Best PDF Annotators with a Free Trial of 2025

Apryse, formerly PDFTron, is reimagining the world of documents. Bring accurate PDF viewing, annotating, editing, creation, and generation to any web, mobile, desktop or server framework or application. Apryse technology supports all major platforms and dozens of unique file types, including support for PDF, MS Office, and CAD formats. Own the full document and data lifecycle by deploying on your own infrastructure without worrying about third-party server dependencies.

Nutrient provides an extensive solution for all your PDF requirements, delivering tools that seamlessly operate PDF features across any platform. 1. SDK: Incorporate advanced PDF functionality into iOS, Android, Windows, web, or any cross-platform technology, supplying abilities like PDF viewing, annotation, collaboration, and beyond. 2. Libraries: Employ our powerful .NET and Java libraries to enhance your backend applications with batch processing of redactions and PDF forms, OCR'd scanned text, and PDF document editing, all directly from your application server. 3. Processor: Our agile PDF microservice, Processor, enables rapid generation of PDFs from HTML, including HTML forms, as well as Office-to-PDF conversions, OCR, redaction, and XFDF combining and exporting. 4. PDF API: Take advantage of our hosted PDF API to generate, convert, and alter PDF documents in your workflows. We handle the development and server management, freeing you up to concentrate on your business. At Nutrient, we're not just a tool; we're a committed ally in your success. Gain direct contact with our engineers for expert guidance, utilize comprehensive examples to simplify integration, and make the most of our top-tier documentation.

Global OEMs, SaaS and enterprise end-users rely on Adobe PDF Library to automate the creation, editing and management of PDFs. An Adobe partner, our SDK uses the same source code as Acrobat for stability, reliability and quality results. Languages: .NET, .NET Framework, Java and C/C++ Platforms: Windows, Linux & MacOS Package managers: NuGet & Maven Capabilities include but are not limited to: -Annotations -Content creation -Content modification -Color management -Extraction - text, images, forms -Compression/optimize -Conversion - PDF/A, PDF/X, EPS, PostScript, XPS, ZUGFeRD, color -Display, Printing -Extract text, images & other content -Forms - Import, export, flatten static & dynamic XFA forms, AcroForms -Images - extract, import/export, thumbnails, render/rasterize pages, separations -Optimization - size, content, images, etc. -OCR - add text to document, add text to image -PDF to Office Documents (Word, Excel, PPT) -Security - Viewer settings, redactions, password, encrypt/decryption, watermark Pricing options for OEMs, SaaS & end-users are flexible and based on usage. Shorten development times & get to market faster with Adobe PDF Library. Free trial - download today.

MobiPDF (formerly PDF Extra) is an intuitive reader and editor that allows you to read, edit, create, OCR, organize, annotate, fill and sign, convert, and share any PDF. This makes MobiPDF an excellent choice for users seeking a budget-friendly alternative to Adobe Acrobat Pro. HERE’S WHAT YOU GET WITH MOBIPDF: Multiple Page View Modes: Enjoy a distraction-free "Read Mode". Advanced Editing Tools: Experience a Word-like PDF editing environment. Two-Way Conversions: Convert PDFs to and from Word, Excel, PowerPoint, or image formats. OCR Support: Make scanned documents searchable. Markup Tools: Highlight, comment, strikethrough, stamp, and more to enhance your documents. Effortless PDF Organizer: Reorder, compress, split, and combine PDFs with ease. Sign & Secure: Add signatures, create and fill forms, and protect your PDFs with passwords, encryption, and digital certificates. Offline Mode: Work freely on your projects, even offline. Seamless translation: One-click translate any PDF into 50+ languages.

SwifDoo PDF is an All-in-One PDF Maker, Reader, Editor and Converter for Windows SwifDoo PDF enables users to create, convert, merge, compress and sign PDF documents with minimum effort. The intuitive design tool also enables you to insert links or images to PDFs. The PDF document can be converted to Microsoft Word, Excel, PowerPoint, JPG, PNG, TIFF, BMP, and vice versa. You can also convert CAD to PDF. The PDF compression module integrated with SwifDoo PDF is optimized for file size without quality loss. SwifDoo PDF has a number of special features for scanning copy convert. Besides many convert features. PDF Reader PDF Annotation (Including Stamp) Picture/image Extraction (only need copy and paste from PDF) PDF Edit PDF Compress PDF Merge PDF Split PDF Signature System Requirements: Windows 10/7/8/vista/XP Edition: SwifDoo PDF 2.0.1.9

Install-free PDF editing, form filling, redaction, signing, viewing, and more on your website with RAD PDF! Packaged as an easy to use library / WebControl (compatible with .NET 3.5+, .NET Core, and .NET 5+), RAD PDF can be used with just about any flavor of ASP.NET including MVC, Razor, Blazor, WebForms, and more. RAD PDF is compatible with 99% of internet browsers, including those on Linux, Mac OS X, Microsoft Windows, and mobile. No plugins. No Adobe Reader. RAD PDF is more than a PDF to HTML converter. It natively supports all the most common PDF features including annotations, bookmarks, form fields, page labels, and more. With advanced PDF options, RAD PDF allows you to selectively enable and disable features not available with Adobe Acrobat Reader, like protecting a PDF from being downloaded while still viewable online. RAD PDF users can use PDF form fields directly from the web browser by enabling PDF form filling and PDF form saving without having to install any software. Integrating directly with ASP.NET, RAD PDF allows your web application to capture input data, build custom workflows, and provide an intuitive graphical user interface (GUI) for just about any online PDF interaction imaginable!

PDF Tools for you to be more productive with PDF documents. Free and easy to use! Add text, images, freehand annotations to PDF. Fill forms. Create your own signature and sign document. Send PDF files safely and securely with a link that automatically expires, zero-knowledge end-to-end encryption with 256-bit AES.

Create, review and edit PDF Documents with this full-featured PDF editor available for Windows, Mac, and Linux. PDF Studio is easy to use and a dependable substitute for PDF editors such as Adobe® Acrobat®. It contains all the PDF features and tools needed at a much affordable price, maintaining full compatibility with PDF standards. PDF Studio Standard Features: -Create PDFs -Scan to-PDF -Annotate and markup PDFs -Precision Measuring Instruments -Fill in and Save PDF Forms -Secure Documents -Append/Delete Pages -Create Watermarks, Headers, Footers -Loupe, Pan & Zoom, Rulers, etc... -Document Storage Integrations -DocuSign Integration -Supports PDF 2.0 standards PDF Studio Pro Features: -All features in Standard, Plus... -Interactive Form Designer -OCR (Text Recognition). -Content editing (Text and images) -Redact & Sanitize PDFs -Compare PDFs -Optimize PDFs -Digitally Sign PDFs -Advanced Imposition

Drawboard PDF - Powerful PDF tools. Most intuitive PDF editing and markup app for Windows, iOS, macOS, android and web. Drawboard PDF – All the essentials free! Mark up and edit any PDF with the ease of pen and paper. PDF MARKUP TOOLS TO HELP YOU WORK WONDERS. DRAW All the inking tools you need to markup and collaborate with the feel of pen and paper. INSERT Insert anything you need; text, notes, callouts, signatures, images, audio notes, and more. MEASURE Measurement tools for technical teams in Architecture, Construction Manufacturing and more. Get accurate measurements of elements on-page with easy calibration. ORGANIZE Keep all your docs in one place, local and cloud. Merge, split, compress and rearrange PDFs with ease. CROSS-PLATFORM Work from anywhere on any device, in real-time! COLLABORATE Instant collaboration right on the page. Do work where work is done. Invite team members to your canvas. Share your doc using the Drawboard Cloud – a new home for PDFs. Designed to replace pen and paper with an extensive array of tools and an intuitive interface to make going paperless the easier choice.

PDF.live allows you to convert PDFs into any other file format and vice versa. Convert Word documents, Excel sheets, PowerPoint presentations, and JPEGs. PDF.live works on any device connected to the internet and is cloud-based. This means that you don't have to download or install anything. Simply drag the document and follow the prompts to sign, annotate and edit text. You can also compress, merge, and compress your documents with this free online PDF editor.

PDNob PDF Editor is an advanced, AI-powered PDF management tool designed to streamline document workflows for users on both Windows and Mac. It offers a comprehensive set of features that enable users to view, annotate, edit, convert, organize, and protect PDF files with ease. The software’s intuitive interface ensures that users of all experience levels can efficiently navigate and manage their PDF documents. Key features include Optical Character Recognition (OCR) for converting scanned PDFs and images into fully editable and searchable text, as well as AI-driven document summarization for quick content overviews. PDNob PDF Editor also supports merging, splitting, compressing, and organizing PDF files, making it an ideal solution for managing large volumes of documents. Additionally, the software offers robust security features like password protection, encryption, and permission management to safeguard sensitive information. With its seamless cross-platform support and powerful editing capabilities, PDNob PDF Editor is suitable for a variety of users, including professionals, businesses, educators, and students. Whether you need to create, edit, secure, or analyze PDFs, PDNob PDF Editor provides an all-in-one solution.

PDF Reader Pro is a PDF powerhouse that will fulfill all your document needs. Building on solid features such as read, annotate, edit, OCR, Sign, Create & Edit & Fill fillable PDF Forms, bookmark, outline, TTS, table, Create, Convert and manage PDF files regardless of the device you are using. Whether you are using an iPhone to create a PDF document or signing a PDF contract with your Android device, PDF Reader Pro lets you do all the thing you need to do effortlessly. Other features include Presentation, Link, Stamp, Compress, Security, Background, Header, Footer and Page, Bates Numbers, Text Search, Text Box, Touch Bar Support, export annotation, multiple conversion support. The best PDF to Office Converter! Export from PDF to Microsoft Word (.docx), PowerPoint (.pptx), Excel (.xlsx), RTF, HTML, Text, Image, CSV, and more Offline. PDF to Image. Convert PDFs to JPG, PNG, bmp, gif, tiff, tga and jp2

KDAN PDF Reader is your all-in-one PDF solution. Edit, sign, OCR scan, convert, annotate, and fill forms in PDF documents. With innovative AI features, speed up your document workflow! Designed for Mac, iPhone, and iPad, KDAN PDF Reader is trusted by millions for its comprehensive features and efficiency. **Spring Sale: Work smarter with KDAN PDF Reader—get 40% OFF Document 365 AI+, our AI-powered, cross-platform subscription. Offer ends May 8. KEY FEATURES EDIT TEXT & PDF • Fix errors and typos directly in PDF - replace, add, or delete text in PDFs • Add, edit, crop, and adjust images in PDFs • Add header & footer • Add Bates numbering for easy reference, tracking, and organization • Use stamps or dynamic stamps to indicate status, provide feedback, and highlight information in a document CONVERT PDF • Offline file converter - convert file without an internet connection • Convert PDF to Office file formats, image, or ePub • Format supported- docx, xlsx, csv, pptx, rtf, txt, html, jpg, png, BMP, jpg200, pub, MOBI SIGN & FORMS • Fill & edit forms • Create fillable forms with buttons, checkboxes, and list boxes • Create signature and sign on PDF • Create signatures using trackpad, keyboard, or images EDIT PAGE • Merge & split PDFs • Extract, rearrange, rotate, delete, and crop PDF pages • Change PDF background color • Append pages from

Systweak PDF Editor provides a variety of features and tools for editing and managing PDF documents. With these capabilities, users can redact text, perform OCR on PDFs, sign documents, split files, compress them, convert multiple files at once, lock or unlock PDFs, and make various other modifications. This makes it a versatile solution for anyone needing to handle PDFs efficiently.

Add robust PDF features to your apps with the easy-to-integrate MuPDF SDK/ The small yet fast viewer supports a number of document formats including PDF, XPS, OpenXPS, CBZ, and ePUB. The renderer is designed for high-fidelity anti-aliased graphics and renders text with metrics and spacing accurate to within fractions of a pixel. The PDF library includes interactive features such as annotations, form filling, digital signatures, redactions, and search. The command-line tools provide users myriad customization options for rendering and converting documents, and manipulating PDF files. MuPDF supports document conversion to other formats including HTML, SVG, and CBZ. In addition to the C library, there's a Java library using JNI that works for both Oracle's Java and Android. In addition to the Java API, C++ and Python bindings have been developed. MuPDF supports most of the major coding environments and operating systems. It is highly flexible and optimized for each unique platform. MuPDF API has been used as the PDF engine in a variety of deployments ranging from Android and iOS mobile applications, SaaS and cloud solutions, document management programs, and embedded products, to name a few.

Transform, generate, modify, perform OCR, contrast, and endorse PDFs seamlessly. Adjust the interface's language and visual style between light and dark themes to enhance your PDF experience. Personalize your conversions by choosing specific pages, paragraphs, or even individual lines for accurate transformation. Utilize a specialized PDF to Excel conversion feature to accurately extract intricate table data into Microsoft Excel, complete with a Smart Layout Detector to preserve original table formatting. Revise text and pages within PDFs, while also providing options to annotate and redact sensitive information. Sign your PDF documents effortlessly and fill out, modify, or create PDF forms as needed. Divide documents into uniform sections for easier handling. Convert scanned PDFs in multiple languages, including English, French, Spanish, and German. Streamline the batch conversion process by queuing numerous PDF files or entire directories for efficiency. Create PDFs in bulk from a variety of formats and consolidate multiple PDFs into a single document. Secure your PDFs by adding passwords and setting file permissions, whether starting from blank pages or existing files. Able2Extract Professional serves as your all-in-one solution for managing PDF files effectively. With its extensive features, it ensures you have all the tools necessary to handle any PDF task with precision and ease.

Simple yet powerful, SignFlow transforms the way you interact with PDFs by making reading, annotating, editing, signing, organizing, and filling out secure documents a breeze! Equipped with a comprehensive suite of essential PDF tools, SignFlow stands as your ultimate companion for managing PDF files. With SignFlow, you can seamlessly add legally-binding digital signatures to your documents while enjoying a user-friendly solution for creating, editing, and completing PDF forms. The platform allows for easy text editing within PDFs akin to word processing, enabling you to manage and modify PDF pages with ease, as well as annotate and view your files effortlessly. Experience various reading modes, including Full-Screen, Single Page, Read Mode, Split View, and Multi-tab for maximum convenience. You can navigate smoothly through pages and effortlessly toggle between day mode, night mode, and a special eye-protection mode for those long reading sessions. Make your notes stand out! Utilize highlighting, underlining, and strikethrough options to emphasize important texts in your PDF documents. Choose from a palette of colors to draw attention to different pieces of information. Additionally, enhance your PDFs with standard business stamps such as APPROVED, along with digital, dynamic, and customizable text/image stamps for a professional touch. Whether for work or personal use, SignFlow is designed to enrich your PDF experience and streamline your workflow.

novaPDF can create PDF files from any printable document. This includes emails, MS Office documents, web page, and text. It acts as a printer driver, and you can print from any Windows program that supports printing. Simply set novaPDF Pro to be your default printer and the document will convert and be saved as a PDF file. You can customize the resolution, security, profile, bookmarks, text/image compression and more.

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, OCR, signing and managing PDF documents. It also provides many image tools. HiPDF is easy to use and has a free plan. It 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. Top Features: AI read: Summarize, rewrite, explain and chat with PDFs with the AI PDF reading assistant. Convert PDF: Convert PDF documents to and from any Microsoft Office format or image. Merge PDF: Combine PDF files online. Compress PDF: Reduce the size of your PDFs online easily. Sign PDF: Quickly and securely fill and sign PDFs from any device, anytime, anywhere. Protect PDF: Protect PDF from copying, editing, printing and viewing with passwords. Keep sensitive data confidential.

CoolNew PDF is a software with many features to manage PDF documents. Editing, converting, splitting, combining, annotating, and protecting your files is a taste of what the app can do, but it doesn't stop there. The program comes with a flashy interface, but it is intuitive and easy to navigate. Using the ribbon, you can sift through the categories of available functions. Each ribbon entry comes with its own toolbar containing functionality specific to its description.  CoolNew PDF can export most Office documents to and from PDF. The same rule also applies to images. Merging, splitting, and extracting pages and images are the most basic features a PDF manager can have, but they are essential. In addition, it is possible to apply watermarks and encrypt files easily, when protection is needed, and an OCR tool can help extract text from images, which can save a lot of time. hit.

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. Edit PDF Text: AmindPDF allows the user to change the font, font size, font color, and font style, and reset the alignment of pdf text. Edit Images: The user can select the images in pdf, then manipulate the images: replace an image, rotate the image, crop the image, or remove the image. AmindPDF can combine more than one PDF or image file into one PDF. The file name of being combined files will be used to build the outline of the combined pdf.

Conholdate.Total is the complete package for all.NET APIs offered by Aspose or GroupDocs. This allows developers to perform a wide variety of document processing tasks within their own.NET based apps. This.NET package provides all-in-one solutions for all types document management systems. It allows you to create, edit and print, view, sign, compare, sign, automate and convert between a variety of popular document formats. Conholdate.NET allows you to process a multitude of file formats. File formats can be opened, modified, converted, and modified easily. Conholdate.Total.NET currently supports the following file types: Microsoft Word documents Microsoft Excel spreadsheets Microsoft PowerPoint presentations Adobe PDF documents Microsoft Outlook Microsoft Project files More than 100 other file formats

Enhance any PDF file by adding notes and annotations such as comments, corrections, signatures, highlighting, and even incorporating photos, designs, and drawings. You can easily share these annotated documents with colleagues, send them via email to clients, partners, or the original authors. With just one click, you can remove or hide all markups, making it simple to clean up your document. Additionally, you can merge multiple documents, copy, rearrange, or delete pages as needed. Utilize PDF Annotator as a "digital whiteboard" to deliver engaging presentations during meetings or lectures. For lengthy documents, you can make concise comments, fill out or sign forms and agreements, and conveniently return them through email. Review, proofread, and make corrections directly on your screen while jotting down notes and sketches right on the pages. Moreover, you can efficiently grade student assignments from your desktop, laptop, or Tablet PC, ensuring a seamless workflow. This versatility allows for an organized and productive approach to document management and collaboration.

Accelerate your document reviews and uncover facts with ease while discovering connections that others may overlook. LiquidText transcends traditional paper methods, as note-taking and document analysis tools have remained largely unchanged, relying on margin notes, highlights, and sticky notes that have been utilized for ages. Despite the rise of digital apps, a significant percentage—over 80%—of knowledge workers continue to favor paper in their professional and academic settings. However, LiquidText advances beyond these limitations by effectively capturing your reading materials, notes, highlights, and annotations, while also exposing the relationships among them and the source content. This innovative tool organizes your project’s elements in a clear and shareable format, allowing for a seamless connection between related notes and ideas. With just one tap, you can visualize these interconnections and access the original context, making it easier than ever to craft comprehensive reports from your insights. By transforming how you interact with your documents, LiquidText empowers you to work more efficiently and creatively than ever before.

JPedal makes it easy to work with PDF files in Java. All common tasks can be solved by simply adding a few lines code to your application. IDRsolutions has been actively developing the software for more than 20 years. It can work with any problem PDF files. JPedal supports all PDF 2.0 file specifications, including Encyption and Blending, Forms and Annotations, PostScript and OpenType fonts. JPedal comes with lots of sample code and APIs that can be easily integrated into your code. Adding a feature to your code requires only 2-3 lines of code. JPedal uses its own font engine and custom images libraries to produce high quality images and provide maximum Java performance. JPedal is actively being developed with nightly builds as well as monthly releases. The same people who code the code also provide support.