Best Web-Based PDF Encryption Software of 2025

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.

SodaPDF is the software solution that will help your business achieve any document goal quickly and easily. You can edit, create, convert and sign PDFs according to your requirements. Use the best PDF editor and converter to modify documents. Our PDF tools are easy to use and can be used to simplify any document workflow. Our Batch tool is the fastest Microsoft Office-to PDF converter on the market. It allows you to create multiple PDFs or convert them all at once. You can also add page numbers, watermarks and Bates numbers to multiple files or folders. Our E-Sign feature allows you to sign, manage and track electronic signatures remotely. OCR Edit saves time and eliminates the need to retype text. It allows you to quickly search, recognize and modify any image or scanned document. Access the entire Soda PDF suite of tools and services from your desktop or any device that has a web browser.

pdfRest API Toolkit was made by developers, for developers. Rapidly integrate PDF workflows with your business applications, simply and seamlessly. pdfRest API Toolkit includes all the PDF processing tools you'll need, designed and developed by digital document experts with decades of experience to make your job easy: PDF to Word, PDF to Excel, PDF to PowerPoint, Add to PDF, Extract Text, Query PDF, Convert to PDF, PDF to Images, Convert to PDF/A, Convert to PDF/X, Compress PDF, Linearize PDF, Flatten Forms, Flatten Transparencies, Flatten Annotations, Flatten Layers, Merge PDFs, Split PDF, Encrypt PDF, Decrypt PDF, Restrict PDF, Watermark PDF, Import Form Data, Export Form Data, OCR PDF, Upload Files, Zip Files. Clear documentation with intuitive endpoints and parameters. Start with sample code in .NET, JavaScript, Python, PHP, and cURL for every endpoint. Gold-standard processing powered by Adobe® PDF Library™. Free to get started with no commitment. Affordable pricing for projects of all sizes. pdfRest was designed for developers, by developers to make working with PDFs as easy and intuitive as possible. Flexible APIs can be called from any language capable of making an API request. Send your first API call in

Foxit PDF Editor allows you to edit, view, create, organize, share, collaborate, secure, OCR, export and esign your PDF documents. Suitable for both SMBs and Enterprise, across desktop, mobile and web-whether you’re at the office, home or on the go. Affordable and easy to use with a low learning curve, which is perfect for remote workers and global companies, who can share, collaborate and provide feedback 24/7, anywhere in the world. Foxit PDF Editor is suited for individuals and groups who have to create, review, edit, manage, share and secure PDF documents. Foxit PDF Editor Pro offers additional features, including editing, collaboration and security capabilities which are often required in larger sized companies.

Smallpdf, a Swiss company, is made in Switzerland, the land where watches, banks and clean design are all present. Smallpdf has won numerous awards for its innovative document management tools. Smallpdf was founded in 2013 and provides a simple, reliable, and secure solution to complex, awkward PDF software. Smallpdf is the most trusted and loved PDF software on the planet. It has served over 500 million users and 100,000 companies in 24 languages and in every country around the globe, including Antarctica. Smallpdf seamlessly integrates with professional and personal tasks, increasing productivity and simplifying how people manage their documents. With tools to compress, convert and edit, sign, protect and unlock PDF documents in just few steps,

PDF24 provides a range of user-friendly online tools for managing PDF files, developed by geek software GmbH, a German firm that has been operating since 2006. This platform offers complimentary solutions for various PDF-related challenges, both through downloadable software and web applications, including the popular PDF24 Creator and a suite of online tools. Despite being a compact team, the PDF24 staff is deeply committed to enhancing PDF solutions that benefit countless users globally. Their dedication has led to the successful launch of the PDF24 Creator and Online Tools, which have garnered millions of users worldwide. In addition to these tools, PDF24 also features PDF24 Fax, an online faxing service designed for those who wish to send and receive faxes without needing a physical fax machine. This commitment to innovation continues to make PDF24 a go-to resource for all things PDF.

Watermark PDF, Add to PDF, Query PDF, Convert to PDF, PDF to Images, Convert PDF Colors, Convert to PDF/A, Convert to PDF/X, Compress PDF, Linearize PDF, Flatten Annotations, Flatten Layers, Flatten Transparencies, Merge PDFs, Split PDF, Encrypt PDF, Decrypt PDF, Restrict PDF, Extract Text, OCR PDF, Upload Files, Zip Files. Our RESTful API is ready for production, so you don't have to reinvent the wheel when creating your own products and solutions. You have full control over your backend infrastructure. Our private cloud service allows you to control the entire process, including the documents. pdfRest API Toolkit Self-Hosted can be set up in just a few clicks from the AWS Marketplace. You can self-host a production-ready server to integrate the API in your own service or to automate your internal document workflow. Pay-as-you go pricing. Many business applications require complete ownership of your backend with very little or no communication with outside servers. You can create an EC2 instance to host our API, which will give you complete ownership of all files on your server.

Introducing a PDF editor designed for the demands of contemporary work environments, making it effortless to convert and edit. You can efficiently handle all your PDF files from a single platform. Simply launch PDF Master and drag the PDF you wish to alter into the interface. Utilize the editing tools to incorporate various elements such as text and images. After reviewing the changes, you can approve the document and either download or share it directly. Our advanced encryption technology guarantees that your private information is safeguarded throughout the conversion process. Rest assured, we uphold your privacy with top-notch security measures. There’s no need for any software downloads or extensions; our solution works seamlessly across desktops, laptops, tablets, and smartphones, supporting major operating systems like Windows, macOS, iOS, and Android. You can convert files anytime, anywhere, on any device using just your web browser, with no technical expertise needed. Just upload or drag and drop your file onto the platform, select the desired format, edit as you wish, and we’ll handle everything else with ease. Experience the convenience and security that comes with our intuitive PDF editing solution today.

Locklizard protects PDF files from piracy, leakage, and misuse. Unauthorized access to documents is prevented and only authorized users are allowed to use them. Stop the theft of confidential and sensitive information, intellectual properties, training courses, reports, ebooks, and other trade secrets. Securely share and sell documents, prevent data leakage, and enforce compliance. You can lock documents to devices and locations, dynamically add watermarks, control expiry, stop printing and copying, and revoke access at anytime. You can track how your documents are used. Locklizard employs strong encryption, DRM, and licensing controls that are US Gov strength to ensure that your documents remain fully secure regardless of where they are located.

PDFescape offers a complimentary online platform for editing PDFs and filling out forms. This user-friendly tool allows individuals to read, modify, and design PDF documents without needing any specialized software, making it a great alternative for those who want to manage their PDF files easily. Accessible through any modern web browser with an active internet connection, PDFescape provides a variety of features including the ability to add text, shapes, and whiteout areas within PDF documents. Users can also crop, deskew, rearrange, delete, or insert pages as needed. The platform enables the creation of links to other PDF pages or external websites and allows for modification of PDF metadata. Security features include the option to encrypt documents with a password. Additionally, users can insert images and sign documents digitally using a scanned signature. Filling out forms is made easy with support for existing fields or by utilizing the text tool. It supports essential types of fields such as text boxes, checkboxes, radio buttons, lists, and dropdown menus, along with basic calculation and formatting capabilities for PDF fields. Furthermore, users can easily navigate between fields using the tab key, ensuring a streamlined experience.

You can easily drag and drop files from Windows Explorer directly into PaperScan, which provides details regarding the resolution, dimensions, and color mode of the images. The software also supports PDF encryption, allowing it to read encrypted PDFs and generate new PDFs with encryption features. Additionally, it offers bitonal filters that can effectively eliminate isolated pixels or modify characters through dilation and erosion. Users can enhance their documents with various effects, such as contour, sepia, or scanline, and utilize tools like a freehand pen, rubber stamp, ruler, polygon ruler, and both standard and freehand highlighters. Furthermore, PaperScan includes functionalities for automatic color detection, detection and removal of blank pages, and adjustments for color attributes including brightness, contrast, saturation, and gamma levels, providing a comprehensive solution for image and document management. This extensive set of features makes PaperScan an ideal tool for users looking to streamline their document processing tasks.

Icecream PDF Editor is a free, intuitive PDF editor for Windows. It allows you to create and modify PDF files. There are four main modes of PDF editing: Edit, Annotate and Manage pages. You can also fill in forms. The PDF editor allows you to edit text and objects, add comments, manage pages, merge PDFs and protect files. The best PDF Editor will greatly increase your productivity while managing your PDF files. You can edit any text in a PDF file with ease. Visually combine, reorder, split, and merge PDF pages. Create PDF documents easily from scratch. For document protection, you can set passwords or limit editing/copying rights. In-built forms can be completed in PDF documents. You can add notes, highlight areas and strike through or highlight text. Quickly search through the document before editing. For faster and better PDF proofreading, create custom stamps.

FormatPDF is a website that offers a variety of online tools to work with PDF documents. These tools include PDF conversion, merging, splitting, compression and encryption, as well editing and annotating PDF files. FormatPDF allows users to convert a variety of document formats into PDF. This includes Word, Excel and PowerPoint. You can also merge multiple PDF files into one document or split large PDFs into smaller ones. FormatPDF.com provides tools for converting and manipulating PDF documents. FormatPDF.com also offers features to improve the security and quality of PDF documents. The website offers tools to compress PDF files. This can be used to reduce large documents' sizes for sharing and storage. If they have the right credentials, users can encrypt PDF files using passwords to restrict access or decrypt protected files.

The DRM-X 4.0 content protection system introduces an enhanced security framework along with sophisticated security functionalities. This platform allows for the secure distribution of protected content, including Audio/Video, PDF files, web pages, images, and JavaScript, across various devices such as Windows, Mac, iPhone/iPad, and Android. By utilizing DRM-X 4.0, you can effectively tackle the challenges of content delivery and sales that arise from piracy. Developed by Haihaisoft, this digital rights management solution operates as a service, offering comprehensive protection features. Key components of the DRM-X platform include File Encryption, Audio/Video Encryption, PDF Encryption, and HTML DRM Encryption, all integrated with advanced DRM capabilities. Users can easily manage their accounts, oversee groups, and adjust rights and license profiles online. As a next-generation DRM software platform built on the Xvast browser, DRM-X 4.0 supports both online and offline playback while enhancing the overall user experience. Additionally, it offers dynamic watermarking options for protected digital assets, ensuring a higher level of content security. This innovative approach aims to empower creators by providing them with the tools needed to safeguard their intellectual property effectively.

Enhance your projects by incorporating powerful PDF editing, parsing, and rendering capabilities using a sophisticated PDF library SDK. This versatile multi-platform shared library (available as dll, so, and dylib) features a C-compatible interface that supports various programming languages, including C#.Net, Python, Java 8, and C++ 11. With APIs designed for Linux, Windows, and Mac, this SDK includes numerous interface functions that allow for the transformation and creation of new PDF content, offering extensive options and flexibility tailored to the unique requirements of your project. It efficiently leverages multi-core CPUs for stream decoding and content rendering, adhering closely to the guidelines of the portable document format specification. Users can also apply electronic signatures, with the choice of including or excluding a cryptographic security layer. Additionally, the SDK provides robust PDF encryption and decryption capabilities, featuring a password-based encryption handler, along with comprehensive document structure manipulation tools for creating, deleting, moving, inserting, extracting, resizing, and rotating pages. This ensures that all aspects of PDF management are covered effectively, making it an invaluable resource for developers.

Files are transmitted through a secure, encrypted channel, ensuring their safety throughout the process. Once the files have been handled, they are completely erased from the system. For images, they are enhanced and saved at a JPEG quality setting of 65%, which is generally suitable for a variety of uses. However, if you require higher quality, there is an option to adjust the settings for better image resolution, though this may result in larger PDF file sizes. Files are consistently secured during upload and maintained in a protected state until they are permanently eliminated after processing.

PDFTool prioritizes user privacy as an online tool for managing PDF files. Users can effortlessly merge PDFs, split documents, and extract text from scanned files without the need for an account or navigating through ad-filled sites. Since all operations are conducted directly in the browser, users have the option to go offline after accessing the necessary tool page. This feature guarantees that your important PDF documents remain confidential and shielded from prying eyes. Additionally, the simplicity of the interface allows for a user-friendly experience, making PDF management accessible to everyone.