PDF annotation tool - AI tools

PDF Reader Pro is an all-in-one PDF solution for viewing, editing, converting, annotating, and form-filling across Mac, Windows, iOS, and Android. It integrates AI features like translation, summarization, and rewriting to enhance document workflows.

• Pay Once

Afirstsoft PDF is an AI-powered PDF editor for creating, editing, converting, annotating, and organizing PDF documents across multiple platforms, featuring AI summarization and chat.

• Freemium

Advanced PDF Editor is an all-in-one PDF editing solution for Mac, offering over 40 features to edit, merge, convert, sign, and secure PDF files with ease and efficiency.

• Freemium
• From 4$

PDF Bob is a free online PDF editor that allows users to edit, annotate, create, and manage PDF documents without watermarks or ads.

• Free

Win PDF Editor is a Windows-based PDF editing software that enables users to modify PDF documents by adding text, inserting images, drawing shapes, removing content, deleting pages, and redacting confidential information. It also includes a PDF converter for transforming documents into various editable formats.

• Other

Xodo is an all-in-one document solution offering powerful tools to manage, edit, convert, and sign PDFs, Office files, and images across web, desktop, and mobile platforms.

• Paid
• From 10$

Sejda is a comprehensive PDF editing and management platform offering over 30 browser-based tools for tasks like editing, merging, splitting, converting, compressing, and securing PDF documents.

• Freemium
• From 8$

ComPDFKit provides comprehensive PDF SDKs for developers, enabling integration of PDF viewing, annotation, editing, conversion, and AI-driven document processing functionalities into applications across multiple platforms.

• Free Trial
• From 67$

Smallpdf offers a suite of 21 tools to convert, compress, edit, and sign PDFs for free. Simplify your document management with a user-friendly interface and secure processing.

• Free Trial

I, Librarian is an online reference manager and PDF organizer that centralizes document storage, enables full-text search, and facilitates private group collaboration for students and research professionals.

• Other

GoodAnnotations provides AI-powered tools for drawing, editing, and annotating PDFs and screenshots to boost productivity and collaboration in digital workflows.

• Other

UPDF is an AI-powered PDF editor available across multiple platforms (Windows, Mac, iOS, Android). It offers a comprehensive suite of PDF tools and AI features.

• Freemium

PDF Editify offers a user-friendly platform for fast and easy PDF editing, allowing users to fill, edit, sign, redact, OCR, and create PDF forms with a focus on simplicity and security.

• Freemium

PDFAid is a comprehensive online PDF solution offering over 50 free tools for editing, converting, and signing PDF documents with powerful OCR capabilities and cross-platform accessibility.

• Free

PDFinity is a comprehensive online PDF management platform offering tools to edit, convert, compress, split, merge, and sign PDF documents without requiring software downloads.

• Freemium

PDF PDF offers a comprehensive suite of free online tools for all your PDF needs, including conversion, merging, splitting, compression, and more.

• Free

ZetPDF is a high-performance .NET SDK that enables developers to create, edit, convert, protect, and print PDF documents without requiring Adobe Acrobat, featuring a 100% managed C# codebase with its own rendering engine.

• Pay Once

pdfAssistant.ai is an AI-powered assistant that automates PDF processing tasks. It allows users to convert, compress, summarize, and modify PDFs through a natural language chat interface.

• Freemium
• From 13$

PDFgear is a comprehensive, AI-powered PDF management solution offering free tools for reading, editing, converting, merging, and signing PDF files across multiple devices without requiring registration.

• Free

ILovePDF3 provides a comprehensive set of free online tools for editing, converting, and managing PDF documents, images, and other file formats, catering to both individuals and businesses seeking simple digital document solutions.

• Free

iLovePDF is a comprehensive online platform offering a full suite of PDF editing, conversion, and management tools designed to streamline document workflows for individuals and businesses.

• Freemium
• From 9$

SwifDoo PDF is an AI-powered, all-in-one PDF software providing tools for viewing, creating, editing, converting, merging, compressing, and managing PDF documents efficiently. Its AI capabilities include summarizing, translating, explaining, proofreading, and rewriting content within PDFs.

• Freemium
• From 5$

API2PDF provides a powerful REST API enabling developers to generate, convert, and manipulate PDFs and documents at scale using leading rendering engines and serverless infrastructure.

• Usage Based
• From 1$

Annotations is a Mac application that simplifies document annotation with highlights, keywords, and notes while maintaining document clarity, designed for researchers, students, and data analysts.

• Free

Systweak PDF Editor is an all-in-one Windows software that enables users to edit, convert, sign, protect, and compress PDF files with advanced features including OCR and batch processing.

• Freemium

DeepPDF is an AI-powered tool for interacting with PDF documents. It allows users to chat with PDFs, summarize content, translate, analyze images and formulas, and convert files, simplifying research and document management.

• Freemium

PalyPDF is an AI-powered PDF management tool that enables users to chat with, search, summarize, and organize PDFs in over 85 languages.

• Freemium
• From 5$

HiPDF is a comprehensive online PDF tool offering editing, conversion, compression, and merging features, enhanced with AI for summarization, translation, and interaction.

• Freemium

Nitro offers user-friendly PDF editing and secure eSigning solutions to enhance document workflow efficiency for teams and organizations. It features AI tools for task automation and insights while ensuring data privacy.

• Free Trial

Gemini PDF is an AI-powered tool offering a comprehensive suite of features for processing and managing PDF documents, including conversion, editing, organization, and security.

• Free