MuPDF is a lightweight PDF and XPS viewer and toolkit written in portable C. It is known for its speed and small...
Best Nutrient SDK Alternatives ranked by AI · updated Aug 2026
Nutrient SDK is a commercial document SDK for embedding PDF viewing, annotation, editing, forms, signing, and document collaboration into software. It serves product teams building polished document experiences on web, iOS, Android, Windows, and other platforms.
Top 6 Nutrient SDK alternatives
PDFium is an open-source C++ PDF rendering and parsing library used by Chromium and other applications. It is aimed at developers embedding...
Pros
- Battle-tested through Chromium and compatible with major PDF features
- Open source with no per-user licensing cost
- Supports rendering, forms, annotations, and PDF JavaScript
Cons
- Lower-level integration than commercial PDF SDKs
- Build and API maintenance are more demanding than PDF.js
- Documentation and developer tooling are less polished than commercial alternatives
ComPDFKit PDF SDK is a cross-platform software development kit for embedding PDF viewing, editing, annotation, forms, conversion, and signing into applications. It...
Pros
- Broad PDF feature coverage including annotations, forms, editing, conversion, and digital signatures
- Supports major mobile, desktop, and web development platforms
- More customizable for embedded applications than hosted PDF tools
Cons
- Pricing and licensing require contacting sales
- Smaller ecosystem and community than Adobe or open-source PDF libraries
- Some advanced functionality may vary by platform
Custom quote
Foxit PDF SDK provides tools for viewing, creating, editing, and securing PDFs for developers.
Pros
- Robust PDF manipulation capabilities
- Developer-friendly documentation
Cons
- Limited free trial version available
- Advanced features may require additional licensing
Contact for pricing details
5
iText is a commercial PDF library for Java and .NET.
Pros
- Extensive documentation
- Commercial support available
Cons
- Paid license required
- Limited features in free version
Commercial
6
PDF.js is a JavaScript library for rendering PDF documents in the browser.
Pros
- Browser-based
- No server-side processing required
Cons
- Limited manipulation capabilities
- Performance issues with large documents
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