Privacy Policy

Last Updated: October 25, 2025

This Privacy Policy explains how pdf-render.js ("the Library") handles the processing and privacy of your data when viewing PDF documents.

1. The Library's Core Commitment to Privacy

pdf-render.js is a client-side JavaScript library. This means that its primary function—the loading, decoding, and rendering of PDF documents—happens entirely within the end-user's web browser environment.

• No Data Transmission: The Library does not collect, transmit, or store any document data, content, or metadata to our servers or any third-party servers.
• Local Processing: Your PDF files remain locally in your browser's memory while viewing.

2. Data Processed Locally

The Library processes the following types of data locally in the browser to provide viewing functionality:

• Document Content: The text, images, and structure of the PDF are processed to render the pages on a canvas element.
• Viewer State: Temporary data such as the current page number, zoom level, and rotation state is stored in browser memory only for the duration of the viewing session.
• Annotations: If the Library's annotation features are used, the data (coordinates, text) is stored in the browser's temporary memory for immediate display but is not transmitted externally by the Library.

3. Third-Party Dependencies (pdf.js)

pdf-render.js is built upon the Mozilla pdf.js library. The use of pdf.js adheres to the same principle of client-side processing, ensuring your documents are not sent to any external server by this dependency.

We use content delivery networks (CDNs) to load necessary script files (like the pdf.js core script). This connection is standard for almost all websites and involves no personal document data being transferred to the CDN provider.

4. Disclaimer Regarding Host Websites

This Privacy Policy applies only to the pdf-render.js Library itself. It does not cover the website on which the Library is embedded ("Host Website").

• Host Website Practices: The Host Website may employ its own tracking technologies, cookies, analytics, or server-side logging that are entirely separate from the Library.
• User Responsibility: You should review the Host Website's own privacy policy to understand its data collection practices.

5. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes.