OpenAnyFile
If double-clicking a OXPS file did nothing useful, that is normal: the format is fine, your operating system just has no default application registered for it. This page explains the format and gives you a way to read one immediately.
OpenXPS Document is an archive format developed by Microsoft / Ecma International, first appearing in 2009. It is normally produced by Windows 8+ XPS Document Writer.
The Ecma-standardised successor to XPS: a zip archive of XML page descriptions. Windows 7 wrote .xps happily but cannot open .oxps without a converter, which is the usual source of confusion.
| Full name | OpenXPS Document |
|---|---|
| File category | Archives |
| MIME type | application/oxps |
| Magic bytes (file signature) | 50 4B 03 04 (PK..) |
| Developer | Microsoft / Ecma International |
| Introduced | 2009 |
| Usually created by | Windows 8+ XPS Document Writer |
| OpenAnyFile engine | ZIP archive browser |
| Opens without upload | Yes — parsed locally in your browser |
OpenAnyFile routes .oxps to its ZIP archive browser, which opens a clickable folder tree — walk into directories and open any file inside without extracting, including archives nested in archives.
Viewing, inspecting and verifying. You get a clickable folder tree — walk into directories and open any file inside without extracting, including archives nested in archives. File details, exact byte size and the detected signature are always shown.
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
Plenty of sites promise they delete your uploads. OpenAnyFile avoids the promise by avoiding the upload. When you drop a .oxps file in, the browser grants the page temporary read access to those bytes and nothing more — the page has no path to send them anywhere. You can verify it in seconds: open DevTools, switch to the network tab, and open a file. The request list stays empty.
Yes. OpenAnyFile's ZIP archive browser runs in your browser, so you can read a OXPS file with nothing installed. You get a clickable folder tree — walk into directories and open any file inside without extracting, including archives nested in archives. For full editing you still need the original application — this is a viewer, not an editor.
Look at the first bytes rather than the extension. A genuine OXPS begins with 50 4B 03 04 (PK..). Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .oxps by mistake is easy to spot.
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
OpenXPS Document — an application/oxps format created by Microsoft / Ecma International since 2009. The Ecma-standardised successor to XPS: a zip archive of XML page descriptions. Windows 7 wrote .xps happily but cannot open .oxps without a converter, which is the usual source of confusion.
Yes — the same engine also opens .epub, .zip, .apk, so you can compare related files without switching tools.
These open with the same engine, so if you have one of these sitting next to your .oxps file, it will open too: