Need to open a Word, ODT, Excel or PowerPoint file without the software that made it? Doconut.app renders it in your browser, free and with no account, and runs on the same .NET library that developers license for their own applications.
Try Doconut Online
Doconut is a .NET document processing library. Doconut.app is the free website that runs on it, so you can see the rendering without installing anything.
The two are not the same product, and the difference matters if you are evaluating: the website views files, one at a time, with no account. The library can also convert them, through a separately licensed Converter plugin. There is no conversion on the website at all.
✅ Instantly View Files Online – No need to download or install any programs.
✅ Supports Multiple File Formats – View DOCX, ODT, XLSX, PPTX, MSG, EML, and more.
✅ Accurate Rendering – Preserves formatting, including tables, images and styles.
✅ First Page First – You start reading while the rest of the document is still being prepared.
✅ Cross-Platform – Works in all modern browsers on Windows, macOS, Linux and mobile.
✅ Deleted After Viewing – Nothing is stored, and there is no account to store it against.
Supported File Formats in Doconut
Word Processing Formats
- DOC, DOCX – Microsoft Word documents
- ODT – OpenOffice and LibreOffice text documents
- RTF – Rich Text Format
Spreadsheet Formats
- XLS, XLSX – Microsoft Excel workbooks
- ODS – OpenDocument Spreadsheet files
Presentation Formats
- PPT, PPTX – Microsoft PowerPoint presentations
- ODP – OpenDocument Presentation files
Email Formats
- MSG, EML – Microsoft Outlook and other email file formats
Other File Types
- TIFF, CDR, PSD, SVG – Image and vector formats
How Doconut Transforms Document Viewing
Traditionally, opening a document meant installing whatever created it — a licence per format, per machine. Rendering server-side removes that: one viewer covers seventeen file families, and the reader's operating system stops being part of the problem.
With Doconut.app, users can upload and view documents in real-time without worrying about missing fonts, broken layouts, or distorted images.
Who Can Benefit from Doconut?
🏢 Businesses
- Open a file on a locked-down work machine where nothing can be installed.
- Handle the assortment of formats that arrive from outside the company.
- Read a document without first asking IT for the software that made it.
👨💻 Developers
- Integrate document viewing capabilities into .NET applications with Doconut’s powerful API.
- Eliminate third-party dependencies for document rendering.
- Customize document viewing settings to fit specific application needs.
🎓 Students & Educators
- Open and review academic documents, research papers, and presentations.
- View different file types on any device without software limitations.
📧 Legal & Financial Professionals
- Read contracts and reports without the authoring software, with the file deleted afterwards.
- Open email files with their full header trail, which is the part that matters when the question is who sent what and when.
The Evolution of Online Document Viewing
In the early days of digital documentation, viewing files required specific software for each format. Businesses faced challenges with compatibility, security, and performance when handling different document types.
With the rise of cloud-based solutions, online document viewers became essential for professionals who needed instant access to files without software limitations.
Doconut is a server-side document viewer that installs into .NET web applications. The browser receives rendered pages, so nothing is installed on the reader's machine and the output looks the same everywhere.
Test Doconut Online Today!
Upload a document at Doconut.app and read it. Free, no account, and the size limit depends on the format — 25 MB for a PDF, 20 MB for a spreadsheet or deck, 15 MB for a Word file, 10 MB for email.
Try it now! Doconut.app