The same tools, pointed at a folder
Every single-file tool on this site does one job to one model. This page runs any one of them across as many models as you give it and returns a single zip, with the per-file result listed as it goes — what came out, what was skipped because the format did not match, and what failed and why.
It is the same code path. A batch run is not a different algorithm with different results; it is the tool page in a loop. If a model reduces well on the single-file page, it reduces identically here.
One file at a time, on purpose
Models get processed strictly in sequence. Running them in parallel would be faster on paper and would hold every parsed scene in memory at once — and these are files with hundreds of thousands of triangles each. A parallel run over a real folder dies partway through with nothing to show for it; a sequential one finishes.
Each result goes straight into the zip and the model behind it is released before the next one is read. That is why there is no file limit: memory does not grow with the size of your folder, only time does.
Why this page asks for an account when nothing else does
Every other tool here works with no sign-in, nothing uploaded, and no account — and that is not changing. This is the exception, stated up front rather than after the work is done, because being asked for an email after watching fifty models process would be a trick.
The account is free, there is no file limit attached to it, and there is no paid tier for batch. Your models still never leave your machine: the processing runs in your tab exactly as it does on the single-file pages. The account is for the account.
How to use it
- Sign in or create a free account — batch is the one page here that needs one.
- Pick the operation: reduce polygons, compress, quad remesh, repair, FBX→GLB, OBJ→GLB, GLB→STL or pixel art.
- Drop in as many models as you like. Files the chosen tool cannot read are listed as skipped rather than silently dropped.
- Set the options once — they apply to every file in the run.
- Watch the per-file list, then download one zip with everything that came out.
Questions
How many files can I process at once?
There is no limit. Files are handled one at a time and released as they finish, so a folder of five hundred costs time rather than memory. You can stop a run after the current file if you change your mind.
Do I have to pay for batch?
No. It needs a free account and nothing more — there is no Pro tier attached to batch and no file cap. Pro covers the editor: bake-all, 128 frames per direction, 1024 px cells and ten emitters.
Are my models uploaded when I sign in?
No. The account exists on our server; your models do not. Every operation runs in your browser tab on this page exactly as it does on the single-file pages — signing in does not change where the work happens.
What happens if one file fails?
The run continues and that file is marked failed with the reason. A batch that aborts on file seven of fifty is worse than useless, so nothing stops the queue except you.
Can I mix formats in one run?
Yes, as long as the chosen tool reads them. Most tools read GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX and VRM; the two dedicated converters take only their own input format, and anything else in the folder is listed as skipped.
The other tools
- Reduce polygons — Cut the triangle count of a GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX or VRM — or a zipped model folder — and keep the textures. Runs in your browser, no file size limit, nothing uploaded.
- Quad remesh — Rebuild any mesh as clean quads with real edge flow — QuadriFlow, the engine behind Blender’s quad remesh, running in your browser. Reads GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX and VRM, with no file size limit.
- Compress GLB — Resize and re-encode the textures, and cut the triangle count if the mesh is the problem. Drop a GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX or VRM — or a zipped model folder — and get a compressed GLB back. In your browser, no file size limit.
- FBX to GLB — Convert an FBX — Mixamo, Blender, an AI generator — into a GLB, with the centimetre scale fixed on the way through. Any size, in your browser, nothing uploaded.
- Check a 3D model for problems — The Model doctor: find what is wrong with a model before it wastes your afternoon — wrong scale, broken bind pose, inverted normals, overlapping UVs, holes. Reads GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX and VRM, any size, in your browser.
- Repair a 3D model — Weld split vertices, drop degenerate faces and stray islands, fill holes, flip inverted normals. GLB, GLTF, FBX, OBJ, DAE, STL, PLY, VOX or VRM — any size, in your browser, nothing uploaded.
- Pixel art from 3D — Drop an animated model, get a pixel-art spritesheet. The palette, the dither and the direction set are already chosen — fine-tuning lives in the editor.
- GLB to STL — Convert a 3D model to a printable STL — scaled to real millimetres, turned Z-up, and told plainly whether it is watertight. GLB, GLTF, FBX, OBJ, DAE, PLY, VOX or VRM in, any size, in your browser.
- OBJ to GLB — Convert an .obj into a GLB that engines and browsers read. Geometry and UVs travel; OBJ has nothing else to carry. Any size, in your browser, nothing uploaded.
- Everything else Rig Bake does — rigging, retargeting, spritesheets, VFX.