The Only File Viewer That Keeps Your Files 100% Private — No Upload Ever
Every major online file tool uploads your documents to a server. ViewAnyFile.app is different — it uses WebAssembly to process files in your browser. Here is how it works.
Quick Answer: ViewAnyFile.app is the only online file viewer that never uploads your files. All 400+ formats are processed locally using WebAssembly — nothing ever leaves your browser.
Every time you use Smallpdf, iLovePDF, Zamzar, GroupDocs, or CloudConvert, your file travels over the internet to a commercial server. ViewAnyFile.app is structurally different.
How ViewAnyFile Stays Private
- The WASM module (PDF.js, dicom-parser, IFC.js etc.) loads in your browser
- Your file is read from local disk into browser memory
- The WASM module parses and renders the file in your browser tab
- No network request is made — the file never leaves your machine
Formats Benefiting Most from Private Viewing
- DICOM medical images — CT scans contain patient PII
- DWG CAD drawings — Engineering IP and building designs
- IFC BIM models — Construction project data
- PSD design files — Unreleased creative work
- EML/MSG emails — Legal correspondence
Who uploads vs. who doesn't
| Tool | Where files go | Deleted after |
|---|---|---|
| ViewAnyFile.app | Never leaves your device | N/A |
| Smallpdf | Smallpdf servers | 1 hour |
| iLovePDF | iLovePDF servers | 2 hours |
| Zamzar | Zamzar servers | 24 hours |