UVtools is a free, open-source tool for resin (MSLA/DLP) 3D printing, developed by Tiago Conceição (sn4k3) under the AGPL-3.0 license. It opens files that a slicer has already produced, such as CTB, GOO, PRZ, SL1 and Photon Workshop formats, and lets you inspect and change them. Version 7.0.0 was released on September 19, 2026, adding a GPU-accelerated 3D layer preview and native Linux packages.
When to use UVtools
- A resin print failed and you want to find islands or other problems in the sliced file.
- You need to change settings in a sliced file, such as wait times or the bottom layer count, without slicing again.
- You want to convert a sliced file to another printer format, or run calibration tests.
When not to use it
- As your slicer. UVtools works on sliced files. You still need a slicer such as CHITUBOX Basic or Lychee Slicer.
- For filament printers. It is built for resin printer files.
Install
Download from github.com/sn4k3/UVtools/releases, or on Windows run winget install -e --id PTRTECH.UVtools. The README also lists Chocolatey and an install script for Linux and macOS. Compare the SHA-256 below with Get-FileHash, shasum -a 256 or sha256sum.
Requirements
The README lists Windows 10 or later, macOS 13 or later, or 64-bit Linux, with 8 GB of RAM or more plus 512 MB per CPU core and a 1920 x 1080 minimum resolution.
