X3DB Converter
FileFlip converts X3DB files into 14 other formats entirely inside your browser, using Assimp compiled to WebAssembly. The X3DB 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 X3DB file?#
- Drop your X3DB 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 X3DB files online?#
Yes, because nothing is uploaded. FileFlip converts X3DB 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 X3DB file#
FileFlip converts X3DB 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 | .x3db |
| 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 X3DB file?#
An X3DB file holds the same X3D scene graph as the XML form, packed into ISO's compressed binary encoding for cases where parsing text is too slow or the file too large.
Use X3DB when an X3D scene is large enough that binary size and parse speed matter more than being able to read the file.
Convert X3DB to X3D XML when the scene needs to be inspected, edited or diffed.
The X3DB file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
X3DB questions people ask#
What is an X3DB file?
X3DB is X3D's compressed binary encoding, holding the same scene, geometry, materials, animation, as an .x3d XML file but packed into a binary stream that's smaller and faster to parse.
Can I edit an X3DB file directly?
Not as text. X3DB is a binary encoding, so editing it means converting to the XML .x3d form first, making the change there, and converting back if the binary form is still needed.
How is X3DB different from X3D?
X3DB and X3D describe the same scene graph, only the encoding differs: X3D is XML text under the .x3d extension, while X3DB is a compressed binary encoding of that same data under .x3db.