The question people ask most often about Doconut.app is how big a file it takes, and the answer is not one number. The ceiling belongs to the format, because a CAD drawing and an XML file are not the same kind of object and do not cost the same to render.
Here is the full table, and what it means when your file is refused.
Multi-Format Support
Seventy-plus extensions across seventeen viewers, and the limit for each:
| Limit | Viewer | Formats |
|---|---|---|
| 25 MB | ||
| 25 MB | PSD | .psd |
| 25 MB | Visio | .vsd, .vsdx, .vss, .vst and the stencil variants |
| 25 MB | TIFF | .tiff, .tif |
| 25 MB | eBook | .epub |
| 25 MB | Images | .jpg, .png, .gif, .bmp, .webp, .avif |
| 25 MB | Vector & raw images | .svg, .eps, .dng, .cdr, .tga, .ico, .jp2 |
| 20 MB | Excel | .xls, .xlsx, .csv, .ods, .xlsm, .xlsb |
| 20 MB | PowerPoint | .ppt, .pptx, .odp and the slideshow and template variants |
| 20 MB | Project | .mpp, .mpx |
| 15 MB | Word | .doc, .docx, .odt, .rtf and the template variants |
| 10 MB | CAD | .dwg, .dxf, .dgn |
| 10 MB | .eml, .msg, .emlx | |
| 5 MB | XML, HTML, Text | .xml, .html, .htm, .mhtml, .txt, .xps |
CAD is the one that catches people out. 10 MB is not much for an issued drawing, and PURGE in AutoCAD — or saving out the single sheet you need — is usually what gets a file under it.
Privacy and Security
The upload runs over HTTPS, and your file is deleted from our servers when the viewing session ends. There is no account, so nothing is filed under your name and nothing can be retrieved 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. There is also no sharing feature — each person opens their own copy.
User-Friendly Experience
Navigating Doconut.app is a breeze, thanks to its intuitive interface. Users can upload files easily via drag-and-drop or by simply selecting them from their devices. The viewer includes convenient features such as pagination, zooming, and smooth navigation between document sections, creating a smooth workflow that enhances productivity.
Cross-Device Compatibility
Doconut.app is designed to be accessible from multiple devices, including smartphones, tablets, and desktop computers. This cross-device compatibility ensures that your important documents are always within reach, allowing you to view them anytime and anywhere, without being tied to a specific device.
No Installation Required
One of the standout features of Doconut.app is that it is entirely browser-based. This means users can access the document viewer immediately without any software installations or downloads. You can just open a browser, navigate to Doconut.app, and start viewing your documents instantly — hassle-free!
What happens when a file is too big
The uploader checks the extension and the size before it sends anything, so an oversized file is refused at the door rather than failing halfway through — and the message names the exact limit for the format you tried.
Getting under it depends on the format. Images are almost always the reason a Word file or a deck is oversized, so compressing pictures in the original application is normally enough. A PDF that is too large is usually a scan, which compresses well. A CAD drawing needs purging rather than compressing.
Free to Use
Last but not least, Doconut.app is completely free! There are no hidden fees or subscription charges, making it an accessible solution for anyone looking for a reliable document viewer.
Conclusion
One last thing the table does not show: this is a viewer. It does not convert files, edit them or store them, and it takes one at a time. If you need the file in a different format rather than just readable, that is the sibling site OnlineDocumentViewer.com.
Otherwise, go to the page for your format — PDF, Word, Excel, CAD — and drop the file in.