SPLAT to PLY Converter Online
Convert SPLAT Gaussian Splatting files to PLY for full desktop tool and research pipeline compatibility.
Last updated Mar 2026
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What You Should Know
Why Convert SPLAT to PLY?
PLY is the universal format for 3DGS editing and research. If you have a scene in SPLAT format and need to load it into a desktop editing tool, research pipeline, or the official 3D Gaussian Splatting viewer, converting to PLY restores that compatibility. This is useful when you have received a SPLAT file but need to perform operations that require PLY input — such as fine-tuning Gaussian parameters, using the scene as a starting point for further training, or importing into a Blender 3DGS add-on.
What the PLY Output Contains
The output PLY file contains all Gaussian positions, covariance (scale and rotation), opacity, and base color from the SPLAT source. What it does not contain is spherical harmonics data — SPLAT files do not store SH, so the PLY output will have only DC coefficients (f_dc_0, f_dc_1, f_dc_2) with all f_rest_ coefficients set to zero. Any desktop tool that renders this PLY will show correct geometry and base colors, but will not display view-dependent color effects because the SH data is absent.
File Size Expansion and PLY Dual Identity
PLY is significantly larger than SPLAT. A 100 MB SPLAT file (approximately 3.1 million Gaussians) will expand to approximately 730 MB in PLY format (with full SH layout, even though SH values are zero). The PLY file size is determined by the number of Gaussians and the number of SH properties written, regardless of whether those properties contain meaningful data. Ensure you have adequate disk space before converting large SPLAT files. Important: the resulting PLY is a Gaussian Splatting PLY — it contains Gaussian parameters (f_dc_*, scale_*, rot_*), not mesh geometry. It will not load correctly as a mesh in standard PLY viewers. See /formats/ply-3dgs for more on the difference.
SPLAT vs PLY
| Feature | SPLAT | PLY |
|---|---|---|
| File Size | Medium — ~50% of equivalent PLY | Large — uncompressed (~236 bytes/Gaussian) |
| Spherical Harmonics | No — base color only (SH stripped) | Yes — full SH up to degree 3 |
| Web Compatibility | Broad — widely supported by web viewers | Limited — size makes direct delivery impractical |
| Compression | Moderate — fixed 32-byte layout | None — raw parameter storage |
| Progressive Loading | No | No |
| Typical Use | Web sharing, antimatter15 viewer, broad compatibility | Research, desktop editing, source of truth |