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MinerU to PPT Converter

This tool converts PDF files and images into editable PowerPoint presentations (.pptx) by leveraging structured data from the MinerU PDF Extractor. It accurately reconstructs text, images, and layout, providing a high-fidelity, editable version of the original document.

The application features a user-friendly graphical interface (GUI) and is designed for easy use.

For Users: How to Use

As a user, you only need the packaged Windows release (CPU or GPU variant). You do not need to install Python or any libraries.

1. Download the Application: Get the latest package from the project's Releases page.

   • MinerU2PPT-win64-cpu-setup.exe: CPU-only package (recommended default).
   • MinerU2PPT-win64-gpu-cu118-setup.exe: CUDA 11.8 GPU package.
   • MinerU2PPT-win64-gpu-cu126-setup.exe: CUDA 12.6 GPU package.
   • MinerU2PPT-win64-gpu-cu129-setup.exe: CUDA 12.9 GPU package.

2. Get the MinerU JSON File:

   • Go to the MinerU PDF/Image Extractor.
   • Upload your PDF or image file and let it process.
   • Download the resulting JSON file. This file contains the structural information that our tool needs for the conversion.

3. Run the Converter:

   • Double-click the executable to start the application.
   • Select Input File: Drag and drop your PDF or image file onto the first input field, or use the "Browse..." button.
   • Select JSON File: Drag and drop the JSON file you downloaded from MinerU onto the second input field.
   • Output Path: The output path for your new PowerPoint file will be automatically filled in. You can change it by typing directly or using the "Save As..." button.
   • Options:
     • Remove Watermark: Check this box to automatically erase elements like page numbers or footers.
     • Generate Debug Images: Keep this unchecked unless you are troubleshooting.
   • Click Start Conversion.

4. Open Your File: Once the conversion is complete, click the "Open Output Folder" button to find your new .pptx file.

Using Batch Mode

The application also supports converting multiple files at once in Batch Mode.

1. Switch to Batch Mode: Click the "Batch Mode" button in the top-right corner of the application. The interface will switch to the batch processing view.
2. Add Tasks:
   • Click the "Add Task" button. A new window will pop up.
   • In the popup, select the Input File, the corresponding MinerU JSON File, and specify the Output Path.
   • Set the Remove Watermark option for this specific task.
   • Click "OK" to add the task to the list.
3. Manage Tasks: You can add multiple tasks to the list. If you need to remove a task, select it from the list and click "Delete Task".
4. Start Batch Conversion: Once all your tasks are added, click "Start Batch Conversion". The application will process each task sequentially. A log will show the progress for each file.

For Developers

This section provides instructions for running the application from source and packaging it for distribution.

Environment Setup

1. Clone the repository.
2. It is recommended to use a virtual environment:

   python -m venv venv
   source venv/bin/activate  # On Windows: venv\Scripts\activate

3. Install dependencies based on your development target.
   • Default (GPU CUDA 11.8 full dev):

     pip install -r requirements.txt

   • GPU CUDA 12.6 full dev:

     pip install -r requirements-gpu-cu126.txt -r requirements-build.txt

   • GPU CUDA 12.9 full dev:

     pip install -r requirements-gpu-cu129.txt -r requirements-build.txt

   • CPU full dev (for CI/other contributors):

     pip install -r requirements-dev-cpu.txt

Running from Source

• To run the GUI application:

  python gui.py

• To use the CLI:

  python main.py --json <path_to_json> --input <path_to_pdf_or_image> --output <path_to_ppt> [OPTIONS]

OCR CLI Options

• --ocr-device {auto,gpu,cpu}: OCR device policy. Default is auto (gpu -> cpu fallback).
• --ocr-model-root <path>: Optional local PaddleOCR model root. When omitted, PaddleOCR will download models automatically on first run.
• --ocr-model-variant {auto,lite,server}: OCR model variant. Default auto picks server when GPU is available, otherwise lite (mobile models).
• --ocr-font-distance-threshold <float>: Font sensitivity for OCR bbox refinement (default 60.0). Higher values tend to produce larger text boxes.

Example:

python main.py --json "demo/case1/MinerU_xxx.json" --input "demo/case1/PixPin_xxx.png" --output "out.pptx" --ocr-device auto --ocr-font-distance-threshold 60

Regression: Generate PPT for All Demo Cases

If you want regression to also produce PPT files for direct visual review, run:

python -m pytest "tests/integration/test_case1_ocr.py" -k all_demo_cases_generate_ppt_outputs_for_manual_review

Generated PPT files will be saved to:

• tmp/regression_ppt_outputs/case1.pptx
• tmp/regression_ppt_outputs/case2.pptx
• tmp/regression_ppt_outputs/case3.pptx
• tmp/regression_ppt_outputs/case4.pptx
• tmp/regression_ppt_outputs/case5.pptx

Packaging as a Standalone Executable (Windows)

This project now recommends onedir/installer-style packaging over onefile for better runtime stability and easier model deployment.

1. Install PyInstaller:

   pip install pyinstaller

2. OCR models (auto-download by default): By default PaddleOCR downloads models automatically on first run. If you want to provide local models, pass --ocr-model-root or set MINERU_OCR_MODEL_ROOT.

   Optional local layout (when provided):

   models/paddleocr/<variant>/<lang>/det
   models/paddleocr/<variant>/<lang>/rec
   models/paddleocr/<variant>/<lang>/cls  # optional if angle classification is enabled
   

   Where <variant> is lite or server.

3. Build the onedir package:

   pyinstaller --clean gui.spec

4. Find build output: The packaged app directory will be generated under dist/MinerU2PPT/.

Documentation

• Documentation domains:
  • docs/architecture/
  • docs/testing/
  • docs/core-flow/
  • docs/api/
• Core flow docs:
  • docs/core-flow/font-size-normalization-pre-render.md
  • docs/core-flow/ocr-bbox-xy-refine-flow.md
  • docs/core-flow/watermark-ir-removal-flow.md
• Architecture docs:
  • docs/architecture/ocr-engine-configuration.md
• Testing docs:
  • docs/testing/font-size-normalization-testing.md
  • docs/testing/ocr-bbox-refine-testing.md
  • docs/testing/ocr-configuration-testing.md
  • docs/testing/watermark-ir-removal-testing.md