UVtools for PC: How to Download & Install on Windows

Introduction

If you print with resin and your prints keep failing for reasons you cannot see, UVtools is the free tool that shows you the problem before you waste a bottle of resin. It is a free open-source application for MSLA and DLP file analysis, calibration, repair, conversion and manipulation, and it supports more than 40 resin file formats. There is no payment, no account and no serial number, and the download from the official GitHub project is the complete program.

This guide explains what UVtools is, what it can and cannot do, what your PC needs to run it, and how to download and install it from the official website only. You will also get a first-use walkthrough that takes you from installation to a working result in a few minutes. By the end, you should be able to install UVtools on Windows and use it in a real project.

UVtools is best for resin printer owners, checking sliced files for islands and resin traps, and converting between resin file formats. Because it is free and legitimate, you do not need a cracked copy or an unknown download site. The official website provides the installer, and the free version is a real, permanent tool, not a short trial.

What Is UVtools?

UVtools is a free desktop application for working with sliced resin print files. In simple terms, it is a program where you open a sliced file from PrusaSlicer, Chitubox, Lychee or another slicer, and UVtools lets you view it layer by layer, find islands, resin traps, suction cups and overhangs, repair the layers, calibrate your exposure, and convert the file to your printer’s own format. You can also extract, add or remove layers, and change the settings the file was sliced with.

What makes UVtools useful is its coverage and its honesty. It supports over 40 proprietary and open file formats, it is licensed under the AGPLv3 licence, and it works with PrusaSlicer through its own printer profiles and a setup guide on the project wiki. The current version is 7.1.2, released on 26 October 2026. Two honest notes: UVtools is a file tool, not a slicer, so it cannot slice a model from scratch, and you still need a slicer such as PrusaSlicer to create the file first; and some of its experimental functions are untested on real printers, so use them with care on important prints.

Key Features

Layer-by-layer viewer: View any sliced file layer by layer, so you can see exactly what your printer will do.
Island and trap detection: Detect islands, resin traps, suction cups and overhangs before they ruin a print.
File repair: Repair layers, attach islands and fix common printing issues inside the file.
Format conversion: Convert between more than 40 resin file formats, so files work on different printers.
Calibration tools: Calibration tools help you dial in exposure and lift settings for your resin.
PrusaSlicer integration: Printer profiles and a setup guide connect UVtools with PrusaSlicer directly.
Portable option: A portable version runs with no installation needed, alongside the MSI installer.
Free and open source: UVtools is free and open source under the AGPLv3 licence, with no trial and no payment.

System Requirements

Operating System: Windows 10 or Windows 11, 64-bit
Processor: A modern dual-core processor or better
RAM: At least 4 GB of RAM for basic use, 8 GB or more recommended for large files
Storage: Around 500 MB of free disk space for the program and your projects
Graphics: A graphics card helps with previewing large files, but most of the work runs on the CPU
Other: A resin 3D printer and a slicer such as PrusaSlicer, a stable internet connection for the download, and a mouse for working in 3D

These are practical, modern Windows guidelines, not a word-for-word copy of an official specification table. The most important point is simple: UVtools is designed for normal Windows PCs, and a modest modern computer is enough to start.

How to Download UVtools (Official Method)

The only safe place to download UVtools is the official website. Do not download it from random file mirrors or “free download” portals, because those copies may be outdated or bundled with unwanted software. The official site is the source of truth for the current version.

Official download link: https://github.com/sn4k3/UVtools

On the official UVtools GitHub project, download the latest version from the releases page to your Downloads folder. There is an MSI installer for Windows, a portable version with no installation, and a Winget package. There is no payment involved at any point. If a site asks you to pay for UVtools, or offers a cracked version of it, leave that site and return to the official GitHub project.

Step-by-Step Installation

Follow these steps in order. Take your time with the install location and component choices, because those are the steps that most often cause problems later.

Download the installer from the official site — Open https://github.com/sn4k3/UVtools in your browser and download the latest MSI installer from the releases page.
Run the installer — Double-click the downloaded MSI file and follow the on-screen prompts on your Windows PC.
Install the .NET runtime if asked — If the installer asks for the .NET runtime, let it install it, because UVtools needs it to run.
Finish the installation — Wait for the installer to finish, then close it.
Launch UVtools — Double-click the UVtools shortcut to open the program and confirm it starts without an error.
Open a sliced file — Open a sliced resin file from PrusaSlicer or Chitubox and confirm the layers load.
Check the file for issues — Run the issue detection and confirm UVtools reports any islands or resin traps in the file.

Tip: UVtools is a file tool, not a slicer: slice your model in PrusaSlicer or Chitubox first, then open the file in UVtools to check and repair it. The portable version runs with no installation if you prefer not to install anything.

First-Use Walkthrough: Your First File Check with UVtools

This walkthrough is a simple first project. It is not a full course, but it will help you see UVtools working on a real project and learn its main tools.

Slice a model in PrusaSlicer — Slice a small model for your resin printer in PrusaSlicer and export the file.
Open the file in UVtools — Open UVtools and load the sliced file you just exported.
View the layers — Step through the layers one by one and watch how the model builds up.
Run the issue detection — Run the issue detection and look for islands, resin traps or suction cups in the report.
Repair a found issue — Use the repair tools to attach an island or fix a resin trap that UVtools found.
Check the exposure settings — Check the exposure and lift settings stored in the file against your resin’s recommended values.
Convert and save the file — Convert the file to your printer’s own format if needed, then save it ready for printing.

Is UVtools Free?

UVtools is free and open source. You download it from the official GitHub project, install it, and use it without paying and without a time limit. There is no paid version of UVtools itself. Be aware of two honest limits: it is a file tool, not a slicer, so you still need a slicer to create files first; and some experimental functions are untested on real printers, so use them with care on important prints.

That free status is important for this guide. All the steps here use the official download only, and they do not involve cracks, activators or licence keys. If you ever see a site offering a paid or cracked version of the free program, treat it as unsafe and return to the official site.

Frequently Asked Questions

Is UVtools safe to download?

Yes, when you download it from the official website only. The official installer is the version made by the developer. Avoid third-party sites that bundle extra software or ask for payment for a free program.

Does UVtools work on my Windows PC?

Yes, in most cases. UVtools runs on Windows 10 and 11 (64-bit), and the system requirements above cover a normal modern PC. Check the official site for the exact current version if your PC is older.

Is UVtools really free, or will it stop working?

The free version described in this guide is not a short trial. It stays usable after installation. There is no paid edition of UVtools itself.

Do I need a powerful PC to run UVtools?

No, not for basic use. A modern Windows 10 or 11 PC with 4 GB of RAM or more can run it for simple projects. Larger projects with many objects and effects will benefit from more RAM and a faster processor, but you can start and learn on a normal home PC.

Conclusion

UVtools is a useful, free addition to a Windows setup because it is a free open-source tool for analysing, repairing, calibrating and converting resin (MSLA/DLP) print files, and it can be downloaded safely from the official site. Start with a small first project, learn one tool at a time, and build from there.

To get started, download UVtools from the official website here: https://github.com/sn4k3/UVtools Install it with the steps above, test it once, and then use it in your next project. With a little practice, it can become a regular part of your workflow.