annotate pdf files easily - AI tools

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

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

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$

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

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

• Free

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$

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

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$

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

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

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

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

• Other

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$

PDF to Handwritten is a free online tool that converts text-based PDFs into handwritten-style text. Choose from multiple handwriting fonts, customize ink color and page layout, and preview in real-time.

• Free

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

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

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

• 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$

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