PDF annotation tool for researchers - AI tools

Highlights is an AI-powered PDF reader and research tool that transforms PDF annotations into organized notes with features like multilingual OCR, citation lookup, and smart export capabilities.

• Freemium
• From 5$

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

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

aiPDF revolutionizes document interaction through AI-powered summarization, data extraction, and conversational analysis. This cloud-based solution offers secure processing of various file types with instant citation-backed responses.

• Freemium
• From 9$

Macro is an AI-powered PDF reader designed to transform academic, legal, and finance documents into interactive and intelligent resources, enhancing understanding for professionals.

• Contact for Pricing

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

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

• Free

Bard PDF is an AI-powered tool that enables users to interact with PDF documents through natural language conversations, offering features like summarization, information extraction, and Q&A capabilities.

• Free

PDFConvo allows users to interact with their PDF documents through chat, enabling quick summarization and understanding of the content.

• Freemium

BrainyPDF enables users to interact intelligently with PDF documents through AI-powered chat, summarization, and analysis features.

• Contact for Pricing

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

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

• Other

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

xpdf.ai is an AI-powered PDF assistant enabling users to chat, search, and analyze PDF documents. It extracts insights from text, figures, and tables, offers summarization, and generates reports to enhance productivity.

• Freemium
• From 10$

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 Talk is an AI-powered platform allowing users to interactively chat with PDF documents for summarization, question answering, and multi-document querying.

• Freemium
• From 6$

PDF Summarizer uses AI to rapidly condense large PDF documents into concise summaries, saving users valuable time. It supports over 90 languages and is trusted by over 100,000 users.

• Free

PDFPeer is an AI-powered tool that enables users to interact conversationally with PDF documents, allowing them to ask questions, get summaries, and extract information quickly from various types of documents.

• Freemium
• From 15$

PDF GPT leverages AI to summarize, translate, and extract information from your documents, providing citations for enhanced research and productivity.

• Free

AI PDF Reader is an intelligent document analysis tool that combines AI and NLP to read, summarize, and translate PDFs while offering interactive chat-based assistance for instant answers.

• Free

NoteButler automatically adds AI summaries to PDFs, websites, YouTube videos, and podcasts in Notion, making them searchable. It performs OCR on PDFs to extract text and create concise summaries.

• Paid
• From 2$

Anara is an AI-powered research assistant designed to help users understand complex documents, organize findings, and write well-cited papers, supporting various file types and offering collaborative features.

• Freemium

Lateral is an AI-powered research assistant that helps academics and researchers search, save, and organize findings across papers, making research up to 10x faster with intelligent document processing and organization features.

• Freemium
• From 12$

Pdfy is an AI-powered tool that enables users to chat with and extract information from various content sources including PDFs, audio files, websites, and YouTube videos.

• Freemium
• From 9$

PDF AI is an AI-powered research assistant that allows users to interact with PDF documents through chat. It facilitates effortless exploration of academic literature and other PDF documents.

• Paid
• From 9$

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

Hylinker is a browser extension that enables users to annotate webpages and PDFs, connecting notes, images, and videos with bi-directional links. It supports integration with popular note apps, offering both offline-first capabilities and real-time synchronization across devices.

• Freemium
• From 2$

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$