Developers
WebViewer: JavaScript Document SDK
Trusted by thousands, WebViewer delivers high-fidelity viewing, editing, annotation, conversion, and more across PDF, DOCX, spreadsheets, CAD with a single component. Customize the modular and accessible UI, ship faster on any framework, and power human review in LLM-enabled apps.
Fully Featured Out of the Box
Get to market faster by leveraging WebViewer’s out-of-the-box UI and deep feature set. Deliver exceptional usability and functionality backed by years of testing and thousands of customer use cases
Annotation and Collaboration
Choose from 35+ annotations or build custom markup tools. Then, leverage out-of-the-box modules to enable real-time collaboration.
Digital Signatures
Create complete, custom signing workflows, including signature field assignment, signature creation, collection, and validation.
Redaction
Eliminate confidential information by searching and redacting sensitive keywords, strings, and patterns. Redact areas of images and text, or entire pages.
Page Manipulation
Add, remove, rearrange, or merge pages easily by clicking or drag-and-drop page thumbnails, or set up a programmatic workflow.
Create Forms
Simplify form filling with features that automate data entry into your database. Fill, edit, and create new forms. Populate data from any source into existing templates.
Document Generation
Embed a scalable and secure document generator that merges Office templates with JSON data client-side, right in the browser.
Comparison
Easily identify changes in drawings and documents with intuitive overlays, side-by-side comparisons, and semantic text differences in highlighted word pairs.
Text Editing
Have users edit PDF text and images in your app with a leading-accuracy editor that embeds directly. Apply or change existing styling or font sizes.
Measurements
Streamline estimates via a fast, precise measurement tool. Set drawing scale, and measure distance, area, perimeters, and more with snap-to geometry.
DOCX Editing
Edit and create DOCX files client-side: Write and edit text, apply styling, adjust fonts and sizes, or add bulleted and numbered lists. Eliminate post-edit formatting inconsistencies with native DOCX editing, producing true WYSIWYG output quality across all Word processors.
Spreadsheet Editor
Bring Excel-style viewing and editing into your application with Spreadsheet Editor, allowing users to work with XLSX files securely in-browser, no downloads required.
WebViewer FAQs
Integration is simple. Just add the WebViewer library to your project and initialize it with a few lines of JavaScript. WebViewer provides ready-to-use examples for React, Angular, and more. Check out the Getting Started Guide or the interactive demo to learn more.
When building LLM-enabled applications, the last mile is where trust is won. WebViewer keeps reviewers in the flow with high-fidelity rendering, precise search, true redaction, and review features all inside your UI. That translates directly into the metrics that matter: more time in app, fewer context switches, and faster approvals.
WebViewer is fully client-side and runs in the browser using modern web technologies such as WebAssembly. It does not require Adobe Acrobat, Microsoft Office, or any additional plugins.
The Apryse Web SDK supports WCAG accessibility criteria across its core add-ons, WebViewer, DOCX Editor, and Spreadsheet Editor, with a unified, accessible UI. Features such as full keyboard navigation, ARIA support, screen reader compatibility, and customizable focus indicators are built into the Web SDK’s modular architecture. These capabilities enable developers to meet WCAG 2.2 Level AA standards, comply with global regulations like the European Accessibility Act, and ensure inclusive access to digital content within web applications.
WebViewer provides powerful in-browser editing tools that let users modify documents directly within a web application, without needing any external software or plugins.
WebViewer offers a full suite of PDF editing and annotation features, allowing users to:
- Edit PDF files in the browser and programmatically
- Add, move, or delete annotations (highlights, comments, shapes, signatures, etc.)
- Fill and create interactive form fields
- Redact sensitive content securely
- Apply digital signatures or flatten markup layers
In addition to PDF editing, WebViewer also supports Microsoft Word (DOCX) editing and spreadsheet editing (XLSX) through add-on modules.
With the WebViewer add-ons, users can open, edit, and save documents in the browser with rich text editing tools similar to desktop word processors.
Together, these capabilities make WebViewer a complete web-based document editing platform, enabling seamless review, collaboration, and content updates across both PDF, Word, and spreadsheet files in a customizable, modular and accessible UI.
WebViewer natively supports right-to-left languages (RTL) language content, making it easier to build applications that work seamlessly across global regions. In addition to full RTL content handling, WebViewer’s UI is now localized into Arabic, Hebrew, Persian, and Urdu.
Supported Integrations
Supported Browsers
Chrome
Firefox
Safari
Microsoft Edge
