Edit Gaussian Splats in Your Browser: Free Online Splat Editor Guide
Tutorial · 2026-07-11 · 7 min read · by SplatMart Team
Floaters, messy bounds, a scene that needs cropping, every raw splat needs cleanup. SplatMart's free browser-based splat editor (built on the SuperSplat engine) handles it without installing anything. Here's a practical walkthrough: loading a .ply, deleting floaters, cropping, and exporting web-ready files.
Every raw gaussian splat needs cleanup. Training reconstructs everything the camera saw, including the sky behind your subject, the tripod shadow, and the smear of a passer-by, and leaves floaters drifting around the scene. The fix used to require a desktop install; now it's a browser tab. SplatMart's splat editor is free, runs at splatmart.com/editor, and is built on the SuperSplat engine, the open-source editor the 3DGS community already treats as the standard for this job.
What the editor does
- Open .ply splat files, from a Leighton generation, a phone app export, or anywhere else.
- Select splats with rectangle, brush, and sphere tools, then delete floaters and stray geometry.
- Crop the scene bounds so the download only contains what matters.
- Move, rotate, and scale the scene to set a sensible origin and orientation.
- Export web-ready files when you're done, see the file formats guide for which format to pick.
Loading your splat
Go to /editor and drag a .ply file in, everything runs client-side in the tab, so even large files are just limited by your machine's memory. If you generated the splat with Leighton, skip the download: every finished job has an Open in Editor button that loads the result directly.
The 10-minute cleanup pass
- Orbit the scene from outside and delete the obvious distant floaters first, big selection tools, coarse passes.
- Tighten the crop bounds to your subject. This alone removes most background junk and shrinks the file.
- Hunt close-range floaters: orbit at the height a viewer will actually see the scene from and delete the wisps that catch the light.
- Set the orientation, floor level, subject centred, so the scene opens the right way up in every viewer.
- Export, then sanity-check the file in a viewer before you ship it.
That pass is the difference between a capture and a product. Cleaned splats consistently outperform raw ones on the marketplace, buyers notice, and say 'cleaned' in your listing; it converts.
How it compares to other splat editors
The upstream SuperSplat editor is excellent and free at the PlayCanvas site, SplatMart's editor shares that engine, adds direct hand-off from generation and the marketplace, and stays free with no export caps. Splatware's editor is the other browser option; it adds colour grading but sits behind a freemium plan with daily export limits on the free tier, we compare the platforms honestly in SplatMart vs Splatware. Desktop tools like Postshot also edit splats but need an NVIDIA GPU and an install; see the best 3DGS software for the full landscape.
Frequently asked questions
How do I edit a gaussian splat file?
Open it in a splat editor, select the unwanted splats, delete, crop the bounds, and re-export. SplatMart's free browser editor (built on the SuperSplat engine) does all of this at splatmart.com/editor with nothing to install.
How do I remove floaters from a gaussian splat?
Orbit the scene and delete stray splats with selection tools, coarse passes from far away first, then a close pass at viewing height. Tightening the crop bounds also removes most background junk in one step.
Is there a free gaussian splat editor?
Yes, SplatMart's browser editor is free with no export limits, and the open-source SuperSplat editor it builds on is also free. You don't need to pay or subscribe for professional splat cleanup.
Can I edit splats without a powerful GPU?
For cleanup and cropping, yes, browser editors run on ordinary laptops; only very large scenes need more memory. It's training splats that needs serious GPU power, and cloud generators handle that part.
What file formats can I edit?
The editable working format is .ply. Compressed delivery formats (.splat, .spz, .sog) are for shipping, not editing, keep your .ply source, edit that, and re-export. See our splat file formats guide.
Got a messy splat sitting in your downloads? Open the editor and give it the 10-minute pass, then maybe list it when it's looking sharp.