# Office Viewer > Free online viewer for Office documents and text comparison tool. Preview Word, Excel, PowerPoint, PDF files and compare text differences without installing any software. Office Viewer provides a seamless way to view your important documents and compare text content directly in your browser. No downloads, no installations, and no account required. Your files stay private and secure with client-side processing. ## Core Features - [Word Viewer](https://officeviewer.org/doc-viewer): View Microsoft Word documents (.docx) online with formatting preserved - [Excel Viewer](https://officeviewer.org/excel-viewer): Browse Excel spreadsheets (.xlsx) without Microsoft Office - [PowerPoint Viewer](https://officeviewer.org/ppt-viewer): Display PowerPoint presentations (.pptx) in your browser - [PDF Viewer](https://officeviewer.org/pdf-viewer): View PDF documents online with fast rendering - [CSV Viewer](https://officeviewer.org/csv-viewer): View and analyze CSV files online with search and sorting capabilities - [Archive Viewer](https://officeviewer.org/archive-viewer): Browse and extract ZIP and RAR archive files online - [Text Compare](https://officeviewer.org/text-compare): Compare text differences with side-by-side diff view and highlighting ## Resources - [About Us](https://officeviewer.org/about): Learn about our mission and technology - [Changelog](https://officeviewer.org/changelog): Track our latest updates, new features, and improvements - [Privacy Policy](https://officeviewer.org/privacy): How we protect your data and privacy - [Terms of Service](https://officeviewer.org/terms): Guidelines for using our service ## Key Benefits - No software installation required - Works on all devices (desktop, tablet, mobile) - Free to use with no limitations - Client-side processing means your files never leave your device - No registration or sign-in required - Fast and responsive document rendering ## Contact - Email: support@officeviewer.org