---
title: PDF9.Ai Reviews
meta_title: 'PDF9.Ai Reviews 2026: Details, Pricing, & Features | G2'
meta_description: Filter reviews by the users' company size, role or industry to find
  out how PDF9.Ai works for a business like yours.
date_modified: '2026-08-11'
parent_category:
  name: Collaboration & Productivity
  url: https://www.g2.com/categories/collaboration-productivity
---


# PDF9.Ai Reviews
**Vendor:** PDF9.Ai  
**Category:** [PDF Editors](https://www.g2.com/categories/pdf-editor)
## About PDF9.Ai
PDF9.Ai is a free, private, AI-powered PDF workspace that offers a comprehensive suite of tools for managing PDF documents. Users can view, edit, merge, split, compress, and convert PDFs, as well as recognize text through Optical Character Recognition (OCR). The platform also facilitates filling out official government forms and sending documents for electronic signatures. Additionally, PDF9.Ai features a built-in AI assistant capable of analyzing, summarizing, and translating documents. Most tools operate entirely within the user's browser, ensuring that files remain on the device and enhancing privacy. By signing in with Google, users can save documents to PDF9 Drive and synchronize their work across multiple devices.






- [View PDF9.Ai pricing details and edition comparison](https://www.g2.com/products/pdf9-ai/reviews?section=pricing&secure%5Bexpires_at%5D=2026-08-15+04%3A27%3A38+-0500&secure%5Bsession_id%5D=22735e95-d300-4805-8522-c4250a7e511a&secure%5Btoken%5D=85a88a558028661fa3c837e1e4549ca7e61023f4f164008632b4b11acdeb4afb&format=llm_user)

## PDF9.Ai Features
**Additional Functionality**
- Third-Party Integrations
- To-Do List
- @mentions
- Single Sign On
- File Management
- Activity Dashboard
- Drag & Drop
- Alerts/Notifications
- Prioritization
- Access Controls/Permissions
- Screen Sharing
- Content Management
- Brainstorming
- AI Copilot
- File Transfer
- Calendar Management
- Status Tracking
- Real-Time Notifications
- Version Control
- Task Management
- Activity Tracking
- Real Time Editing
- Communication Management
- Chat/Messaging
- Tagging
- Generative AI
- Assignment Management
- Task Scheduling
- Project Management
- Collaboration Tools
- Workflow Management
- Secure Data Storage
- File Sharing
- Document Storage
- Task Progress Tracking
- Discussions/Forums
- Commenting/Notes
- Reporting & Statistics
- Contact Management
- Video Conferencing
- Progress Tracking
- Mobile Access
- API
- Document Management
- Customizable Branding

**Organization**
- Protect
- Document Management
- Document Scanning
- Editing History
- User Management
- File Management
- Template Management
- Forms Management
- Communication Management
- Image Editing
- Text Editing

**Editing**
- Size
- Edit Fields
- Convert to PDF
- Field Functions
- Annotate

**Operating System**
- PC Operating System
- Mac Operating System
- Linux Operating System

**Additional Functionality**
- Customizable Branding
- Rich Text Editor
- Data Import/Export
- Batch Processing
- Encryption
- AI Copilot
- Drag & Drop
- Data Synchronization
- SSL Security
- Commenting/Notes
- Alerts/Notifications
- Generative AI
- Secure Data Storage
- API
- Access Controls/Permissions
- Digital Signature
- Customizable Forms
- HIPAA Compliant
- Watermarking
- Full Text Search
- PDF Conversion
- Mobile Access
- Collaboration Tools
- Merge/Append Files
- File Transfer
- Real-Time Notifications
- Annotations
- PDF Reader
- Document Storage
- Offline Access
- Version Control
- Compression
- Indexing
- Document Templates
- Third-Party Integrations
- Search/Filter
- Document Review
- Electronic Signature
- Side-by-Side Comparison
- Rearrange Pages
- Optical Character Recognition
- Rotate Pages
- Delete Pages

## Top PDF9.Ai Alternatives
  - [Adobe Acrobat](https://www.g2.com/products/adobe-acrobat/reviews) - 4.5/5.0 (4,673 reviews)
  - [Foxit PDF Editor](https://www.g2.com/products/foxit-pdf-editor/reviews) - 4.6/5.0 (3,470 reviews)
  - [Wondershare PDFelement](https://www.g2.com/products/wondershare-wondershare-pdfelement/reviews) - 4.5/5.0 (1,028 reviews)