A file arrives that your machine will not open, and the usual fix is to install something. Doconut.app is the other fix: a free online viewer that opens 70+ extensions in the browser, with no account and nothing to install, and deletes your file when you close the tab.
It is a viewer rather than a document manager. It stores nothing, shares nothing and converts nothing — it shows you what is inside one file at a time.
Multi-Format Support: A One-Stop Solution
Seventeen viewers cover PDF, DOC, XLS, PPT, PSD, DWG, SVG and the rest — Visio, Project, EML and MSG email, EPUB, TIFF, RTF, XML, HTML and plain text among them.
The size ceiling belongs to the format rather than to the site, which is the thing most worth knowing before you rely on it:
| Limit | Formats |
|---|---|
| 25 MB | PDF, PSD, Visio, TIFF, EPUB, images |
| 20 MB | Excel, PowerPoint, Project |
| 15 MB | Word, RTF |
| 10 MB | CAD, email |
| 5 MB | XML, HTML, text |
Go over one and the message names the exact limit for what you tried.
User-Friendly Interface: Navigate with Ease
The controls are the ones a reader needs and no more: zoom, move between pages, jump to a page number, fit the page to the window, and print with Ctrl+P. Search works where the document carries a text layer — a PDF exported from Word does, a scanned page does not, because its words are pixels rather than characters. There is no OCR here.
Privacy and Security: Your Data is Safe
The upload runs over HTTPS, and your file is deleted from our servers when the viewing session ends. There is no account, so there is nothing it could be filed under and nothing to come back to later.
What we do not claim: no encrypted long-term storage, because there is no storage, and no ISO 27001, SOC 2 or HIPAA certification. For a document that must never leave your own network, use software you host yourself.
Access Anywhere: Cross-Device Compatibility
Whether you’re on a smartphone, tablet, laptop, or desktop, Doconut.app guarantees a consistent viewing experience across all devices. The platform automatically adjusts to different screen sizes and resolutions, allowing you to access your documents whenever and wherever you need them, without the hassle of software installation.
Nothing to update
Because the viewer is a website, there is no version to install and no update to apply. Whatever is on the page is the current one. Improvements to the rendering engine — new formats accepted, a format that used to fail now working — arrive without you doing anything.
Conclusion: Experience the Future of Document Management
The job is narrow: read a file you cannot otherwise open, then close the tab and have it gone.
Start with the page for whatever is stuck — PDF, Word, Excel or CAD. If you need the file in a different format rather than just readable, that is the sibling site OnlineDocumentViewer.com.