Installing a program to read one file is a bad trade, and most people make it several times a year. A web viewer removes the trade: the file opens in a tab you already have.
This is worth being precise about, because "view any file in your browser" is usually oversold. Doconut.app opens documents and images — 70+ extensions, from PDF and the Office formats through CAD drawings, PSD, email files and EPUB. It does not play video or audio, and it does not convert anything; it renders documents so you can read them.
The engine behind it is Doconut's .NET document viewing library, which is also sold separately for developers who need the same rendering inside their own application.
🌐 Easy Access
Open the page on a desktop, laptop, tablet or phone and the file renders the same way, because the rendering happens on the server rather than on your device. An old machine is not a disadvantage here, and a locked-down work laptop with no install rights is not a blocker either.
What still applies is the size ceiling, and it belongs to the format rather than to the site: 25 MB for a PDF or a PSD, 20 MB for a spreadsheet or a deck, 15 MB for a Word file, 10 MB for a CAD drawing, 5 MB for text, XML and HTML.
💾 Convenience
The convenience of viewing files directly in a web browser also removes the need to download and install various software programs for different file types. This not only saves time and effort but also helps conserve valuable storage space on devices. Users can quickly and easily access the files they need without any unnecessary complications, making their overall experience more fluid and user-friendly.
🔒 Security
Not downloading a file is genuinely safer than downloading one: nothing lands on your disk, and you have not installed a viewer of uncertain provenance to open it.
The honest trade-off is that the file goes somewhere else instead. On Doconut.app it travels over HTTPS, is rendered in a temporary session tied to your browser, and is deleted from our servers when that session ends — there is no account and nothing kept. We hold no ISO 27001, SOC 2 or HIPAA certification, so for documents under a compliance regime the right answer is software you host yourself, not any free hosted viewer.
The summary is short: you save the install, you save the disk space, and you do not keep a copy of a file you only needed to read once — because neither do we.
Start with the page for whatever is currently stuck: PDF, Word, Excel or CAD.