NDO Converter
FileFlip converts NDO files into 14 other formats entirely inside your browser, using Assimp compiled to WebAssembly. The NDO file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert an NDO file?#
- Drop your NDO file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert NDO files online?#
Yes, because nothing is uploaded. FileFlip converts NDO files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a NDO file#
FileFlip converts NDO into 14 formats with Assimp, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | 3D Models |
|---|---|
| File extension | .ndo |
| FileFlip support | Read only, so it is a source rather than a target |
| Conversions available | 14 |
| Engines | Assimp |
| Downloaded to your browser | 11.2 MB on the first conversion, then cached |
What is an NDO file?#
An NDO file is Nendo's native mesh format, a binary file identified by a "nendo" header that stores an object's edge, face and vertex tables along with UV and texture data for Izware's subdivision modeller.
There's little reason to author new NDO files today; it matters only for opening a model saved by a copy of Nendo.
Convert NDO to OBJ or FBX to bring an old Nendo model into a modeller that's still maintained.
The NDO file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
NDO questions people ask#
What is an NDO file?
An NDO file is a Nendo model: an object's edges, faces, vertices and UV data stored in a binary file that starts with a "nendo" header. Nendo was a subdivision modeller from Izware known for a distinctive, box-free workflow built around edge and face selection.
Is Nendo still available to open NDO files?
No. Nendo's publisher, Izware, is no longer active, and there's no current source for the software, which means an NDO file today can only realistically be opened through a library like Assimp that includes a reverse-engineered NDO importer.
Is NDO related to Wings 3D?
Only by inspiration, not compatibility. Wings 3D, the open-source polygon modeller, describes itself as inspired by Nendo and Mirai, two earlier Izware applications, but Wings 3D does not read the NDO format itself.