PrimoPDF

PrimoPDF is a freeware PDF creator for Microsoft Windows. It functions as a virtual printer, allowing users to "print" documents from any application with printing capability directly into a PDF file.

PrimoPDF offers users control over the output PDF's properties, including security settings (password protection), document information (author, title, subject, keywords), and optimization settings for different uses, such as print quality, screen viewing, or eBook distribution.

The software is developed by Nitro Software, Inc., and was initially released as freeware to allow users to create PDF documents without purchasing more expensive PDF editing software. While initially a popular free option, support and updates for PrimoPDF have ceased, leading users to consider alternative PDF creation tools.