Overview

About PDF9.Ai

PDF9.Ai is a browser-first PDF workspace combining 68 tools in one platform. It covers organizing (merge, split, rotate), converting (Word, Excel, PowerPoint, HTML, CAD, images), editing (text, annotations, watermarks, Bates numbering), OCR, and security (password protection, redaction, comparison).

Nine AI models are included at no extra cost, enabling chat with PDFs, summarization, and translation into 50+ languages with source-page citations.

PDF9 Trust provides electronic and certificate-based digital signatures (PAdES/PKCS#7) with QR-verified audit trails. Smart redaction automatically detects and removes PII such as emails, phone numbers, and SSNs.

Most tools run entirely in-browser with files never leaving the device. For enterprises, the platform offers SSO, RBAC, audit logs, and compliance controls aligned with ISO 27001, SOC 2 Type II, and HIPAA. Native desktop apps are available for Windows and macOS.

At a glance

Software information

Industries served, licensing and the support PDF9.Ai provides.

Industries

Education-management
Legal-services
Management-consulting
Banking
Financial-services
Insurance

Licensing

Proprietary
Monthly Payment
Annual Subscription
Free version

Support

Email
Live Chat

Training

Documentation

Languages (12)

EnglishVietnameseGermanJapanesePortugueseSpanishFrenchArabicChineseKoreanIndonesianThai

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Capabilities

PDF9.Ai features

The full feature set, grouped by module.

PDF

Annotations
Convert to PDF
Content Editing
Digital Signature
Encryption
Merge/Append
PDF Reader
Watermarking
AI Features

Document Management

Document Assembly
Document Sharing
Electronic Signature
File Type Conversion
Offline Access
Optical Character Recognition
AI Features

OCR

Batch Processing
Convert to PDF
Multi-Language
Output Formats
AI Features

Document Control

Compliance Management
Document Assembly
Document Capture
Electronic Signature
File Type Conversion
Security
AI Features

Content Management

Document Management
Form Builder
AI Features
Multilingual

Plans

PDF9.Ai pricing

Free Version

Yes

Payment Frequency

Monthly Payment, Annual Subscription

Preferred Currency

USD ($)

PDF9.Ai offers a free plan with access to core PDF tools and limited AI usage. Paid plans include Pro and Enterprise tiers billed monthly or annually. Pro unlocks unlimited AI queries across 9 models, batch processing, advanced e-sign, and priority support. Enterprise adds SSO (SAML 2.0/OIDC), RBAC, audit logs, compliance dashboard, HIPAA BAA, and dedicated API access. Most browser-based tools run locally at no cost regardless of plan.

Vendor pricing page

Works with

Integrations

PDF9.Ai connects with the tools your team already uses.

Google CloudWasabiGoogle GeminiOpenAIAnthropic ClaudeDigiCertSectigoStripeSAML 2.0OIDC

Media

Screenshots & video

Plans & Pricing Page — Pro, Business, Education, Enterprise