Orca Slicer Download Guide (Windows, Mac, Linux)

Download OrcaSlicer free from the official GitHub releases page. It is open source, runs on Windows, macOS, and Linux, and needs no account to slice locally. If you would rather not install it on every machine, you can run Orca Slicer in the cloud and slice from any browser.

Download OrcaSlicer

OrcaSlicer is distributed through GitHub. Open the releases page, expand the Assets list on the latest release, and download the build for your OS:

• Windows: the .exe installer or portable build for Windows 10 or 11 (64-bit)
• macOS: the .dmg for Apple Silicon (arm64) or Intel (x86_64)
• Linux: the AppImage or Flatpak build

GitHub is the only official source. "orcaslicer.com" style mirrors are not the project and can serve modified installers.

System requirements

• Windows 10 or later, 64-bit
• macOS 11.3 or later (Apple Silicon and Intel)
• Linux with a recent glibc, run as an AppImage or Flatpak
• A GPU with working OpenGL for the model preview

How to install

1. Download the right asset from the GitHub releases page.
2. Run the installer (Windows), drag the app to Applications (macOS), or mark the AppImage executable and launch it (Linux).
3. On first launch, select your printer from the built-in profile list, or import a custom machine profile.
4. Import your filament and process profiles, or start from Orca's tuned presets.

Skip the install: slice with Orca Slicer online

You do not have to install OrcaSlicer on every workstation. Printago runs the official OrcaSlicer binary as a headless cloud engine, so the same slicer is available online in the browser on any device. Past a single printer, that changes the workflow:

• One 3MF, every printer. Upload a project saved in OrcaSlicer and Printago retargets it across your whole fleet, resolving the machine profile per printer at slice time. Tree supports, painted seams, and modifiers are preserved.
• Color-aware re-slicing. When a job lands on a printer loaded with a different filament color, Printago re-slices with purge volumes sized for that transition.
• Bring all your profiles. Import your .orca_printer, .orca_filament, and .bbscfg bundles, inheritance intact.
• Pin your version. Choose which OrcaSlicer release your profiles inherit base values from, so a new release never silently changes your output.

See Orca Slicer in the cloud for how it feeds the print queue end to end.

Common download and install issues

• SmartScreen or antivirus flags the download: common with unsigned open-source builds. Confirm you used the official GitHub releases page, then allow it.
• macOS "OrcaSlicer is damaged": Gatekeeper on an unsigned build. Right-click and choose Open, or remove the quarantine attribute.
• Blank model preview: an OpenGL or driver issue. Update your GPU driver, or slice in the cloud where rendering is server-side.
• Settings reset after an update: Orca default values can change between releases. Pinning the slicer version in Printago keeps inherited values stable.

Related guides

• Where is vase mode in OrcaSlicer
• Export and import settings in OrcaSlicer
• Set up a filament profile in OrcaSlicer
• Orca Slicer vs Bambu Studio in Printago