How to Add Custom Text to PDF Files Using Python's Free Spire.PDF Library

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Developers can add custom text to existing PDF documents in Python using the Free Spire.PDF library, which requires no local Adobe components. The library supports a range of styling options including custom fonts, RGB colors, transparency, and text rotation, making it suitable for use cases like watermarks, annotations, and page numbering. Installation is straightforward via pip and is compatible with Python 3.7 and above across Windows, macOS, and Linux. The basic workflow involves loading a PDF, selecting a target page, configuring font and brush settings, and drawing text at specified coordinates before saving the file. Advanced customization is also available through multiple font initialization methods, including CJK fonts, system TrueType fonts, and built-in PDF standard fonts.

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