Document Viewer

View and preview multiple file formats online without downloading any software.

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13,236+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

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About This Tool

ViewerJS is a comprehensive online tool that allows you to view and preview various file formats directly in your browser. Upload PDF documents, Microsoft Office files (DOCX, XLSX, PPTX), image files (JPG, PNG, GIF, BMP), and text files to see their content instantly. The tool provides a clean, responsive interface with zoom controls, fullscreen mode (via platform toggle), and format-specific viewing options. All processing happens client-side for privacy and speed.

Save your calculation history with a free account

How to Use

Click the upload area or drag and drop a file (PDF, DOCX, XLSX, PPTX, JPG, PNG, GIF, BMP, or TXT).
Select the file format if auto-detection fails.
Click the 'View File' button to preview the content.
Use the zoom controls and navigation options in the viewer.
Download the original file if needed.

Frequently Asked Questions

Find Quick Answers

What file formats does ViewerJS support?

ViewerJS supports PDF, DOCX, XLSX, PPTX, JPG, PNG, GIF, BMP, and TXT files. More formats may be added in future updates.

Is my file uploaded to a server?

No, all file processing happens entirely in your browser (client-side). Your files never leave your device, ensuring complete privacy.

Can I view password-protected PDFs?

No, ViewerJS cannot handle password-protected or encrypted files due to browser security restrictions.

Does the tool work on mobile devices?

Yes, ViewerJS is fully responsive and works on smartphones, tablets, and desktop computers.

How do I zoom in or out in the viewer?

Use the zoom controls (+/- buttons) in the viewer toolbar, or use your browser's zoom functionality (Ctrl+/- or Cmd+/-).

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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