Convert

The Convert page is a browser-based tool for converting splats between formats, transforming them, and filtering them — no installation, no command line. It's the web frontend to the splat-transform CLI, so the same actions and formats are available, but with a friendlier drag-and-drop interface.

Convert runs entirely in the browser using WebAssembly. Your splats are never uploaded to a server; everything happens locally and downloads back to your machine when you're done.

When to use Convert vs the CLI

Use the Convert page when you want a single one-off conversion, want to experiment interactively, or don't have Node.js installed. Use the splat-transform CLI when you need to script conversions, batch many files, or integrate with a build pipeline.

Supported input formats

Drag a file (or files) onto the upload area, or pick from your filesystem.

• .ply — Standard PLY
• .sog — Bundled super-compressed format
• .ksplat — mkkellogg compressed format
• .splat — antimatter15 compressed format
• .spz — Niantic compressed format

You can add multiple files; they'll be merged into one output file (or used as multiple LODs if your output format supports it).

Supported output formats

Pick the output format from the dropdown. The default is Compressed PLY.

Format	Filename	Notes
Standard PLY	.ply	Largest; useful as a lossless interchange format.
Compressed PLY	.compressed.ply	Default. Quantized PLY — ~30% smaller than standard.
SuperSplat Optimized	.sog	Best compression for runtime use.
Spreadsheet	.csv	Per-Gaussian data dumped to CSV for spreadsheet/data analysis.
Embedded Viewer	.html	Self-contained .html containing the splat and the viewer — open it locally with a double-click.
Voxel Collision Bundle	.voxel.zip	Voxel collision data for making your scene walkable in Studio.

Actions

Each input file has its own action chain. Actions run top-to-bottom. You can also add a final action chain that runs on the merged output.

Transform actions

Action	Parameters	Default
Translate	x, y, z	0, 0, 0
Rotate	x, y, z degrees	0, 0, 0
Scale	factor	1 (min 0.001)

Filter actions

Action	Parameters	Default
Remove NaN / Inf	(none)	—
SH Bands	Max band: 0 (DC only), 1, 2, 3 (Full)	3
Bounding Box	minX, minY, minZ, maxX, maxY, maxZ	±10
Sphere	centerX, centerY, centerZ, radius	center 0, radius 10

Format-specific output options

A few output formats surface extra controls:

• SOG and HTML viewer — SH compression iterations (range 1–100, default 10). More iterations give cleaner spherical-harmonic compression at the cost of longer processing time.
• Voxel Collision Bundle — Voxel resolution (default 0.05 — smaller = finer surfaces but larger asset) and Opacity cutoff (0–1, default 0.1 — voxels with opacity above this are treated as solid).

Processing output

When you click Convert & Download:

1. Files process locally with progress reported in the page.
2. A processing log surfaces debug, info, warning, and error messages from the WebAssembly engine.
3. After conversion, a per-column statistics table appears (total Gaussians, min/max/mean per attribute).
4. The output file auto-downloads to your machine.

See also

• splat-transform CLI — same actions and formats, for the command line
• Direct Upload — once you have a finished splat, publish it without leaving the browser
• Studio / Collision — what to do with a .voxel.zip