Universal access means users can preview documents from any browser, any device, without installing software.

Learn why modern SaaS platforms are replacing desktop viewers with secure, browser-based document viewing.

Modern .NET applications frequently need to display, preview, annotate, search, and convert documents directly inside a web interface, without relying on browser plugins, external apps, or unstable client-side solutions. Doconut offers a unified platform that solves this challenge with a server-side document viewer and conversion engine capable of handling 50+ document formats used across enterprise, educational, financial, and engineering environments. ...

Doconut is a complete document viewing solution for the .NET ecosystem. It enables ASP.NET MVC, .NET Core, Blazor, and WebForms developers to embed a fast, pixel-precise document viewer supporting: PDF Word (DOC/DOCX) Excel (XLS/XLSX) PowerPoint (PPT/PPTX) CAD (DWG/DXF) PSD, TIFF, and images Email formats (EML, MSG) E-books and text-based formats ...

Most online viewers struggle when handling files quickly, but DoconutApp was built from the ground up with one mission: process documents as fast as possible. Every part of its architecture focuses on minimizing waiting times, maximizing responsiveness, and ensuring that users see their documents immediately after upload. ...

When all you need is to quickly check a DOC or DOCX file, the last thing you want is to open heavy desktop software or install extra tools. DoconutApp eliminates that friction by offering a fast, free, browser-based way to preview Word documents instantly — no downloads, no extensions, and no accounts required. ...

Working with spreadsheets shouldn’t require installing heavy software or relying on device-specific programs. DoconutApp provides an instant, browser-based solution for opening XLS, XLSX, CSV and ODS files without downloading anything. ...

Many devices cannot natively open MPP or Visio diagrams, and installing heavy desktop software is not always possible or necessary. DoconutApp solves this by offering a free, browser-based viewer that instantly renders: ...

Why Use a Free Online Excel Viewer? DoconutApp is a free, browser-based Excel viewer designed for students, businesses, and professionals who need to open XLS or XLSX files quickly—without installing software. Whether you’re checking formulas, reviewing a financial sheet, or verifying a data export, DoconutApp loads spreadsheets in just seconds on any modern Windows device. No plug-ins, no extra steps — just upload your file and view it instantly. ...

Managing documents shouldn’t be complicated. In a world where professionals, students, and everyday users constantly juggle multiple file types, having a reliable online viewer is a necessity. Doconut.app takes the hassle out of document access by combining simplicity, speed, and strong security into a single, browser-based platform. ...