Nitro PDF Pro 13 for Mac is a professional PDF creation, editing, annotation, OCR, conversion, form, signing, and document-management application designed for users who work extensively with digital documents. It provides tools for editing existing PDFs, creating new documents, combining files, adding annotations and signatures, converting scanned documents with OCR, and protecting sensitive information. Nitro’s documentation identifies the 13.x generation as an earlier Mac release, preceding the current 14.x and 26.x generations. resources.gonitro.com

Nitro PDF Pro provides direct editing of PDF text and images, page management, document merging, annotations, bookmarks, headers and footers, watermarks, stamps, and interactive forms. It can also convert PDF content to Microsoft Office formats and common image formats, making it suitable for business, education, legal, administrative, and document-production workflows. Nitro

The application includes Optical Character Recognition (OCR) for converting scanned or image-based documents into searchable text. Users can review or edit the OCR layer, correct recognized text, and work with multilingual documents. Nitro PDF Pro also provides form creation, signature fields, electronic signing, document permissions, password protection, and AES encryption. Nitro

For professional users, Nitro PDF Pro 13 supports automation through AppleScript and JavaScript, allowing repetitive PDF operations to be integrated into Mac-based workflows. It can also work with file attachments, annotations, PDF portfolios, tables of contents, and iCloud-synchronized Library items. Nitro

Key Features

• Professional PDF creation and editing
• Direct editing of PDF text
• PDF image editing and manipulation
• Add, resize, move, copy, and delete images
• OCR for scanned documents
• Editable and searchable OCR text
• OCR layer review and correction
• PDF annotation and markup
• Highlight, underline, strikethrough, notes, and comments
• Interactive PDF form creation
• Automatic form creation
• Digital signatures and signature fields
• Password protection
• Up to 256-bit AES encryption
• Document permissions management
• Redaction and sensitive-information removal
• Search and replace
• Search and redact
• Search and highlight
• Page insertion, deletion, and reordering
• Combine multiple PDF documents
• Bookmarks and tables of contents
• Headers, footers, page numbers, and watermarks
• Stamps and reusable Library objects
• PDF Portfolio creation
• File attachments and annotations
• Audio annotations
• PDF-to-Word conversion
• PDF-to-Excel conversion
• PDF-to-PowerPoint conversion
• PDF-to-TIFF, JPEG, and PNG export
• PDF/A archival export
• HTML-to-PDF conversion
• Scanning through Image Capture
• AppleScript automation
• JavaScript Automation
• iCloud Library synchronization
• Nitro Sign and DocuSign support
• Chinese, Japanese, and Korean OCR support
• Available in multiple languages Nitro

What’s New

• Nitro PDF Pro 13 for Mac belongs to Nitro’s earlier 13.x product generation.
• Nitro’s later installation documentation specifically references v13.x as a previous generation and directs v13 users to legacy installation documentation. resources.gonitro.com
• The current Nitro product line has subsequently moved through version 14 and into the current 26.x generation. Nitro
• Features commonly associated with the mature Nitro PDF Pro Mac workflow include enhanced OCR, PDF editing, forms, digital signatures, redaction, Office conversion, and document automation. Nitro

Professional Applications

• Business document editing
• Legal document preparation
• Contract review
• Accounting and financial documents
• Government and administrative documentation
• Education and academic documents
• Scanned-document digitization
• OCR and document archiving
• Electronic forms
• PDF signing and approvals
• Secure document distribution
• Technical and engineering documentation
• Document collaboration
• PDF conversion and publishing
• Automated PDF workflows

System Requirements

Minimum Requirements

For the Nitro PDF Pro Mac 13.x generation, Nitro’s current public documentation no longer provides a complete v13-specific hardware table. Nitro’s legacy documentation confirms that v13.x is an earlier Mac generation, while the published Mac requirements for the broader Nitro PDF Pro product line specify: resources.gonitro.com

• OS: macOS compatible with the 13.x release
• CPU: Intel 64-bit Mac
• RAM: 1GB minimum
• Storage: Up to 2GB available disk space
• Display: 1280 × 800 minimum
• Internet: Required for applicable activation and online services

Note: Apple Silicon support should not be assumed for a particular Nitro PDF Pro 13 installer without checking that specific build. Nitro’s later Mac documentation explicitly supports Apple M1 or later, but that is not evidence that every 13.x build was native Apple Silicon compatible. Nitro

Recommended Requirements

• OS: A macOS version supported by the specific Nitro PDF Pro 13 build
• CPU: Intel Core i5/i7 or equivalent Mac processor
• RAM: 8GB or more
• Storage: SSD with at least 5GB free space
• Display: 1920 × 1080 or higher
• Professional workflows: 16GB RAM recommended for large PDFs, OCR, forms, and multi-document processing