PDF Viewer SDK

View, Annotate, and Redact PDFs with the Fastest PDF Viewer

Work with PDFs directly on the client without a server-side PDF library. The Pdftools Viewer SDK offers high performance, flexible integration, and comprehensive viewing and editing tools.

Use existing UI, customize, or go headless
Self-contained for offline deployment
Ready for web and mobile applications

25 years of experience delivering high-quality developer tooling for high-regulation industries

Choose the PDF Viewer SDK…

For fully offline deployment

The PDF Viewer SDK is entirely self-contained and can be deployed even in air-gapped environments—ideal when handling sensitive documents.

Lightning fast performance

With high-speed client-side rendering, the Pdftools Viewer SDK has the fastest time-to-first-page on the market and delivers highly-accurate results, color fidelity, and preserves complex layouts.

Varied customization options

Deploy the Viewer with the ready-made UI for quick deployment, customize as needed, or go fully headless and build a completely custom UI/UX.

True redaction that you can trust

Pdftools delivers true redaction by permanently eliminating residual data such as metadata, embedded objects, and hidden elements. The PDF is rebuilt without the redacted content, ensuring sensitive information is fully removed.

High-speed rendering for your documents

View PDFs

Upload, download, and print documents. Navigate pages, zoom and scroll, and configure fit and page layout mode.

Search PDFs

Full-text search with easy search results navigation. Select and copy text.

Edit and annotate PDFs

Add, edit, and delete annotations: stick notes, highlights, underline or strikeout. Add text, shapes, lines, stamps and images.

True redaction

Mark text for redaction. When exporting, redacted text is not exported and becomes truly redacted for ultimate security.

Customization

Build custom plugins for extended functionality, customize buttons and their behaviors, and listen to and dispatch events programmatically.

Separate npm packages for core functionalities and UI

The PDF Viewer from Pdftools is one of the few solutions with a proprietary rendering engine, delivering a fast, smooth user experience with high responsiveness through reduced loading times.

The PDF Viewer consists of two npm packages:

PDF Web SDK for core rendering and document manipulation capabilities
PDF Web Viewer for the customizable UI

Use as is, customize the UI, or go fully headless to build your own UI/UX. Further extend functionality with plugins.

See documentation

Lightning fast

PDF Viewer with the fastest time-to-first-page on the market

Smooth user experience

Highly responsive with reduced loading times

Highly customizable UI

Use out-of-the-box, customize UI, or go fully headless

Get started with the PDF Viewer

Install the packages from npm and start developing immediately. Test with full functionality for free and without time limits.

Install PDF Web SDK Install PDF Web Viewer

Solving PDF viewing and editing for governments and enterprises

Out-of-the box or thoroughly customized, our customers in banking, insurance, government and other high-regulation industries rely on our PDF Viewer for their day-to-day business processes.