Preview PDFs and Office Files on Any Device — No Software Needed

Imagine opening a PDF, Word, Excel, or PowerPoint directly in your browser —
no downloads, no desktop tools, and no waiting for software updates.

That’s exactly what OnlineDocumentViewer delivers.

Whether you’re on desktop, tablet, or mobile, you can upload a file and view it instantly with a clean, fast, browser-based interface.

Preview PDFs and Office Files

🚀 Zero-Install, Zero-Hassle

Traditional document handling requires:

  • Downloading files
  • Installing PDF readers or Office tools
  • Managing updates and licenses

With OnlineDocumentViewer, you skip all of that:

✔ Opens instantly in the browser
✔ Nothing to install
✔ No plugins required
✔ No compatibility issues

Just upload and preview.

📄 Multiple Formats, One Viewer

Supported formats include:

  • PDF
  • DOC / DOCX
  • XLS / XLSX
  • PPT / PPTX
  • Images (JPG, PNG, TIFF, etc.)
  • Emails (EML, MSG)
  • Even CAD and engineering drawings

A single interface — multiple document types.

🛡 Secure File Handling

Files are rendered server-side, so your device doesn’t execute any risky content.
This keeps users safe from:

  • Macro-based malware
  • Email attachment threats
  • Vulnerable plugins
  • Local file execution

Your document is visualized safely — as an image-based stream.

💼 Perfect for Business and Remote Teams

Online Document Viewer is ideal for:

  • Customer support reviewing attachments
  • Legal or financial teams previewing contracts
  • Remote workers needing quick access
  • Users without Microsoft Office installed
  • BYOD environments

No setup. No training. Universal access.

⚙️ Powered by Doconut .NET 6

Behind the scenes, Online Document Viewer runs on the Doconut .NET 6 rendering engine —
the same technology powering enterprise-grade document platforms.

This means:

  • Fast page rendering
  • High visual fidelity
  • Scalable server performance
  • Continuous updates
  • Enterprise reliability

What developers get in Doconut — end-users get online.

📱 Anywhere, Anytime

You can view files from:

  • Windows PCs
  • macOS
  • Linux (browser access)
  • iOS
  • Android

If you have a browser — you’re good to go.

👉 Try It Now

Upload a document and preview it instantly:

https://onlinedocumentviewer.com

No registration. No software. No headaches.

Just fast, secure, online document viewing.