ASP.NET PDF Redaction Library
Nutrient Web SDK is a JavaScript library for permanently redacting content in PDF documents (not just obscuring it). It is fully compatible with ASP.NET and offers developers a robust API to automate redaction, as well as a beautiful UI for creating, previewing, and applying redactions in any ASP.NET-based web app.
Nutrient SDKs are trusted by world’s most popular applications, including Autodesk, Disney, UBS, Dropbox, IBM, and Lufthansa. Nutrient’s powerful solutions enable seamless integration of PDF editing features into your applications, delivering reliability and efficiency to world-class enterprises.
Key capabilities
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Create, preview, apply — Programmatically or using the UI
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True redaction — Permanently remove content (not just obscure it)
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Search and redact — For strings, preset patterns, or regex
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Client-side — Redact directly in the browser (no server needed)
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Customizable — Trigger workflows, adjust colors, and overlay text
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Browser support — Works on all modern browsers and devices
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Extendable — Add editing, bookmarks, OCR, and more
Guides for redaction
Introduction to redaction
Learn about the basics of PDF redaction
Programmatic redaction
How to use the API to programmatically redact content from PDFs
Redact preset patterns
How to automate redaction by searching for preset text patterns
Redact regex patterns
How to automate redaction by using regex patterns in text search
Search and redact
How to automatically create redactions based on search criteria
Built-in redaction UI
Learn about the document operations available in the redaction UI
FAQ
Here are a few frequently asked questions about redaction in Nutrient Web SDK.