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What is PDF9.Ai?

PDF9.Ai is a free, AI-powered PDF platform that integrates 68 different tools into a single browser-based environment. It includes features such as a PDF reader, a robust editing suite, conversion utilities, electronic signature capabilities, and enterprise governance controls. Most of its functionalities function seamlessly in the browser, making sure that files stay on the user's device for security. With the support of nine AI models, users can have conversations about documents, obtain summaries, and translate content into more than 50 languages without incurring extra fees. Key features encompass merging, splitting, compressing, and organizing PDFs, as well as converting files to and from various formats like Word, Excel, PowerPoint, HTML, CAD, and numerous image types; conducting OCR; using PAdES/PKCS#7 digital signatures with comprehensive audit trails; performing intelligent PII redaction; completing U.S. government forms; and comparing different documents. PDF9.Ai is designed to serve a wide range of users, including students, freelancers, legal professionals, accountants, HR teams, and corporations. Collaborative teams can utilize features such as single sign-on (SSO), role-based access control (RBAC), audit logs, and a compliance-oriented infrastructure, while desktop applications are also available for Windows and macOS, thus increasing accessibility and user convenience. This versatility makes PDF9.Ai a valuable tool for anyone needing efficient PDF management and collaboration.

What is Instafill?

Instafill.ai is an AI form filler that completes PDF forms automatically and turns Word files, flat PDFs, and scans into fillable templates. It pulls data from whatever you already have - spreadsheets, text files, images, partially filled PDFs, and fills each field with speed and precision. Key features: - AI agent: assembles complete document packages, not just single fields - merging, stamping signatures, headers, and page numbers, placing images, flattening and splitting. - MCP server: connects Claude, ChatGPT, and Codex directly to your form library. - Windows desktop app: right-click any PDF in File Explorer and fill it without opening the app. - Batch filling: complete the same form hundreds of times from CSV or XLSX. - Reusable profiles: store client data once, reuse it across every form. - Field logic: conditionals, dependencies, and row-by-row table control. - API, webhooks, Chrome and Edge extensions.

Media

Media

Integrations Supported

Claude
Claude Duet
Claude for Legal
Gemini
Google Cloud AI Infrastructure
OpenAI
Stripe
Wasabi

Integrations Supported

Claude
Claude Duet
Claude for Legal
ChatGPT
Google Chrome
Microsoft Edge

API Availability

Has API

API Availability

Has API

Pricing Information

$12 per month
PDF9 AI offers a free version with access to core PDF tools. Paid plans are available for additional features.
Free Version

Pricing Information

$99/month
Self-service:
- $99/mo (50 docs)
- $189/mo (100 docs)
- $449/mo (250 docs)
- $899/mo (500 docs)

Self-service Unlimited: $299/mo - no hard page or file limits, Word output, batch filling, eSignatures, HIPAA with BAA. Save 20% on annual billing.

Done-for-you automation: custom implementation fee plus monthly, priced to volume.

Free plan: 10 credits per year, renewed annually, first 2 pages per document, preview only.
Free Version

Supported Platforms

SaaS
Windows
Mac

Supported Platforms

SaaS
Windows

Customer Service / Support

Web-Based Support

Customer Service / Support

24 Hour Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Webinars

Company Facts

Organization Name

9 Rank LLC

Date Founded

2025

Company Location

United States

Company Website

pdf9.ai/

Company Facts

Organization Name

Botmakers LLC

Date Founded

2024

Company Location

United States

Company Website

instafill.ai

Categories and Features

AI PDF

Not specified

Categories and Features

AI PDF

Not specified

AI Tools

Not specified

PDF

Annotations
Convert to PDF
Digital Signature
Encryption
Merge / Append
PDF Reader
Watermarking

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