.NET PDF AND IMAGE DOCUMENT PROCESSING SDK
Stop managing multiple libraries for document processing. GdPicture.NET SDK combines PDF editing and conversion, multi-language OCR, barcode recognition, intelligent data extraction, and TWAIN scanning in one NuGet package. Trusted by 20,000+ developers and thousands of companies worldwide for 15+ years.
Convert, edit, extract data, and automate workflows with in-process .NET APIs for desktop, server, and Windows service applications.
Enable browser-based viewing, annotation, and collaboration with DocuVieware HTML5 viewer for ASP.NET web applications.
Build faster with a single C# API that replaces a patchwork of PDF, Office, OCR, barcode, and scanning libraries. Process 100+ file formats entirely without external dependencies — cutting weeks of integration and maintenance while delivering enterprise-grade security, compliance, and automation for streamlined document workflows.
Display 100+ file formats, including PDFs, Office documents (DOCX, XLSX, PPTX), CAD files, bitmaps, and metafiles with a full-featured document viewer. Render documents fast, generate thumbnails, search text, and highlight regions for streamlined document review workflows.
Add, edit, and manage annotations on PDFs and images with tools for custom annotations, rubber stamps, sticky notes, freehand drawing, text comments, and redaction. Enable team collaboration with annotation import/export and PDF action support.
Protect documents with password encryption, digital signatures, and AES-256 encryption. Permanently remove sensitive data using irreversible redaction that strips content from PDFs, ensuring compliance with data protection regulations.
Digitally sign and validate PDF documents with support for PKCS#12 certificates, multiple signatures per document, timestamps, and Adobe-compatible signing modes. Extract signature details and verify document authenticity programmatically for secure digital workflows.
Enhance PDF readability with intelligent optimization that improves font rendering, image quality, and document structure. Apply color detection and character repair, and remove redundant content — delivering faster-loading documents with improved visual quality.
Convert 100+ file formats to ISO-compliant PDF/A for long-term archiving that passes veraPDF validation. Create fully searchable, compressed PDF/A files supporting all sub-standards for regulatory compliance and digital preservation.
Decode and generate 30+ linear (1D) barcodes and 5 major 2D symbologies, including QR code, Micro QR code, Data Matrix, PDF417, Aztec Code, and MaxiCode. Process 100+ file formats with AI-powered detection, error correction, and automatic preprocessing for reliable scanning.
Automatically identify and classify document types, including invoices, checks, forms, receipts, and structured documents using ML-based recognition. Assign confidence scores, categorize documents for workflow automation, and enable image comparison for compliance verification.
Reduce PDF file sizes dramatically with mixed raster content (MRC) compression that segments images and applies optimal algorithms to each area. Compress structured documents containing text, graphics, and images without quality loss — ideal for high-volume document archiving.
Print 100+ document and image formats programmatically or with dialog boxes. Control print quality, orientation, position, and color mode (black/white or color), and add watermarks. Start printing when a PDF opens, or print silently from Base64, blobs, URLs, or local files.
Extract data from semi-structured and unstructured documents and automate your processes with the GdPicture.NET intelligent document processing set of tools.
The key-value pair extraction engine can determine if there’s information with labels and values in a document, extract it, and qualify the value.
The GdPicture.NET smart redaction engine enables you to automatically and permanently remove sensitive and personal information from unstructured documents.
The GdPicture.NET table extraction engine enables you to automatically detect and extract data from tables located in any file, including scanned documents.
Convert between PDF and 100+ file formats in both directions. Transform Office documents (DOCX, XLSX, PPTX), images, CAD, SVG, HTML, and email into PDF — or export PDFs to Word, Excel, PowerPoint, images, and Markdown. Includes automatic compression, optimization, OCR for searchable text, and PDF/A for ISO-compliant archiving.
View, read, write, manage, and edit Microsoft Office formats (DOCX, XLSX, PPTX) and OpenOffice files without requiring MS Word, Excel, PowerPoint, or OpenOffice.org installations. No third-party plugins needed — process Office documents directly with native C# APIs for complete independence.
Clean up and enhance color and bitonal images with 50+ filters, including blur, sharpen, despeckle, deskew, noise removal, and red-eye correction. Preprocessed images deliver better accuracy for OCR text recognition, barcode scanning, compression optimization, and OMR form processing.
Integrate DocuVieware for zero-footprint document viewing, annotation, and editing across any browser and device. Eliminate client-side dependencies while delivering fast, secure document handling for nearly 100 formats — with 2,000+ server-side functionalities accessible via ASP.NET APIs.
GdPicture.NET SDK is built on 15+ years of innovation and delivers production-ready document processing with battle-tested reliability. Our SDK is deployed in millions of installations worldwide, and it combines enterprise-grade performance with straightforward licensing.
Proven in millions of production deployments across Fortune 500 companies and government agencies. More than 15 years of continuous development means edge cases are handled, performance is optimized, and your documents process correctly the first time.
Transparent per-developer pricing with no runtime fees or hidden deployment costs. Whether you’re a startup prototyping or an enterprise deploying to millions of users, pay for what you need, and scale without renegotiating. Perpetual and subscription options available.
Regular updates bring new capabilities — from AI-powered document recognition to PDF/UA accessibility support — without breaking changes to your existing code. We respond to real customer needs, not trends, ensuring every release adds measurable value to production workflows.
REVIEWS
Developers choose GdPicture.NET SDK for its reliability in production, responsive support, and complete feature set that eliminates vendor juggling. See why teams at Accenture, Deloitte, and NTT Data trust our SDK for mission-critical document workflows.
"Speed, ability, quality, and memory management seem to be spot on, especially compared to some imaging toolkits I’ve used over the last 25 years."
"Performance was fantastic. Best of all, it did not get in the way of our interface, a simple container that allowed me to add the buttons and functionality required on the form."
"Keep up the great work! I wish many other developers and support staff would take lessons from your team."
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