Telerik.Documents.Fixed 2026.3.923

Create & Edit PDF, Word & Excel Files in Web, Desktop & Cross-Platform .NET Apps

Telerik Document Processing Libraries provide a complete set of APIs for creating, importing, modifying, and exporting the most commonly used flow, fixed, and spreadsheet document formats - without any external dependencies or the need for UI components.

Supports .NET Framework, .NET Standard 2.0, and the latest .NET versions. See supported frameworks for details.

Documentation | Demos | Getting started instructions.

Available Libraries

RadPdfProcessing

• Create, import, and export PDF documents
• Merge and split PDF files
• Add and extract images, text, bookmarks, annotations, and forms
• Digital signatures and encryption support
• Import from PDF; export to PDF and plain text
• Supported formats: PDF, TXT

RadWordsProcessing

• Create and edit flow documents with rich text, tables, images, headers/footers, and more
• Mail merge and find-and-replace functionality
• Import/export across multiple formats
• Supported formats: DOCX, DOC, DOT, HTML, MD, PDF, RTF, TXT

RadSpreadProcessing

• Create and manipulate spreadsheet workbooks with formulas, formatting, filtering, sorting, and data validation
• Support for multiple worksheets, cell styles, and conditional formatting
• Import/export across multiple formats
• Supported formats: XLSX, XLS, XLSM, CSV, PDF, TXT, DataTable

RadSpreadStreamProcessing

• Generate and read large spreadsheet files with minimal memory footprint using a streaming approach
• Ideal for exporting massive datasets efficiently
• Supported formats: XLSX, CSV

RadZipLibrary

• Create, read, and update ZIP archives
• Compress and decompress streams with DeflateStream and GZipStream
• Supported formats: ZIP

Why Choose Telerik Document Processing Libraries?

No UI or Server Dependencies: Process documents entirely in code - no need for installed applications (like MS Office) or UI components on the server or client.

Cross-Platform Support: Build once and run on .NET Framework, .NET 8, .NET 9, .NET 10 for Windows, and .NET Standard 2.0 for maximum portability across web, desktop, and cross-platform apps.

Comprehensive Format Coverage: Handle the most popular document formats - PDF, DOCX, XLSX, CSV, RTF, HTML, TXT, and more - with a single set of libraries.

Trusted Enterprise-Grade Support

Get answers to your questions directly from the developers who build Telerik Document Processing Libraries. Build confidently with components backed by rigorous testing, scalable architecture, comprehensive documentation, and expert support.

Contact support

Useful links:

• Forum: Real-world questions, practical answers and developer-to-developer knowledge to help you troubleshoot faster and learn from shared experience.
• Feedback portal: Share your feedback on Telerik Document Processing Libraries, or request new features and capabilities to add.
• SDK Demos: Code examples demonstrating various document processing scenarios.

Copyright 2008-2026 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.

Packaged distributions of Progress Telerik Document Processing Libraries obtained from NuGet are made available solely as part of a license for Progress Telerik product(s) and pursuant to the respective Progress Telerik product(s) EULA, available at https://www.telerik.com/purchase/license-agreements, unless you have entered into a separate MSA with the licensor.