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Example code of antradar/gspdf

Informations about the package gspdf

GSPDF - High-Performance Streaming PDF Generation Library

License: MIT PHP Version

GSPDF is a high-performance PDF generation library for PHP with streaming architecture that achieves O(1) memory usage and delivers 5-153x faster performance than TCPDF.

🚀 Key Features

📦 Installation

Requirements

Option 1: Composer (Recommended)

Then use Composer's autoloader:

Option 2: Manual Installation (No Composer Required)

We maintain full support for non-Composer installations, as many libraries only offer Composer options.

  1. Clone or download this repository
  2. Include the required files manually:

Note: Manual installation gives you full control and zero dependency on Composer infrastructure.

🎯 Quick Start

Hello World

HTML Rendering

QR Code Generation

📚 Documentation

🎨 Features

Streaming Architecture

GSPDF uses a streaming architecture that writes PDF content directly to output as it's generated:

HTML Support

The HTML module provides streaming HTML-to-PDF conversion:

Font Subsetting

Automatic font subsetting reduces PDF file sizes:

Image Embedding: JPEG-Only by Design

GSPDF deliberately supports JPEG only and disables PNG embedding. This design decision reflects our relentless focus on performance:

Why not PNG?

Recommendation: Use JPEG for all images. For logos/graphics that require transparency, consider SVG or vector graphics instead.

Placeholder Strategy

Two-pass PDF generation for dynamic content:

📊 Performance

Benchmark results (GSPDF vs TCPDF):

Operation GSPDF TCPDF Speedup
Simple text (100 pages) 0.15s 0.75s 5x faster
HTML rendering (complex) 0.12s 18.4s 153x faster
HTML rendering (simple) 0.09s 3.0s 33x faster
Memory usage O(1) O(n) Constant

🤝 Contributing

Contributions are welcome! Please feel free to submit pull requests or open issues.

📄 License

MIT License

Copyright (c) 2025 Antradar Software Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

👤 Author

Schien Dong
Antradar Software Inc.

🙏 Acknowledgments

📞 Support

For issues, questions, or feature requests, please open an issue on GitHub.

All versions of gspdf with dependencies

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Requires php Version >=7.3
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