About MeshSlice

MeshSlice is a powerful, user-friendly, and private 3D model slicer developed by Oriol Estapé. The primary goal is to provide a fast and secure tool for preparing your 3D models for printing, with a strong focus on privacy.

What is a Slicer?

A slicer is an essential component of the 3D printing workflow. It takes a digital 3D model (such as an .STL or .OBJ file) and divides it into a series of thin, horizontal layers. It then generates a G-code file, which contains all the instructions a 3D printer needs to construct the object, including commands for movement and temperature.

How MeshSlice Works

In-Browser Processing: Unlike many other services, MeshSlice processes all your files locally, directly within your web browser. This ensures that your 3D models never leave your machine.
Privacy: Because we do not upload or save your files, you can be confident that your designs and intellectual property remain completely private. You can find more details in our Privacy Policy.

Technology & Acknowledgements

MeshSlice is built using valuable open-source technologies that enable its functionality. We are grateful to the developers of these projects for their contributions:

three.js: A robust JavaScript 3D library used for visualization.

Source code: https://github.com/mrdoob/three.js

License:

          The MIT License

          Copyright © 2010-2025 three.js authors

          Permission is hereby granted, free of charge, to any person obtaining a copy
          of this software and associated documentation files (the "Software"), to deal
          in the Software without restriction, including without limitation the rights
          to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
          copies of the Software, and to permit persons to whom the Software is
          furnished to do so, subject to the following conditions:

          The above copyright notice and this permission notice shall be included in
          all copies or substantial portions of the Software.

          THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
          IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
          FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
          AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
          LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
          OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
          THE SOFTWARE.

clipper-lib: A library for performing complex geometric calculations and slicing operations.

Source code: https://github.com/junmer/clipper-lib

License:

          Boost Software License - Version 1.0 - August 17th, 2003

          Permission is hereby granted, free of charge, to any person or organization
          obtaining a copy of the software and accompanying documentation covered by
          this license (the "Software") to use, reproduce, display, distribute,
          execute, and transmit the Software, and to prepare derivative works of the
          Software, and to permit third-parties to whom the Software is furnished to
          do so, all subject to the following:

          The copyright notices in the Software and this entire statement, including
          the above license grant, this restriction and the following disclaimer,
          must be included in all copies of the Software, in whole or in part, and
          all derivative works of the Software, unless such copies or derivative
          works are solely in the form of machine-executable object code generated by
          a source language processor.

          THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
          IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
          FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
          SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
          FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
          ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
          DEALINGS IN THE SOFTWARE.

UltiMaker Cura: MeshSlice uses printer parameters based on Cura’s open-source profiles (not algorithms or code).

Source code: https://github.com/Ultimaker/Cura

Version used: https://github.com/meshslice-com/Cura

License:

                GNU LESSER GENERAL PUBLIC LICENSE
                                  Version 3, 29 June 2007

            Copyright (C) 2007 Free Software Foundation, Inc. 
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