Convert STL to PLY Online — Free
Upload a Stereolithography file and download it as Polygon File Format. Runs entirely in your browser — no server uploads.
About These Formats
Stereolithography
STL stores only triangulated geometry — no colors, textures, or animations. It is the de-facto standard for 3D printing slicers and CAD software.
Used with
3D printing slicers (Cura, PrusaSlicer, Bambu Studio), CAD tools, rapid prototyping workflows.
Polygon File Format
PLY is a flexible format for storing 3D polygon meshes. It supports vertex colors, custom properties, and is commonly used for 3D scan data and point clouds.
Used with
3D scanning, photogrammetry, research, point cloud processing (MeshLab, CloudCompare).
What Transfers from STL to PLY
A breakdown of which data survives the STL-to-PLY conversion.
3D Geometry
Vertices, faces, and normals always transfer
Textures & Materials
PLY is geometry-only — textures are discarded
Animations
STL does not store animations
Vertex Colors
STL does not support vertex colors
Multiple Objects
STL stores a single mesh
When to Convert STL to PLY
Convert STL to PLY when you need to work with point cloud data or use tools like MeshLab, CloudCompare, or Open3D. PLY is flexible and supports custom vertex attributes including per-vertex colors from scanned data.
STL to PLY — What to Know Before Converting
PLY stores raw triangulated geometry with no colour, material, or texture data. Save your original textures separately before converting if you need them for other pipelines.
Other STL Conversions
Tips for the Best STL to PLY Result
Binary PLY is significantly smaller than ASCII PLY — prefer binary output when storing or transferring files.
Verify your target tool reads the PLY property names you expect; some tools are strict about header ordering and property names.
Open3D, MeshLab, and CloudCompare all read PLY natively — it is the most compatible format for Python-based 3D processing pipelines.
To convert PLY vertex colors to UV-mapped textures for game or AR use, open the file in MeshLab and run "Transfer Vertex Color to Texture".
Common Reasons to Convert STL to PLY
- →3D scanning and photogrammetry: PLY is the standard output of LiDAR scanners, structured-light scanners, and photogrammetry pipelines
- →Research and academic work: PLY's flexible property support makes it ideal for datasets with per-point labels, normals, or curvature values
- →Python 3D pipelines: Open3D, trimesh, and pyntcloud all read and write PLY natively
- →Point cloud processing: MeshLab and CloudCompare use PLY as their primary interchange format
Frequently Asked Questions
How do I convert STL to PLY?
Upload your .stl file using the tool above, confirm the source format is set to STL and the target is PLY, then click Convert. The file processes in your browser and you can download it immediately.
Does converting STL to PLY preserve textures?
PLY stores geometry only. Textures and materials will not be included in the output.
Is this converter free?
Yes, completely free. No account, no usage limits, no hidden fees.
Are my files uploaded to a server?
No. All processing happens locally in your browser using WebGL. Your files never leave your device.