MD5MESH to OBJ Converter
FileFlip converts MD5MESH to OBJ entirely inside your browser, using Assimp compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert an MD5MESH file to OBJ?#
- Drop your MD5MESH file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to OBJ and the conversion starts on its own. FileFlip downloads 11.2 MB of WebAssembly the first time and nothing after that, then runs Assimp on your own machine.
- Save the OBJ file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting MD5MESH to OBJ lose quality?#
Not in the sense of pixels or samples. Converting MD5MESH to OBJ rebuilds the file in OBJ's own model rather than re-encoding it, so everything OBJ can represent comes through exactly and anything it cannot has to be dropped. Expect the geometry to be exact, and anything the target has no place for, such as a rig, to be left behind.
Is it safe to convert MD5MESH files online?#
Yes, because nothing is uploaded. FileFlip converts MD5MESH 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 MD5MESH to OBJ actually does to the file#
Converting MD5MESH to OBJ runs on Assimp, downloads 11.2 MB of WebAssembly the first time and nothing after that, rebuilds the file in the target's own model, and drops skeleton and animation.
| Engine | Assimp |
|---|---|
| Conversion path | One step: MD5MESH → OBJ |
| Downloaded to your browser | 11.2 MB, once, then cached by your browser |
| Quality | Rebuilt in the target's model |
| You get back | One file, or a ZIP when the source carries separate materials or buffers |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| Materials | Sometimes | Survives for some files and not others. |
| Textures | Sometimes | Survives for some files and not others. |
| Skeleton and animation | Dropped | The target format has nowhere to put it. |
Worth knowing before you start:
- the result is a single file when the model has no external materials or buffers, and a ZIP when it does
- if the source carries a skeleton or animation, this target has no place to store it
What is an MD5MESH file?#
An MD5MESH file is a Doom 3 character or object's bind-pose skeleton and skinned geometry, written as plain text, with the actual motion supplied separately by a matching MD5ANIM file.
Use MD5MESH when authoring or modding content for Doom 3 or another id Tech 4 game that expects the format natively.
Convert MD5MESH to a modern interchange format when the model needs to move into current 3D software, since MD5's text syntax is specific to id Tech 4 tooling.
What is an OBJ file?#
An OBJ file is a plain-text 3D geometry format that Wavefront Technologies designed for its Advanced Visualizer software, storing vertex positions, texture coordinates and normals as human-readable lines of ASCII text.
Use OBJ when a static mesh needs to move between two different applications with the least risk of anything being misread.
Convert away from OBJ when the model needs animation, a skeleton, or to travel as a single file without a companion MTL.
MD5MESH to OBJ questions people ask#
What is an MD5MESH file?
An MD5MESH file holds a Doom 3 model's skeleton and skinned geometry as plain text, one of id Software's first formats to use real bone-based animation instead of the vertex snapshots earlier Quake models used. On its own it just holds a bind pose; a separate MD5ANIM file supplies the motion.
Why are Doom 3 models split into MD5MESH and MD5ANIM instead of one file?
Splitting the skeleton and skinned mesh (MD5MESH) from the keyframed motion (MD5ANIM) means one walk, run or death animation can drive every model that shares the same joint hierarchy, instead of every character needing its own copy of the same motion baked in.
Does MD5MESH have anything to do with the MD5 hash function?
No. MD5MESH just continues id Software's naming pattern from MD2 and MD3, using MD5 as the next number in that sequence for Doom 3's format. It shares nothing with the MD5 cryptographic hash beyond the name.
What is an OBJ file used for?
An OBJ file stores the geometry of a single 3D model: its vertices, faces, texture coordinates and normals, written as plain text. It's used to move a static mesh between applications, since almost every 3D tool on every platform can read it.