PrusaSlicer Download: Free Slicer from Prusa Research (Latest Version)

Download PrusaSlicer

How this download box works

• It is live. Each visit asks GitHub for the newest stable release of Prusa Research’s official PrusaSlicer project, so you are never sent to an outdated file. Your browser keeps the answer for ten minutes; the Refresh button asks again straight away.
• It shows the current version only. If one system has no file in the newest release, the box says so instead of quietly offering an older build.
• Test builds are flagged, not offered. Prusa publishes alpha, beta and release-candidate builds before each stable release, and PrusaSlicer 3.0 is currently in public alpha. They are marked as pre-releases, may be unstable and are left out of the download list; if a newer one exists, the box mentions it so you can try it if you want.
• There is no Linux file on GitHub. No GitHub release since 2.8.1 contains a Linux file. Prusa’s README says Linux builds are distributed exclusively through Flathub, so the Linux card in the box stays empty on purpose; see the install section for the Flathub steps.
• The macOS file is universal. Prusa’s page says the DMG works on both Intel and Apple Silicon Macs.
• Every link goes to GitHub. The script only accepts download addresses on the official project’s release path. If GitHub cannot be reached, the box falls back to links that always point to the newest release.

Download Safety and How to Verify the File

Slicers run with full access to your files, so where the installer comes from matters. Prusa’s README calls the PrusaSlicer page on prusa3d.com the recommended installation route, says that on Windows and macOS you can also download from the GitHub releases page, and says Linux is distributed through Flathub. Prusa’s own downloads page (linked above) offers the same Windows installer and macOS DMG. Be wary of mirror and “free download” sites: some show out-of-date version numbers or repackaged installers. GitHub shows a SHA-256 checksum for the files of 2.9.3 and newer, and the box shows it beside each file.

Check the SHA-256 checksum

A checksum is a fingerprint of the file. If the fingerprint of your download matches the one shown in the box above, the file is exactly what was published. Replace the file name with yours.

Windows (PowerShell)

Get-FileHash .\PrusaSlicer-*-setup.exe -Algorithm SHA256

macOS (Terminal)

shasum -a 256 ~/Downloads/PrusaSlicer-*.dmg

Compare the printed value, character by character, with the SHA-256 shown for that file. If they differ, delete the file and download it again from the official link.

What Is PrusaSlicer?

A slicer is the program between a 3D model and a printer. It cuts the model into thin layers, works out the path the nozzle should follow for each one and writes those instructions as G-code. PrusaSlicer does that for FDM printers and for mSLA resin printers. The README says it lets you take your 3D models, generate printing instructions and send them to your printer, and that apart from Prusa printers it supports machines from a wide variety of manufacturers.

History and licence

PrusaSlicer is originally based on Slic3r by Alessandro Ranellucci and the RepRap community. Prusa’s Knowledge Base says Prusa forked Slic3r, released “Slic3r Prusa Edition” in November 2016 and renamed it PrusaSlicer with the 2.0 release in May 2019. It is released under the GNU Affero General Public License v3: anyone may modify it, but changes must be published under the same licence. Prusa says it is funded by hardware and filament sales.

Many other slicers are built on PrusaSlicer. Prusa’s own list names OrcaSlicer, SuperSlicer, BambuStudio, Creality Print, Anycubic Slicer Next, QIDI Slicer, ElegooSlicer, Flash Studio Desktop and Snapmaker Orca. Features also travel in both directions: Prusa’s release notes credit scarf seams and some fuzzy-skin improvements to Orca Slicer, and say Arachne and Lightning infill were ported from Cura. Our guides to Orca Slicer, Bambu Studio and SuperSlicer cover three of these relatives.

Privacy and accounts

Prusa’s page says slicing happens on your own computer and that your models, profiles and G-code never leave it unless you explicitly send them somewhere. A Prusa Account is optional: it unlocks Prusa Connect and syncing, and since 2.8.0 the login button can be hidden in Preferences.

What’s New in Recent Releases

The table summarises the stable releases from 2.6.0 onward, newest first, from the official release notes. Prusa’s final release notes often point back to the alpha, beta and release-candidate notes, so the headline features below come from each version’s whole test cycle. The download box above shows the very newest release’s notes live, so it stays current even as this table ages.

Earlier, 2.5.0 (September 2022) introduced Arachne, Lightning infill, the pressure equalizer and STEP import.

PrusaSlicer 3.0 is in public alpha

Prusa published the first public alpha of PrusaSlicer 3.0 on 1 September 2026 and the second on 21 September 2026. Prusa’s own page and notes call it experimental and unstable, say it is not feature complete compared with 2.9.6 and do not recommend it for production. What the notes and Prusa’s announcement say about it:

• It runs next to 2.x. The alpha keeps its profiles in a separate PrusaSlicer3-dev folder, and Prusa says 2.x and 3.x can run side by side without conflicts. Its profile packages are separate from the 2.9 ones.
• New things: a completely new interface and architecture, multiple beds with separate configurations (even different printers) and no 9-bed limit, multiple projects in tabs, a new layered profile system, an experimental sandboxed Lua plugin system with built-in flow and temperature tower plugins, an offline mode, opt-in crash reporting and light and dark themes.
• Missing for now: SLA slicing, profiles for third-party printers (the alpha covers Prusa printers only), the standalone G-code viewer, post-processing scripts, the custom G-code editor and sequential arranging. Prusa says some of these will wait for 3.1.
• Projects need care. A 3.x project opened in 2.x loads geometry (and colour painting) only. Prusa’s Knowledge Base warns against re-saving such a project in 2.9, because that replaces its settings with whatever presets are selected.
• On Linux the alpha is available through the flathub-beta Flatpak remote. No date for a 3.0 beta or final release is stated.

Key Features

Which Printers Does PrusaSlicer Support?

Prusa’s page says PrusaSlicer works with any FDM or resin printer, and its Knowledge Base says other makers’ printers work, with many community profiles built in through the Configuration Wizard. The profile files of version 2.9.6 contain 34 vendor bundles and 264 printer models, counted from the project’s files: 35 Prusa FFF models, 2 Prusa SLA models and 227 models from other makers. Online updates add more.

There is no Bambu Lab bundle among the 34 vendors. For Bambu Lab printers, use Bambu Studio or Orca Slicer.

Printers that are not in the list

In the Configuration Wizard, choose Other FFF or Other SLA to tick a third-party vendor and its printers, or the Custom printer page to define your own profile. Prusa also publishes a set of template filaments (since 2.6.0) that work with any printer, as a starting point rather than a tuned profile. Advanced users can write a vendor bundle and drop it in the user vendor folder.

Sending Prints to the Printer

Who Should Use PrusaSlicer?

• Prusa printer owners, for whom it is the maker’s own, fully tested program, with Prusa Connect and PrusaLink built in.
• Beginners, who can start in Simple mode and move up to Advanced and Expert as they learn.
• Multi-material users, with MMU, tool-changer and ColorMix support, painting and a wipe tower.
• Resin printer owners, because it slices for mSLA printers as well as FDM.
• Anyone who wants a slicer with no account and no cloud, since slicing is local.

If you print on many brands and want built-in calibration tests, Orca Slicer is the more common choice. The comparison below explains the differences.

System Requirements

How to Install PrusaSlicer

Windows

1. Download the Windows installer (PrusaSlicer-<version>-setup.exe) from the box above, or from Prusa’s downloads page, and run it. Releases 2.9.3 and earlier had no installer; if you prefer no install, extract the .zip into a folder and run the program from there.
2. Prusa’s Knowledge Base documents silent installation for IT staff: run the installer with /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-, and uninstall with unins000.exe and the same first three flags.
3. The Knowledge Base does not describe how Windows SmartScreen treats the installer, so confirm the file came from an official link and matches its checksum before you continue.

macOS

1. Download the .dmg, open it and drag PrusaSlicer into the Applications folder. Prusa describes it as a 64-bit universal build.
2. If macOS blocks the first launch, open System Settings, Privacy & Security and click Open Anyway. This is Apple’s standard route for an app it has not verified; Prusa’s documentation does not describe it.

Linux

Prusa’s README says PrusaSlicer for Linux is distributed exclusively through Flathub, and the 2.9.0 notes explain why Prusa left AppImages: they cannot bundle everything (glibc, webkit), need older builds and are costly to maintain, while a Flatpak gives sandboxing, desktop integration and updates. Prusa’s product page still mentions an AppImage from GitHub, but no GitHub release since 2.8.1 has one.

1. Install Flatpak for your distribution and add the Flathub repository if you have not already:

   flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo

2. Install and run PrusaSlicer (add --user to install without administrator rights):

   flatpak install flathub com.prusa3d.PrusaSlicer
   flatpak run com.prusa3d.PrusaSlicer

3. The Flatpak can see your home folder and removable media by default; for other folders use the Flatseal tool to grant access. Flathub builds appear a couple of hours after the GitHub release.
4. For pre-releases such as the 3.0 alpha, add the beta repository and install from it, as Prusa’s Knowledge Base describes:

   flatpak install flathub-beta com.prusa3d.PrusaSlicer

First-Time Setup and Your First Print

The Configuration Wizard

The wizard opens on first launch (and any time from Configuration, Configuration Wizard). On macOS Prusa calls it the Configuration Assistant. Its pages are:

1. Welcome, with an option to remove all your user profiles.
2. Prusa Account login (optional), which downloads profiles automatically, or Configuration sources, where you enable Prusa’s online sources or load a local source file for a computer without internet.
3. Profiles: Prusa Research (FFF and SLA), Other FFF and Other SLA for third-party makers, and Custom printer.
4. Filaments or SLA materials; an asterisk marks items incompatible with an installed printer.
5. Other options: update notifications and automatic profile updates, the built-in Printables downloader, file associations, the view mode (Simple, Advanced or Expert) and metric or imperial units.

A snapshot of your presets is taken before each profile update, and Prusa says it never deletes user profiles. You can restore one from Configuration, Configuration Snapshots. The program only notifies you about new releases at startup; it does not install them. The configuration folder opens from Help, Show Configuration Folder; on Windows it is C:\Users\<name>\AppData\Roaming\PrusaSlicer and on macOS ~/Library/Application Support/PrusaSlicer. Alpha and beta builds use their own folders.

Slice and print a model

1. Add a model. Drag a file into the window or use File, Import. Supported formats are 3MF (preferred, and the project format), STL, STEP, OBJ and AMF. STEP files are triangulated on import, and a dialog sets the quality.
2. Choose your printer, filament and print settings in the right-hand panel. For a first print Prusa suggests 0.15 or 0.20 mm layers and an infill of around 15%, and turning on a brim if the part touches the bed with a small footprint.
3. Add supports if needed, choosing “Everywhere” or “Build plate only”, or paint enforcers and blockers.
4. Slice and check the preview before you export. Switching the preview to the speed view shows the real speeds, which are limited by acceleration and jerk.
5. Send it. Export the G-code, use the SD/USB button, or send it to a configured host such as Prusa Connect, PrusaLink or OctoPrint.

Settings Worth Knowing

Start with the profile Prusa supplies and change one setting at a time. The entries below are statements from Prusa’s Knowledge Base unless marked as general advice.

PrusaSlicer vs Orca Slicer, Bambu Studio and Cura

PrusaSlicer is the parent of the Orca and Bambu family, so the right choice depends on your printers more than on any single feature.

If you own a Prusa printer, PrusaSlicer is the natural choice. If you print on many brands or want calibration tools built in, Orca Slicer is the usual alternative; SuperSlicer is another PrusaSlicer fork with its own calibration menu. If you own a Bambu Lab printer, start with Bambu Studio.

Pros and Cons

Troubleshooting