WebViewer: JavaScript Document SDK for PDF, Office & CAD | Apryse

Render and process documents all within the security of the browser
Embed document processing into your backend applications
Deliver consistent document experiences for mobile form factors
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High-quality document scanning solution
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Fast, accurate, and easy-to-use mobile data capture
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The leading library for creating and manipulating PDF files in Java and .NET
Platform Integrations
End User Applications
Edit, merge, and sign PDFs in one solution
Securely send, approve and sign documents online
Smart Data Extraction
Document Manipulation
Mobile Document Scan
Form Creation & Filling
Architecture, Engineering & Construction
Pharma & Life Sciences
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WebViewer is a client-side SDK for high-fidelity document viewing, annotation, conversion, and editing across 30+ formats, including PDF, Office, CAD, and images, with no server dependency.
WebViewer 12.0 is now available.The legacy UI has been retired, with a single supported customization model, a smaller download, and a tightened CSP.
WebViewer runs the document layer of applications, where the document is the work: contracts that get signed, claims that get approved, and filings that have to be exact. More of that content now comes from an LLM or an extraction pipeline, but review can’t be automated. Someone still has to verify what the model produced.
WebViewer is where that verification happens. High-fidelity rendering, search, redaction, annotation, comparison, and editing sit beside the source document in your own UI, so a reviewer can confirm or correct model output and act on it without switching tools.
WebViewer’s editing add-ons extend the core viewer with PDF, DOCX, and spreadsheet editing. Enable each capability as needed using the same API and UI framework, so the integration and interface stay consistent across all three.
Users can edit text and images directly inside a PDF, and rearrange paragraphs and images on the page
Full Word editing: text and paragraph styling, tables, headers and footers, images, and track changes, all on the original DOCX
Enable editing of XLSX, XLS, and CSV with cell formatting, formulas, multi-sheet workbooks, and charts, in a familiar grid
Add 35+ annotation types or build custom markup tools, with support for collaborative review.
Allow users to edit PDF text and images in your app, including styling and font adjustments.
Identify changes using overlays, side-by-side views, and semantic text comparisons.
Search for and permanently remove sensitive content from text and images, including full-page redaction.
Create, edit, and populate forms using data from any source or existing templates.