Compare the Top PDF Annotators as of July 2025

What are PDF Annotators?

PDF annotation tools are pieces of software designed to allow users to add notes and highlight text on PDF documents. They can be used by students or professionals to mark up documents, make comments, and organize information in an intuitive way. Annotations may also include drawing shapes or adding images. The annotations can then be saved with the document for easy sharing and future reference. Compare and read user reviews of the best PDF Annotators currently available using the table below. This list is updated regularly.

  • 1
    Adobe Acrobat Reader
    View, sign, collaborate on, and annotate PDFs with our free Adobe Acrobat Reader. Only with Adobe Acrobat Reader you can view, sign, collect and track feedback, and share PDFs for free. And when you want to do more, subscribe to Acrobat Pro. Then you can edit, export, and send PDFs for signatures. Do more than just open and view PDF files. It’s easy annotate documents and share them to collect and consolidate comments from multiple reviewers in a single shared online PDF. Work on documents anywhere using the Acrobat Reader mobile app. It’s packed with all the tools you need to convert, edit, and sign PDFs. You can use your device camera to capture a document, whiteboard, or receipt and save it as a PDF. Acrobat Reader is connected to Adobe Document Cloud, so you can work with your PDFs anywhere. You can even access and store files in Box, Dropbox, Google Drive, or Microsoft OneDrive.
    Starting Price: $1.95 per month
  • 2
    PDNob PDF Editor
    PDNob PDF Editor is an advanced, AI-powered solution designed to simplify and enhance PDF management for users on Windows and Mac. Offering a comprehensive suite of tools, it empowers users to view, annotate, edit, convert, perform OCR, organize, protect, and summarize PDFs effortlessly. Its intuitive interface makes navigating and managing documents a breeze, whether you’re working with simple files or complex projects. One of its standout features is AI integration, enabling intelligent document summarization and translation for seamless global communication. The Optical Character Recognition (OCR) tool converts scanned documents and images into fully editable and searchable files, turning paper-based workflows into digital efficiency. PDNob PDF Editor also excels at file organization, allowing users to merge multiple PDFs, split documents, compress file sizes, and rearrange pages with ease. Security is a priority, offering password protection and encryption.
    Starting Price: $35.99/year/1 user
  • 3
    Drawboard PDF

    Drawboard PDF

    Drawboard

    Drawboard PDF is the most intuitive PDF editing and markup app for Windows, iOS, macOS, android and web. Powerful PDF tools that feel good to use. Drawboard PDF – Get all the essential free. Mark up and edit any PDF with the ease of pen and paper. Drawboard Pro toolset - Upgrade to use advanced tools and Store+Share with your team. MARK UP AND DRAW All the drawing tools you need to mark and collaborate with the feel of pen and paper. INSERT Insert elements into your documents like, text, notes, callouts, signatures, images, audio notes, and more. MEASURE Take accurate measurements of elements on-page with technical measurement tools and calibration. MANAGE Local and Clouds PDFs in one place. Merge, split, reorder and compress COLLABORATE Real-time collaboration on-page in real time with instant syncing CROSS-PLATFORM Work from anywhere on any device, in real-time!
    Starting Price: $5.99 per month
  • 4
    PDF Reader Pro

    PDF Reader Pro

    PDF Technologies, Inc

    Back to School Bonanza! Enjoy 50% OFF on PDF Reader Pro and Filmage Screen Buy PC Version, Get Mobile Version Free Aug.15. 2024 - Sept.5. 2024 PDF Reader Pro is powered by PDF Technologies®, founded in 2014, which is a leading software provider of affordable, secure Out-of-Box PDF solutions on Windows, Mac, iOS, & Android. SMBs, IT service, and knowledge workers increase their productivity by using PDF Reader Pro to make workflow smarter. As the best alternative to Adobe® PDF solution, PDF Reader Pro is a PDF powerhouse that will fulfill all your document needs. We offer free Trial and education plans, as well as PDF Technologies’ Software Development Kits (ComPDFkit/SDKs) to help developers reduce costs and improve productivity by integrating industry-leading PDF technologies into application workflows. Welcome to try. If you are interested in being our reseller or distributor, you can check our official site->Business->Partnership Program.
    Starting Price: $19.99/one-time/user
  • 5
    Systweak PDF Editor

    Systweak PDF Editor

    Systweak Software

    Systweak PDF Editor is a powerful, easy-to-use PDF management tool for Windows that lets you view, edit, convert, merge, split, compress, and secure PDF files effortlessly. Whether you're a student, professional, or business user, this all-in-one PDF solution covers everything you need. You can edit text and images directly in your PDF, convert files to and from formats like Word, Excel, and JPG, and organize pages with drag-and-drop ease. With built-in OCR, you can extract editable text from scanned documents. Add annotations, comments, watermarks, and protect your files with password encryption or digital signatures. Batch processing makes handling multiple PDFs quick and efficient. Systweak PDF Editor is compatible with Windows 11, 10, 8.1, and 7, and offers a clean, intuitive interface ideal for all user levels. Experience a smarter, faster, and more secure way to work with PDFs.
    Starting Price: 34.98
  • 6
    HiPDF

    HiPDF

    Wondershare

    Wondershare HiPDF is an AI-powered online PDF solution that offers a wide range of features such as chatting with PDF, AI reading, editing, converting, and managing PDF documents. With its user-friendly interface and free plan, HiPDF allows users to easily summarize, explain, rewrite, merge, split, compress, convert, rotate, unlock, and protect PDF files with just a few clicks. As a member of the PDF Association and having received internationally recognized certifications such as ISO 27001 and SSI SECURE, HiPDF ensures both simplicity and security in editing PDFs, having processed millions of files cumulatively.
    Starting Price: $5.99 per user, per month
  • 7
    AmindPDF

    AmindPDF

    AmindPDF

    AmindPDF's user interface is very user-friendly and makes the operation of PDF easy. It can recognize PDF text as paragraphs or whole blocks of text, allowing users to edit text directly and smoothly, like in MS Word. for PDF protection, it allows adding passwords, setting document permissions, placing signatures, adding watermarks to PDF It also supports batch operations to process files, such as merge/split tool, compression tool, creation tool, Bates numbering tool, and conversion tool, so users can process multiple PDF files at once. AmindPDF is available for a number of platforms: Windows, iOS, and Android. Users are able to use the same PDF tool on a computer or mobile phone. So AmindPDF let you process or edit PDFs anytime, anywhere.
    Starting Price: $9.90
  • 8
    LightPDF

    LightPDF

    Wangxu Technology Co.,Ltd.

    LightPDF was designed to allow everyone to process PDF documents in the easiest way possible. Indeed, LightPDF comes with an easy-to-use interface. With this program, you can perfectly read PDF, edit or convert PDF. Built-in PDF editing features: Modify a PDF: add texts, annotate, insert links, add headers and footers. Convert PDF to other formats: Word, Excel, PPT, JPG, PNG, HTML, etc. Manage PDF pages: insert or delete pages, rotate pages, extract, replace, split or merge pages. Sign a PDF: add a manual or digital signature. Lock PDF: Add a password to your PDF document. Other tools: OCR, compress PDF, add background, etc. This all-in-one online PDF solution includes over 20 practical PDF tools which may simplify your digital work and boost productivity. You are able to edit, convert, compress, merge, annotate, watermark and manage PDFs or use the OCR functions without a hitch.
    Starting Price: Free
  • 9
    RadaeePDF SDK

    RadaeePDF SDK

    RadaeePDF

    This is the well-known SDK for Android, iOS and Windows UWP. Our team began its development in early 2012 and starting from May-2012 and we have never stopped improving it since. RadaeePDF Classic includes fully customizable frameworks respectively written in Java, Objective-C and C#. We complete the range with simplified Cordova and Xamarin plugins (Android and iOS). RadaeePDF Classic SDK has been adopted by more than 6000 SMB and large corporations in more than 8500 applications. Some of its included features are PDF read, different rendering layouts, support of PDF annotations, text search and extraction and dozens more. The Master Edition represents a huge step forward compared to the previous Classic version, and introduces advanced features like complete form fields manipulation, pdf linearization and optimization, xfdf import/export, signature and certificate handling, and much more.
  • 10
    CoolNew PDF

    CoolNew PDF

    CoolNew Software

    CoolNew PDF offers all-in-one experience to awesomize your PDF experience. All the tools you’ll need to be more productive and work smarter with documents.21 tools to convert, compress, and edit PDFs . Conversion features include CAD, office, image, texted and scanned copy conversions. Editing features include text, image, eraser, page number, size, watermark, paragraph and more. Users can combine or split PDFS, extract contents and optimize pdfs. merge and compress PDF. Reading and annotation features included. It edits, annotates, converts and combines file by one click, makes your tasks finish faster. CoolNew PDF offers you a familiar experience for editing PDF, just like you did it in Office.
    Starting Price: $6.49
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