Secure Document Viewer – Frequently Asked Questions (FAQ)

What is the Secure Document Viewer?

The Secure Document Viewer safely displays your documents by sanitizing them—removing active content and rendering them in a secure environment.

Which file types are supported?

The viewer supports PDF files and text-based documents (plain text and HTML). For other formats, please convert them to PDF or plain text first.

How does the sanitization process work?

For text/HTML files, the viewer sanitizes the content using DOMPurify before display. PDFs are rendered using PDF.js with pagination.

Is my document uploaded to a server?

No. All processing and sanitization occur locally in your browser.

How can I download the sanitized document?

A download link is provided for text/HTML documents after sanitization. For PDFs rendered via PDF.js, a download option is also available.

Can documents with active content be viewed safely?

Yes. The viewer sanitizes text/HTML files using DOMPurify and renders PDFs using PDF.js, ensuring that no active content is executed.

Do I need any special permissions?

No. All processing is done locally in your browser without requiring any special permissions.

Which browsers support the viewer?

The viewer works on all modern browsers that support FileReader and HTML5 features, including Chrome, Edge, Firefox, and Safari.

Is my document data transmitted anywhere?

No. All document processing is done locally on your device; your file is never uploaded.

Is the Secure Document Viewer free to use?

Yes, the Secure Document Viewer is completely free and web-based.