Convert PLN to glTF (Free)
Also converts STL, OBJ, GLB, PLY, USDZ, 3MF from the same file.
Runs in your browser. No upload, no signup, nothing to install.
Also from Innerscene: Circadian Lab, a free lighting calculator for room illuminance, melanopic EML, and glare.
How to convert PLN to glTF
- 1
Open your .pln file
Drag it onto the viewer above, or click "Open a PLN File". Files up to 200 MB open directly; the parse runs in a worker so the page stays responsive.
- 2
Pick glTF separate (.gltf + .bin) in the Export menu
Click Export in the toolbar, then glTF (.gltf).
- 3
Download
The .gltf is written in the browser and saved straight to your downloads folder. No queue, no email, no watermark.
What survives the conversion
A file conversion is a translation, and formats do not carry the same things. Here is exactly what moves from PLN into glTF, and what does not.
| Geometry | Kept | Both formats store triangle meshes, so the shape transfers directly. |
|---|---|---|
| Colors and materials | N/A | PLN files carry no color, so the glTF comes out in the viewer’s default material. You can color it in the destination application. |
| Layers and structure | Kept | Layers survive as real layers in the glTF file, so you can still isolate and toggle them. |
| Units and scale | Kept | glTF stores an explicit unit, so the model opens at true size without rescaling. |
What the glTF writer emits: The GLB export unpacked into its two parts: a JSON `.gltf` with `buffers[0]` pointing at an external `${base}.bin` (the source file’s own base name), zipped together.
The source: Graphisoft Archicad (.pln, .pla)
Supported Archicad building geometry: walls with door and window openings cut through them, slabs, pitched roofs, zones, beams, columns, morphs, meshes and terrain. PLN and PLA files from Archicad 25, 27 and 29 have been tested.
The target: glTF separate (.gltf + .bin) (.gltf)
The same glTF scene as the GLB export, as the loose JSON and binary files some pipelines expect instead of one packed file.
Opens in: Blender, Unity, Unreal Engine, model-viewer, any glTF-separate pipeline.
Your file never leaves your computer
Both the PLN parser and the glTF writer are JavaScript and WebAssembly running in your own browser tab. There is no upload step, no server-side conversion queue, and no copy of your file anywhere but your machine. That matters for drawings under NDA, for client work, and for anything you would not email to a stranger.
Free to Use, No Signup
There are no accounts and no watermarks on this converter. If it saved you time, the one thing we ask is a mention: a post, a link from your blog or course page, or a reply to someone asking how to open a file.
Share it
Made something reusable? Add it to the Free Parts Library. Writing about it? Copy a link, badge or citation. Send us your post and we’ll feature it with a link to your site.
Hear about new formats
Occasional emails when the viewer learns a new format or gets a new tool.
Frequently asked questions
▶Is this PLN to glTF converter free?
Yes. No signup, no watermark, no per-file limit and no paid tier. Innerscene.
▶Is my PLN file uploaded anywhere?
No. The file is read with the browser file API and converted in the same tab. Nothing is sent to a server unless you explicitly click Share, which is a separate, opt-in feature.
▶Will my colors and materials survive the glTF export?
PLN files carry no color, so the glTF comes out in the viewer’s default material. You can color it in the destination application.
▶Do layers and named parts carry into the glTF file?
Layers survive as real layers in the glTF file, so you can still isolate and toggle them.
▶Will the glTF open at the right size?
glTF stores an explicit unit, so the model opens at true size without rescaling.
▶How large a PLN file can I convert?
Up to 200 MB, and the ceiling adapts to how much memory your device reports. The conversion runs on your own hardware, so a desktop with plenty of RAM will handle more than a phone.
▶Can I convert glTF back to PLN?
Not here. We read PLN and write glTF, but not the reverse. the universal 3D viewer
▶Which browsers does it work in?
Chrome, Edge, Firefox and Safari, on Windows, macOS, Linux, iOS and Android. No plugin and no extension.
Convert PLN to something else
Convert something else to glTF
Or start from the universal 3D viewer.