Feature-Rich C# .NET PDF API Library for Total Document Control
Document Solutions for PDF (DsPdf, previously GcPdf) allows you to generate documents with speed, memory efficiency with no dependencies.
- Generate, load, edit, and save PDF documents in C# .NET
- Support multiple languages with full text, paragraph formatting, and fonts
- Redact content from PDFs with the new redaction tool
- View or embed audio and video content in PDF
- Multiple options for optimizing PDF documents
- Support hundreds of PDF features
- All features are fully supported on Windows, macOS, and Linux
- Includes a JavaScript PDF Viewer to view and optionally edit PDF documents with two options - Client-based PDF editing with Wasm and Server-based editing with DsPdf.
Overview
A C# .NET PDF document API library allowing developers to programmatically create and manipulate PDF documents at scale. Document Solutions for PDF (DsPdf) allows developers to import/export, create AcroForms (PDF Forms), and deploy PDFs across desktop and web applications.
Benefits of a C# .NET PDF API
Fast and Efficient
Save memory and time with the lightweight API architecture to generate and work with PDF documents in C# .NET effortlessly.
Comprehensive API for Adobe PDF
Generate, edit, and store feature-rich PDF documents without compromising design or features. This API conforms to Adobe PDF specification 2.0. Provides a client-side JavaScript PDF Viewer.
Feature-Rich API
Generate PDF forms with everything from signatures to security features. Or create PDF files with everything from text, images, audio and video. You can add, delete, copy and move pages, change page sizes, orientation, generate linearized PDFs, add annotations, redact content from PDF documents, and compress PDF files.
Complete Text Support
DsPdf includes text and paragraph formatting, special characters, multiple languages, RTL support, and vertical and rotated text for all supported platforms.
Full .NET Support for Windows, Linux, and MacOS
Develop for any .NET platform and major operating systems with a single code base. Use in your apps for .NET Core, .NET Framework, Mono, Xamarin.iOS, and Xamarin.Android.
Deploy Apps with PDFs to the Cloud
Cloud-based deployment means you can be everywhere. With NuGet and DsPdf, you can deploy to Azure, AWS, and AWS Lambda.
Linearize Existing C# PDF Documents
Linearize any existing PDF document and save the document in any 3 modes - Default, Linearize and Incremental Update (for signing existing signed documents)
Delete or Replace Text in C# .NET PDF Documents
Update PDF documents by replacing or deleting text.
Extract Data from PDF Documents in .NET 6
Copy/Export table data or tagged content from PDFs using DsPdf and DsExcel .NET, an Excel API library.
Redact Content from PDFs in C# .NET
Mark and remove sensitive, confidential content from PDF documents with redact annotations. The marked content can be erased or masked with a rectangular or polygonal reaction area.
Convert HTML to PDF with No Dependencies
- Render a URL or HTML string to PDF
- No dependency on GPL/LGPL licensed software
- Use the same browser instance to render multiple pages
- Modify/replace the HTML page content
View or Add Rich Media
View PDF files having embedded media content. Or create a PDF by adding audio and video files along with other content.
Advanced Font and Language Support
Dozens of fonts and options support various styles and multiple languages, including Arabic, Hebrew, Hindi, and Japanese.
PDF Digital Signatures in C# .NET
Implement signatures with image-based visual signatures, or digitally for document security and workflow management using X509 certificates. Use incremental updates to add multiple signatures to PDFs.
Full Annotations Support
Annotations are fully supported for PDF Spec 2.0, including adding, modifying extracting, and deleting annotations from documents.
Support for PDF-Based Fillable Forms
DsPdf simplifies PDF form creation and management. It enables users to add, modify, and delete various form fields like text, checkboxes, radio buttons, and signatures, making it easy to create interactive, fillable forms within your PDF documents. Additionally, DsPdf offers seamless import and export of form data for efficient data handling.
Programmatically Work with PDF Layers
Add, edit, and remove layers of PDF documents programmatically using C#. DsPdf allows users to create layers, associate content (such as content stream, FormXObject and annotation) with different layers and set their properties. Specific content sections can be selectively viewed or hidden.
Draw Complex Table Layouts on PDFs
Make use of new TableRenderer API to create tables with complex layout, merge cells, rotate text direction in cells and draw custom content in the cells.
Work with Encrypted PDF Files without Specifying the Password
Edit and save an encrypted PDF by either adding new objects or read/write properties provided they are not based on PDF strings.
Client-Side and Server-Side PDF Solution
DsPdf comes with a Standard license for Document Solutions JavaScript PDF Viewer (DsPdfViewer). Together they are a powerful PDF solution that provides robust functionality for both client-side and server-side PDF processing.
With DsPdf, users can easily create, modify, and manipulate PDF documents programmatically on the server-side using the .NET platform.
DsPdfViewer offers a feature-rich and customizable PDF viewer for client-side PDF viewing. The DsPdfViewer also offers a Professional license enabling features such as document editing, PDF form-filling, collaborative editing capabilities, and much more.
The DsPdfViewer Professional version provides two editing options - server based (requiring connection to a .NET sever running SupportApi and DsPdf), and a client-only option with Wasm editing.
Our Top C# .NET PDF API Features
Quick Start
This quick tutorial walks you through creating a simple "Hello, World!" app that uses DsPdf to generate and save a C# .NET PDF file.
Document Properties
Make viewing faster with linearized PDFs. Documents properties include metadata, compression, and font embedding behavior. Restrict printing, copying, and PDF editing.
Print PDF Documents to Printer
Print PDF document directly to a printer on Windows platform.
Fonts
Create, initialize, and use the Font Collection class to manage and use when rendering texts.
Page Headers
Print page headers and footers in PDF documents. Organize pages by headings to help users get a sense of the page’s organization and structure.
Merge Pages
Combine and organize multiple documents into one PDF–making it simple to share and send render pages of one PDF to another.
Attachments
Attach photos, text, drawings, PDFs, and other file types (including AcroForm) to a PDF. If you move the PDF to a new location, the attachments move with it.
Text
Review the basics of rendering text in DsPdf (DrawString and DrawTextLayout), character formatting, paginated text, text trimming, word, character wraps, and much more.
Images
Generate pages of slides from all images in a directory, extract and remove images from PDF Documents.
Draw Complex Table Layouts
Use the new TableRenderer API to create tables with complex layouts, merge cells, rotate text direction in cells, and draw custom content in the cells.
PDF Report Templates
Automate and customize documents and report generation. PDF Templates allow you to bind HTML templates to various data sources by using report templates that generate PDF files from HTML.
Annotations
Create, edit, or delete annotations from existing PDF documents. Several annotations are supported from PDF specifications.
Advanced Text
Design magazine style, multi-column page layouts with balanced columns and outlines. Multi-language text is supported, including RTL, east-Asian languages, and vertical text.
Rich Media
Create, edit or view PDF files having embedded media content either in audio or video format.
Navigation
Create text links to a URL and add outline entries. Link thumbnails to full-sized images, article threads, and destinations.
HTML to PDF
Convert HTML files or strings to PDF, or add HTML fragments to PDF documents along with other content.
Extract
Load existing PDF into DsPdf and see how text, paragraphs, and tables can be inspected or extracted.
Redaction
Completely remove content from PDF documents, including quadrilateral and polygonal redaction areas.
Form Fields
Create AcroForm fields include textbox, checkbox, radio button, combtext, combo box, list box, and buttons. Also, set field format for TextField, CombTextField, ComboBoxField.
PDF Layers
Add, edit and remove layers programmatically. Associate PDF content (part of content stream, FormXObject, Annotation or PDF document) with a layer in PDF document.
Digital Signatures
Digitally sign PDFs, inspect signature properties, or remove existing signatures. Add Image signatures to PDF Documents.
Security
Encrypt or decrypt PDF Documents. When a document is encrypted, its contents become unreadable. An authorized user can decrypt the document to obtain access to the contents. If a PDF document is password encrypted, the user must enter the password in order to view the document.
ZUGFeRD Compliant
ZUGFeRD is a standard for electronic invoices in PDF/A format and based on the ISO standard. Create ZUGFeRD 1.x compliant invoices and read ZUGFeRD data from existing PDFs.
Password-Protected PDF Files
Password-protected PDF files can be opened through the password input dialog or even without specifying the password.
JavaScript PDF Viewer
Check out even more great features of Document Solutions PDF Viewer.
Linearize Existing PDF Documents
Linearize any existing PDF document and save the document in any 3 modes - Default, Linearize and Incremental Update (for signing existing signed document)
Delete Text
Find and delete text from PDF documents using two options - Standard or PreserveSpace.
PDF to Images
Save a PDF as a multi-page TIFF, JPEG, PNG, GIF, or BMP image to save space and open easily.
Read Structure Tags
Extract whole logical structure of the PDF document, parsed the tags, glean the data that needs to be extracted.
Visit Our C# .NET PDF API Samples
Your full-fledged ASP.NET Core sample browser includes all major features, real-time PDFs, and use cases. These PDF files are generated using server-side code with DsPdf and loaded in the JavaScript client-side Document Solutions PDF Viewer. You can download individual .NET Core samples that can run as standalones in C# and VB.NET. The demos also include full sample code in C# and VB with comments along each step for quick onboarding.
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