Best Free PDF Annotators of 2024

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.

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.

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

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.

Systweak's PDF Editor has a wide range of tools and features to work with PDFs. You can use them to mark text for redaction and OCR PDF. You can also sign, split, compressed, batch convert, lock or unlock, and make many other changes.

PDFgear is a PDF solution that allows users to view, edit, convert, sign annotate, organize and more on Windows, MacOS and iOS. PDFgear's clean and simple interface allows users to enjoy reading and editing documents without interruption. PDFgear Copilot is a personal assistant that offers more options than a standard document assistant. It's powered by AI so users can easily manipulate all the PDFgear features and chat with PDFs. You're lost in the vast array of functions and document content? Don't worry! Ask Copilot! You can ask Copilot anything! Processing PDFs is as easy as a stroll in the garden with PDFgear.

It's simple, but powerful! SignFlow makes it easy to read, annotate, edit, e-sign and fill secure PDFs. SignFlow is your best partner for PDF files. It comes with all the essential tools. SignFlow allows you legally-binding digital signatures in PDFs. It also makes it easy to create, edit, and fill out PDF forms. You can edit text in PDFs such as word, manage and edit pages, annotate, and view your PDFs. You can choose from different reading modes: Full-Screen (single page), Read Mode, Split View and Multi-tab. You can scroll pages smoothly and switch between night mode, day mode and eye protection mode. Keep an eye out for annotations! You can highlight, underline and strikethrough PDF texts. You can use colors to emphasize different information. You can enrich your PDFs using standard business stamps such as APPROVED, digital and dynamic stamps, or custom text/image stamps.

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.

Adobe Acrobat Reader is a free program that allows you to view, sign, collaborate, and annotate on PDFs. Adobe Acrobat Reader is the only free software that allows you to view, sign, track and collect feedback on PDFs, and share them. Subscribe to Acrobat Professional if you want more. You can then edit, export and send PDFs as signatures. You can do more than simply open and view PDFs. It's simple to annotate and share documents in order to collect and consolidate the comments of multiple reviewers into a single online PDF. Acrobat Reader Mobile lets you work on documents from anywhere. It has all the tools needed to convert, edit and sign PDFs. You can save a receipt, document, or whiteboard as a pdf by using your device's camera. Acrobat Reader can be connected to Adobe Document Cloud so that you can work on your PDFs from anywhere. You can also access and store files on Box, Dropbox Google Drive or Microsoft OneDrive.

UPDF allows you to edit, annotate, and manage PDF on Windows, Mac, iOS, Android, and Android. All the tools you need to organize, edit, annotate and manage your PDF files are available in one smart, all-rounder smart app. It was specifically designed to satisfy the needs of most users who want a beautiful yet easy-to-understand interface that is not only for beginners. Key Features 1. Edit PDF Document You can add, delete, and edit text properties and formats, such as font style, font color and size. You can also crop and rotate, replace, remove, or extract images. 2. Annotate PDF - Highlight, underline, or strike out any parts. For a faster and easier way to add text, you can also add shapes, sticky note and text boxes. 3. PDF Page Management Rotate, delete and extract PDF pages. 4. Navigate and View PDF Files - Flexible reading mode, such as single-page mode or double-page mode.

You can convert, create, edit OCR, compare, sign, and even OCR PDFs. You can customize the interface language and its appearance, from light to dark themes, to make it easier to work with PDFs. You can customize your conversions by choosing a page, paragraph, or a single line to convert. Convert complex PDF table data to Microsoft Excel using a custom PDF to Excel converter. Smart Layout Detector allows you to keep the table styles intact. Edit PDF text and pages. Annotate and remove PDF content. Sign PDF documents. Fill, edit, and create PDF forms. Split documents into multiple parts. Convert scanned PDFs into English, French and Spanish. Batch PDF conversion can be automated by storing large numbers of PDF files in queues and even entire directories. Batch create PDFs from a variety of formats and merge them all into one file. Add passwords and file permissions to create secure PDFs from existing pages or blank pages. Able2Extract Professional: Your Swiss Army Knife to create PDF files.

KDAN PDF Reader is a comprehensive PDF document service that leverages AI-driven technology to provide robust PDF capabilities. It enhances user efficiency in creating, managing, and sharing documents, streamlines business workflows, and transforms documents into invaluable digital assets through information exchange. Accessible on both mobile devices and desktops, KDAN PDF Reader is utilized by over 100 million users worldwide. It is widely used by educational institutions, government organizations, and businesses. KDAN PDF Reader provides flexible licensing options through its Licensing Service Center, complemented by comprehensive customer support, tailored to meet the diverse user requirements. Key Features: - Advanced AI capabilities: Translation, automatic detection and redaction of sensitive data, AI analyst Chatbot, table extraction, and document comparison. - Edit text in PDFs. - Secure documents with watermarks or PDF encryption. - OCR Convert PDF scans or images into searchable PDF files. - PDF management options include splitting, merging, and compression. - Seamless PDF conversion capabilities.

TinyWow offers free online conversions, pdf, and other useful tools to help you solve all kinds of problems. After one hour, all files are deleted, both processed and unprocessed. Convert PDF to JPG, and download each page as a picture. Convert PDF to PNG, and download each page as a picture.

Xodo allows you to edit, annotate and sign PDFs on your desktop, mobile, or web. Xodo makes it easy to work with PDFs. No more printing or faxing! You can sign contracts, expense reports and cover letters on your smartphone or tablet with just your finger or stylus. It's that easy! Sign any document with just your finger, instead of searching for a pen or printing ink. You can save your signature and sign any future documents with just one tap or click of the mouse. Save the file and share it with anyone who needs it. It takes only seconds to do what used to take many emails back and forth. Xodo takes stress out of filling out forms. You can complete forms from your smartphone or tablet anywhere you are by simply tapping on the screen to fill in fields and selecting checkboxes. You can save time and energy. Fill out forms on your smartphone or tablet and save them to share with anyone who needs them.

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.

LightPDF was created to make it easy for anyone to use PDF documents. LightPDF has an intuitive interface. This program allows you to read, edit, and convert PDF documents. Built-in PDF editing capabilities: 1. Modify a PDF: Add text, annotate and insert links. You can also add headers or footers. 2. Convert PDF to Word, Excel, PPT or JPG. 3. Manage PDF pages: Insert or delete pages, rotate pages and extract, replace, split, or merge pages. 4. Sign a PDF: Add a manual signature or digital signature. 5. Lock PDF: Add a password for your PDF document. 6. Other tools: OCR and compress PDF, add background, etc.

All-in-one online PDF editor, free of subscriptions and installations DeftPDF is an online tool that allows you to edit and convert your PDF files in just a few clicks.

You can copy and paste PDF text, annotate PDFs and fill out interactive PDF forms. With a lightweight and completely free Slim PDF Reader, you can also validate digital signatures that you have received on Windows, Mac, or Linux. It has a Dark theme that will save you battery and reduce eye strain. Slim PDF Reader is a desktop PDF reader that is small and lightweight (download size 15 MB), fast and easy to use system resources, and 100% free of bloatware.

You can review documents faster. You can quickly find facts. Discover connections that others overlook. LiquidText allows you to go beyond the limits of paper. LiquidText is a document analysis tool that allows you to take notes and highlight text. It's not much different from the sticky notes, margin notes, and highlighting we have used for years. While most apps can replicate paper, more than 80% of knowledge workers still prefer to use paper at school and work. LiquidText goes beyond paper. LiquidText captures your reading, notes and highlights just like paper. But it goes further to show their connections to other sources and to map your project in a clear, shareable format. We turn your ideas into ideas and connect them to related notes. Every observation, note, and idea can be connected with others. A single tap can show these relationships and original context.

MiniTool PDF Editor allows you to edit all of your PDF files. You can convert them to different formats, combine multiple documents into one, split a document into multiple files, and annotate the documents with various writing tools. MiniTool PDF Editor allows you to convert PDF files in many formats. Any PDF document can be converted to the following formats: Microsoft Word and Microsoft Excel, Microsoft Powerpoint, JPG and PNG, BMP, TXT and HTML, EPUB, CAD and XPS. You can convert any document in any of these formats into a PDF. This is how you can convert an ordinary image into PDF in just seconds. You can do the same with a spreadsheet. MiniTool PDF Editor is a great app that allows you to modify PDFs quickly and easily. You'll find it easy to use all the features.

A web-based PDF and Kindle annotation management system that will save you hours of tedious work. In a matter of seconds, you can have your PDF annotations and Kindle annotations ready for download in different formats. We can summarize annotations from PDFs, Kindle books, and Instapaper articles. You don't have to search for an annotation tool that can be used to extract annotations from PDFs or books. Sumnotes is the best, most simple and robust way to extract annotations from PDF books. You can import and sync annotations from multiple platforms with one click. Importing your entire library is easy with our batch import capability. We support PDF documents that have been annotated in any PDF software, including Adobe products or Preview on Macs. We are excited to announce that we now support Kindle highlights!

PDF Converter converts any file on your iPad into a PDF document. You can open and download files from the cloud, e-mail, or web directly on your iPad. Then convert them to PDFs. This is the purpose of PDF Converter, and it does it well. You can save everything, from multi-million dollar contracts to web pages, as a PDF in a matter of seconds. PDF Converter can create PDFs from any type of file, including email attachments, MS Office files, photos, web pages and more. Once your PDF is complete, you can view, annotate and edit it, or merge it with the powerful tools of PDF Expert. Because we are in complete control of the process, the results are exact and exactly the same as the original documents. It is also 100% secure because it is done locally on your iPad. You don't need an active internet connection to keep your documents safe.

Solutions for document processing, analysis, and conversion. Innovative solutions for document imaging, document management. Imaging technologies. We have been developing solutions for managing electronic documents locally and online since 2003. Below is a list of technologies that ORPALIS uses: Full PDF support. View, process, annotate and compress all PDFs using WIA and TWAIN scanning. All scanners and acquisition devices can be managed. Barcode reading and writing. 1D and 2D (Datamatrix. QR-Code. Micro QR-Code. PDF417. Hyper-compression Mixed raster. Content compression, Color Detection and JBIG2 & JPEG 2000 compress. Formats support. View and convert documents in more than 100 formats. Optical Character Recognition, (OCR) Extract text from scanned images. Recognition of form/templates. Form processing and automatic document recognition. Annotations. You can use a variety of tools to annotate documents online and offline.