OnlineDocumentViewer opens 70+ extensions in an ordinary browser tab — PDF, DOCX, XLSX, PPTX, DWG, PSD and the rest — with no plug-in, no download and no registration.
A free, browser-based, multi-format viewer
- No plug-ins, no downloads, no registration: drag, drop, read.
- Nothing is installed on your machine, and nothing is kept on ours — the upload is deleted after viewing.
Why This Matters
Most online viewers want an account, an extension, or a conversion step first. This one takes the file, renders it on the server, and shows it in a sandboxed frame in an ordinary tab.
What Makes It Quick
| Where the work happens | What you get |
|---|---|
| Upload without a page reload | The file goes to the server in the background |
| Rendering on the server | Your machine draws the result; an old laptop keeps up |
| Pages prepared on demand | The first page appears before the rest is processed |
Search runs over the text a document already carries. A scanned page holds pixels rather than characters, and there is no OCR here, so search finds nothing in it.
Real-World Use Cases
For Teams & Businesses
Open the file a colleague sent without asking for a re-export, on a machine with none of the software installed. Note what this is not: there is no shared link and no shared session — each person uploads the copy they already have.
For Students & Educators
Lecture slides, PDFs, spreadsheets and assignments open on any device, including a locked-down lab machine.
For Engineers & Architects
DWG, DXF and DGN up to 10 MB, with layers you can switch off one at a time, and no AutoCAD licence in sight.
For Designers
A PSD up to 25 MB opens as the composite Photoshop saved: layer order, masks, blend modes and adjustment layers already applied.
For Developers
Not this site — it is a page, not a component. The Doconut .NET SDK licenses the same renderer for use inside your own ASP.NET, MVC, .NET Core or Blazor application, where the document never leaves your servers.
Before You Upload
Size ceilings are per format: 25 MB for PDF, PSD, Visio, EPUB, TIFF and images; 20 MB for Excel, PowerPoint and Project; 15 MB for Word and RTF; 10 MB for CAD and email; 5 MB for HTML, XML and text. One file at a time, no account, and the upload is deleted after viewing.
Upload a file and it opens in seconds. That is the entire product.