Learn More About WebViewer, the JavaScript PDF Viewer Library

WebViewer is a JavaScript library for viewing, annotating, and editing PDFs, Office Documents, images, videos, and other formats inside all major browsers.

WebViewer's UI is open source and extremely customizable through a robust API, and can be customized even further by forking the repo.

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WebViewer Basics

Introduction to WebViewer An overview of how it works.

Open a document Load a document, load multiple documents, load WebViewer without a document.

Customize UI Hide buttons from the header, hide panels, remove print or download options.

Save and load annotations Save annotations to server, database or merge them onto a PDF. Import/export of annotations in XFDF.

Features

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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.

DOCX Viewing & 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.

Page Manipulation

Add, remove, rearrange, or merge pages easily by clicking or drag-and-drop page thumbnails, or set up a programmatic workflow.

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.

Document 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.

PDF/A

Convert PDF to PDF/A and validate PDF/A files to certain conformance levels.

Text and image extraction

Extract text, images, and other content from documents for further processing.

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Best practices Learn best practices when it comes to WebViewer.

WebViewer API Document viewing and basic PDF manipulation APIs.

Default UI A complete, responsive and fully customizable user interface

Deployment options Three main options for deploying WebViewer.

WebViewer Server WebViewer Server increases performance on older browsers including IE9, older mobile devices.

Server integration Optional approach to enhancing performance and provide support for more file formats.

Full API More advanced document processing APIs.

Deploy to production Only include what you need from the library when you are ready to deploy.