawwa](https://github.com/awwaawwa))
- [Dec. 24 2024] The translator now supports local models on [Xinference](https://github.com/xorbitsai/inference) _(by [@imClumsyPanda](https://github.com/imClumsyPanda))_
- [Dec. 19 2024] Non-PDF/A documents are now supported using `-cp` _(by [@reycn](https://github.com/reycn))_
- [Dec. 13 2024] Additional support for backend by _(by [@YadominJinta](https://github.com/YadominJinta))_
- [Dec. 10 2024] The translator now supports OpenAI models on Azure _(by [@yidasanqian](https://github.com/yidasanqian))_

<h2 id="preview">Preview</h2>

<div align="center">
<img src="./docs/images/preview.gif" width="80%"/>
</div>

<h2 id="demo">Online Service 🌟</h2>

You can try our application out using either of the following demos:

- [Public free service](https://pdf2zh.com/) online without installation _(recommended)_.
- [Immersive Translate - BabelDOC](https://app.immersivetranslate.com/babel-doc/) 1000 free pages per month. _(recommended)_
- [Demo hosted on HuggingFace](https://huggingface.co/spaces/reycn/PDFMathTranslate-Docker)
- [Demo hosted on ModelScope](https://www.modelscope.cn/studios/AI-ModelScope/PDFMathTranslate) without installation.

Note that the computing resources of the demo are limited, so please avoid abusing them.

<h2 id="install">Installation and Usage</h2>

### Methods

For different use cases, we provide distinct methods to use our program:

<details open>
  <summary>1. UV install</summary>

1. Python installed (3.10 <= version <= 3.12)

2. Install our package:

   ```bash
   pip install uv
   uv tool install --python 3.12 pdf2zh
   ```

3. Execute translation, files generated in [current working directory](https://chatgpt.com/share/6745ed36-9acc-800e-8a90-59204bd13444):

   ```bash
   pdf2zh document.pdf
   ```

</details>

<details>
  <summary>2. Windows exe</summary>

1. Download pdf2zh-version-win64.zip from [release page](https://github.com/Byaidu/PDFMathTranslate/releases)

2. Unzip and double-click `pdf2zh.exe` to run.

</details>

<details>
  <summary>3. Graphic user interface</summary>

1. Python installed (3.10 <= version <= 3.12)

2. Install our package:

```bash
pip install pdf2zh
```

3. Start using in browser:

   ```bash
   pdf2zh -i
   ```

4. If your browser has not been started automatically, goto

   ```bash
   http://localhost:7860/
   ```

   <img src="./docs/images/gui.gif" width="500"/>

See [documentation for GUI](./docs/README_GUI.md) for more details.

</details>

<details>
  <summary>4. Docker</summary>

1. Pull and run:

   ```bash
   docker pull byaidu/pdf2zh
   docker run -d -p 7860:7860 byaidu/pdf2zh
   ```

2. Open in browser:

   ```
   http://localhost:7860/
   ```

For docker deployment on cloud service:

<div>
<a href="https://www.heroku.com/deploy?template=https://github.com/Byaidu/PDFMathTranslate">
  <img src="https://www.herokucdn.com/deploy/button.svg" alt="Deploy" height="26"></a>
<a href="https://render.com/deploy">
  <img src="https://render.com/images/deploy-to-render-button.svg" alt="Deploy to Koyeb" height="26"></a>
<a href="https://zeabur.com/templates/5FQIGX?referralCode=reycn">
  <img src="https://zeabur.com/button.svg" alt="Deploy on Zeabur" height="26"></a>
<a href="https://template.sealos.io/deploy?templateName=pdf2zh">
  <img src="https://sealos.io/Deploy-on-Sealos.svg" alt="Deploy on Sealos" height="26"></a>
<a href="https://app.koyeb.com/deploy?type=git&builder=buildpack&repository=github.com/Byaidu/PDFMathTranslate&branch=main&name=pdf-math-translate">
  <img src="https://www.koyeb.com/static/images/deploy/button.svg" alt="Deploy to Koyeb" height="26"></a>
</div>

</details>

<details>
  <summary>5. Zotero Plugin</summary>


See [Zotero PDF2zh](https://github.com/guaguastandup/zotero-pdf2zh) for more details.

</details>

<details>
  <summary>6. Commandline</summary>

1. Python installed (3.10 <= version <= 3.12)
2. Install our package:

   ```bash
   pip install pdf2zh
   ```

3. Execute translation, files generated in [current working directory](https://chatgpt.com/share/6745ed36-9acc-800e-8a90-59204bd13444):

   ```bash
   pdf2zh document.pdf
   ```

</details>

> [!TIP]
>
> - If you're using Windows and cannot open the file after downloading, please install [vc_redist.x64.exe](https://aka.ms/vs/17/release/vc_redist.x64.exe) and try again.
>
> - If you cannot access Docker Hub, please try the image on [GitHub Container Registry](https://github.com/Byaidu/PDFMathTranslate/pkgs/container/pdfmathtranslate).
> ```bash
> docker pull ghcr.io/byaidu/pdfmathtranslate
> docker run -d -p 7860:7860 ghcr.io/byaidu/pdfmathtranslate
> ```

### Unable to install?

The present program needs an AI model(`wybxc/DocLayout-YOLO-DocStructBench-onnx`) before working and some users are not able to download due to network issues. If you have a problem with downloading this model, we provide a workaround using the following environment variable:

```shell
set HF_ENDPOINT=https://hf-mirror.com
```

For PowerShell user:

```shell
$env:HF_ENDPOINT = https://hf-mirror.com
```

If the solution does not work to you / you encountered other issues, please refer to [frequently asked questions](https://github.com/Byaidu/PDFMathTranslate/wiki#-faq--%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98).

<h2 id="usage">Advanced Options</h2>

Execute the translation command in the command line to generate the translated document `example-mono.pdf` and the bilingual document `example-dual.pdf` in the current working directory. Use Google as the default translation service. More support translation services can find [HERE](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#services).

<img src="./docs/images/cmd.explained.png" width="580px"  alt="cmd"/>

In the following table, we list all advanced options for reference:

| Option                | Function                                                                                                      | Example                                        |
| --------------------- | ------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| files                 | Local files                                                                                                   | `pdf2zh ~/local.pdf`                           |
| links                 | Online files                                                                                                  | `pdf2zh http://arxiv.org/paper.pdf`            |
| `-i`                  | [Enter GUI](#gui)                                                                                             | `pdf2zh -i`                                    |
| `-p`                  | [Partial document translation](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#partial) | `pdf2zh example.pdf -p 1`                      |
| `-li`                 | [Source language](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#languages)            | `pdf2zh example.pdf -li en`                    |
| `-lo`                 | [Target language](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#languages)            | `pdf2zh example.pdf -lo zh`                    |
| `-s`                  | [Translation service](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#services)         | `pdf2zh example.pdf -s deepl`                  |
| `-t`                  | [Multi-threads](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#threads)                | `pdf2zh example.pdf -t 1`                      |
| `-o`                  | Output dir                                                                                                    | `pdf2zh example.pdf -o output`                 |
| `-f`, `-c`            | [Exceptions](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#exceptions)                | `pdf2zh example.pdf -f "(MS.*)"`               |
| `-cp`                 | Compatibility Mode                                                                                            | `pdf2zh example.pdf --compatible`              |
| `--skip-subset-fonts` | [Skip font subset](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#font-subset)         | `pdf2zh example.pdf --skip-subset-fonts`       |
| `--ignore-cache`      | [Ignore translate cache](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#cache)         | `pdf2zh example.pdf --ignore-cache`            |
| `--share`             | Public link                                                                                                   | `pdf2zh -i --share`                            |
| `--authorized`        | [Authorization](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#auth)                   | `pdf2zh -i --authorized users.txt [auth.html]` |
| `--prompt`            | [Custom Prompt](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#prompt)                 | `pdf2zh --prompt [prompt.txt]`                 |
| `--onnx`              | [Use Custom DocLayout-YOLO ONNX model]                                                                        | `pdf2zh --onnx [onnx/model/path]`              |
| `--serverport`        | [Use Custom WebUI port]                                                                                       | `pdf2zh --serverport 7860`                     |
| `--dir`               | [batch translate]                                                                                             | `pdf2zh --dir /path/to/translate/`             |
| `--config`            | [configuration file](https://github.com/Byaidu/PDFMathTranslate/blob/main/docs/ADVANCED.md#cofig)             | `pdf2zh --config /path/to/config/config.json`  |
| `--serverport`        | [custom gradio server port]                                                                                   | `pdf2zh --serverport 7860`                     |
| `--babeldoc`          | Use Experimental backend [BabelDOC](https://funstory-ai.github.io/BabelDOC/) to translate                     | `pdf2zh --babeldoc` -s openai example.pdf      |
| `--mcp`               | Enable MCP STDIO mode                                                                                         | `pdf2zh --mcp`                                 |
| `--sse`               | Enable MCP SSE mode                                                                                           | `pdf2zh --mcp --sse`                           |

For detailed explanations, please refer to our document about [Advanced Usage](./docs/ADVANCED.md) for a full list of each option.

<h2 id="downstream">Secondary Development (APIs)</h2>

For downstream applications, please refer to our document about [API Details](./docs/APIS.md) for further information about:

- [Python API](./docs/APIS.md#api-python), how to use the program in other Python programs
- [HTTP API](./docs/APIS.md#api-http), how to communicate with a server with the program installed

<h2 id="todo">TODOs</h2>

- [ ] Parse layout with DocLayNet based models, [PaddleX](https://github.com/PaddlePaddle/PaddleX/blob/17cc27ac3842e7880ca4aad92358d3ef8555429a/paddlex/repo_apis/PaddleDetection_api/object_det/official_categories.py#L81), [PaperMage](https://github.com/allenai/papermage/blob/9cd4bb48cbedab45d0f7a455711438f1632abebe/README.md?plain=1#L102), [SAM2](https://github.com/facebookresearch/sam2)

- [ ] Fix page rotation, table of contents, format of lists

- [ ] Fix pixel formula in old papers

- [ ] Async retry except KeyboardInterrupt

- [ ] Knuth–Plass algorithm for western languages

- [ ] Support non-PDF/A files

- [ ] Plugins of [Zotero](https://github.com/zotero/zotero) and [Obsidian](https://github.com/obsidianmd/obsidian-releases)

<h2 id="acknowledgement">Acknowledgements</h2>

- [Immersive Translation](https://immersivetranslate.com) sponsors monthly Pro membership redemption codes for active contributors to this project, see details at: [CONTRIBUTOR_REWARD.md](https://github.com/funstory-ai/BabelDOC/blob/main/docs/CONTRIBUTOR_REWARD.md)

- New backend: [BabelDOC](https://github.com/funstory-ai/BabelDOC)

- Document merging: [PyMuPDF](https://github.com/pymupdf/PyMuPDF)

- Document parsing: [Pdfminer.six](https://github.com/pdfminer/pdfminer.six)

- Document extraction: [MinerU](https://github.com/opendatalab/MinerU)

- Document Preview: [Gradio PDF](https://github.com/freddyaboulton/gradio-pdf)

- Multi-threaded translation: [MathTranslate](https://github.com/SUSYUSTC/MathTranslate)

- Layout parsing: [DocLayout-YOLO](https://github.com/opendatalab/DocLayout-YOLO)

- Document standard: [PDF Explained](https://zxyle.github.io/PDF-Explained/), [PDF Cheat Sheets](https://pdfa.org/resource/pdf-cheat-sheets/)

- Multilingual Font: [Go Noto Universal](https://github.com/satbyy/go-noto-universal)

<h2 id="contrib">Contributors</h2>

<a href="https://github.com/Byaidu/PDFMathTranslate/graphs/contributors">
  <img src="https://opencollective.com/PDFMathTranslate/contributors.svg?width=890&button=false" />
</a>

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<h2 id="star_hist">Star History</h2>

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