A file arrives, your machine will not open it, and installing something to read it once is out of proportion. Doconut.app opens 70+ extensions in the browser, free and with no account, and deletes your file when you close the tab.

This post is the plain inventory: what it opens, what the limits are, and the three things it does not do.

Wide Format Support

PDF, DOC, XLS, PPT, PSD, DWG, SVG and the rest — Visio, Project, EML and MSG email, EPUB, TIFF, RTF, XML, HTML and plain text, across seventeen viewers.

Each has its own size ceiling, because a PDF and an XML file are not the same kind of object: 25 MB for PDF, PSD, Visio, TIFF, EPUB and images; 20 MB for Excel, PowerPoint and Project; 15 MB for Word and RTF; 10 MB for CAD and email; 5 MB for XML, HTML and text.

No Software Installation Required

Say goodbye to the hassle of software installations and account creation! With Doconut.app, users can access document viewing straight from their web browser without any prerequisites. This feature not only saves time but also enhances efficiency, allowing immediate access to your files. Just upload and view — it’s as simple as that.

User-Friendly Interface

The controls are the ones a reader needs: move between pages, jump to a page number, zoom, fit the page to the window, and print with Ctrl+P. Search works where the document carries a text layer.

There is no file management, because there are no files to manage — nothing is stored. The layout holds up on a laptop, tablet or phone, and since rendering happens on our servers, an old device is not a disadvantage.

Privacy Assurance

We do not store uploaded documents: the file is rendered in a temporary session tied to your browser and deleted when that session ends. The upload runs over HTTPS. There is no account, so there is nothing it could be filed under.

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 network, use software you host yourself.

Speed and Efficiency

The wait is mostly your upload: the file has to reach the server before anything can be drawn. After that it is the document's complexity rather than its page count — a PDF exported from Word opens faster than a scan of the same report, because one is text and the other is a stack of photographs.

The three things it does not do

It does not convert. For the file in another format, that is the sibling site OnlineDocumentViewer.com.
It does not edit, annotate or sign. The viewer draws a document; it never writes one.
It does not do OCR. Searching a scanned page finds nothing, because its words are pixels rather than characters. That is the file, not a bug.

Also worth knowing: one file at a time, with no batch upload and no ZIP handling.

Conclusion

One narrow job, done free and forgotten afterwards: show you what is inside a file you cannot otherwise open.

Start with the page for whatever is stuck — PDF, PowerPoint or PSD.