flyfield 2026.4.13

Tools for extracting, processing, and generating interactive fields for PDFs containing white box fields.

flyfield

Transform static white box PDF forms into interactive forms for fast automation.

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Overview

flyfield automatically analyzes static PDF forms, creates fillable fields, marks field locations for verification, fills and extracts data, and seamlessly converts money values between PDF text and spreadsheet/database numeric formats.

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Key Features

• Generate interactive form fields and marked-up PDFs from PDF white box forms
• Fill and export form data using CSV files
• Seamlessly convert money values between PDF text and CSV number formats
• Simple command-line interface for efficient workflows
• Open source and flexible for diverse PDF automation needs

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Installation

Available on PyPI for easy installation and updates.

Install with pipx:

pipx install flyfield

Check version:

flyfield --version

Or install via pip:

pip install flyfield

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Usage

Run commands on PDF files as needed:

flyfield --input-pdf myfile.pdf --markup

Options:

• --markup Generate a PDF highlighting white boxes
• --fields Add interactive form fields
• --fill Fill form fields using data from a CSV or FDF file
• --capture Export filled form data to CSV
• --input-csv Load field data from a CSV instead of extracting
• --fdf Use with --capture for FDF format
• --debug Show detailed processing logs

Example workflow:

flyfield --input-pdf form.pdf --markup --fields  
flyfield --input-pdf form-fields.pdf --fill form-fill.csv  
flyfield --input-pdf form-filled.pdf --input-csv form.csv --capture  

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For Developers

Clone and install development tools:

git clone https://github.com/flywire/flyfield.git  
cd flyfield  
pip install -e .[dev]  

Run tests:

tox  

Modules:

• extract — box detection
• layout — analyse, group and filter fields
• markup_and_fields — generate fields and markings
• io_utils — data I/O
• utils — utility functions

For CLI help:

python -m flyfield.cli --help  

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License

GNU GPL v3.0 or later. See LICENSE.

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Contributing

Contributions welcome via issues and pull requests.

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Acknowledgements

• Powered by PyMuPDF.
• Uses PyPDFForm.
• Designed to simplify workflows involving white boxed PDF form fields.

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