Try Our Live Demo
Document security libraries
Choose the right document library
Select PDF, Word, Excel, or PowerPoint libraries based on the document format and required protection operations. Multiple libraries can be combined when an application works with several document types.
PDF library
Apply encryption, password protection, and document permission settings to PDF files. PDF protection is suitable for documents that require controlled access or restrictions on supported document operations.
Framework: .NET · Flutter · JavaScript
Word library
Configure passwords, editing restrictions, and protected document sections in Word files. Word protection is suitable for documents that require defined editing permissions or restricted access to selected content.
Excel library
Apply worksheet, cell, and workbook-level protection settings to Excel files. Excel protection is suitable for workbooks that require controlled editing of spreadsheet data, formulas, or workbook structure.
PowerPoint library
Apply encryption, write protection, and read-only settings to PowerPoint presentations. PowerPoint protection is suitable for slide decks that require controlled access or editing before distribution.
Framework: .NET
Secure documents and sensitive data
Apply encryption, permission controls, and content protection to safeguard confidential information, maintain document integrity, and support secure document workflows.
Encrypt documents with password
Protect PDF, Word, Excel, and PowerPoint documents using supported password and encryption settings. Password-based protection is suitable for documents that require access controls before storage or distribution.
Restrict document permissions
Configure format-specific permissions and protection settings for supported document actions. Document permissions are suitable for workflows that require different levels of access or editing control across document types.
Protect editable sections
Allow users to edit approved content while keeping the remaining document protected. Suitable for workflows requiring controlled updates from multiple contributors.
Frequently Asked Questions
Can Syncfusion .NET Document SDK remove document security from documents?
Yes. The Document SDK can remove password protection and editing restrictions. Provide the correct password, unlock the document, and save an unprotected version when needed.
Can Syncfusion .NET Document SDK apply password protection across document formats?
Yes. The Document SDK libraries apply password protection to PDF, Word, Excel, and PowerPoint documents. Only authorized users can open and access protected content.
Does document security in Syncfusion .NET Document SDK require Microsoft Office or Adobe dependencies?
No. The Document SDK applies document security without Microsoft Office, Adobe, or third-party services. Protection features work across Windows, Linux, Docker, and cloud environments.
Can Syncfusion .NET Document SDK secure financial and confidential business files?
Yes. The Document SDK libraries secure contracts, reports, financial records, and other sensitive files. Apply passwords, permissions, and editing restrictions before sharing.
Which .NET platforms are supported by Syncfusion Document SDK document security features?
The Document SDK libraries support platforms for the web (Blazor, ASP.NET Core, ASP.NET MVC), mobile (.NET MAUI, UWP), and desktop (Windows Forms, WPF, WinUI, .NET MAUI, UWP).
Can Syncfusion .NET Document SDK protect Word documents from unwanted modifications?
Yes. Document SDK libraries support editing restrictions, read-only access, and section-level protection. Protection features restrict unauthorized changes to content, formatting, and document sections.
Resources
Learn more about our Document SDK
Explore demos, KB articles, and documentation to get the most out of our Document SDK.
Explore guides, APIs, and quick-start tips
See live use cases in action
Ask, share, and connect with peers
Find solutions and best practices fast
Get expert help when you need it
Feature requests and bug reports
Track issues and suggest improvements
Awards
Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion® is proud to hold the following industry awards.
