Intelligent Slicing Engine
Advanced algorithms analyze your model and generate optimal toolpaths. Multi-threaded processing ensures fast slicing even for complex models with millions of polygons.
Transform your 3D models into flawless prints with industry-leading slicing technology. Trusted by makers, professionals, and hobbyists worldwide.
Prusa Slicer is more than just slicing software - it's a complete 3D printing workflow solution designed to help you achieve perfect prints every time. Born from the legendary Slic3r project and enhanced by Prusa Research, this powerful tool has become the go-to choice for anyone serious about 3D printing.
At its core, Prusa Slicer takes your 3D model files - whether they're STL, OBJ, AMF, or 3MF formats - and intelligently converts them into precise instructions that your 3D printer understands. But it goes far beyond basic slicing. This sophisticated software analyzes your model, optimizes the print path, calculates material usage, estimates print time, and generates G-code that's perfectly tuned for your specific printer and material combination.
What sets Prusa Slicer apart is its remarkable balance of power and usability. Beginners appreciate the intuitive interface and smart defaults that produce great results right out of the box. Advanced users love the granular control over every aspect of the printing process, from layer heights and infill patterns to support structures and multi-material printing strategies.
The software works seamlessly with both FDM (Fused Deposition Modeling) and SLA (Stereolithography) printers. Whether you're printing functional parts on a Prusa i3, creating intricate miniatures on a resin printer, or running a farm of various machines, Prusa Slicer adapts to your needs. It's compatible with virtually any RepRap-based printer, supporting popular firmware including Marlin, RepRap Firmware, Klipper, and many others.
One of the most powerful features is the real-time 3D preview that lets you inspect every layer of your print before committing filament to the build plate. You can visualize support structures, detect potential issues, and even see how different print settings affect the final result. This preview system has saved countless hours of failed prints and wasted material for users around the world.
Everything you need for professional 3D printing results
Advanced algorithms analyze your model and generate optimal toolpaths. Multi-threaded processing ensures fast slicing even for complex models with millions of polygons.
Automatically adjust layer height across your model. Use fine layers for detailed areas and thicker layers for simple sections, dramatically reducing print time without sacrificing quality.
Full control over multi-extruder printing with automatic wipe towers, purge volumes, and color transitions. Perfect for multi-color prints or combining different material properties.
Paint supports exactly where you need them. Remove automatic supports from critical surfaces and add manual supports to tricky overhangs for perfect results every time.
Choose from grid, honeycomb, gyroid, adaptive cubic, and many more infill patterns. Each optimized for different strength requirements and material savings.
Visualize every layer before printing. Inspect toolpaths, check for issues, and see exactly how your print will turn out. Available for both FDM and SLA prints.
Whether you're prototyping products, creating art, or manufacturing parts, Prusa Slicer gives you the tools to succeed.
Works flawlessly on Windows, macOS, and Linux. Same interface, same features, no compromises regardless of your operating system preference.
While optimized for Prusa printers, it works with hundreds of other brands. Pre-configured profiles for popular models or create custom profiles for any printer.
Regular updates bring new features, improvements, and bug fixes. Backed by Prusa Research and a thriving open-source community.
Comprehensive guides, video tutorials, and an active community forum ensure you're never stuck. Get help when you need it.
Automate your workflow with CLI support. Perfect for batch processing, farm management, or integration into larger manufacturing pipelines.
Download Prusa Slicer today and join millions of makers creating amazing things.
Download Now - It's FreeFrom model to finished print in four easy steps
Load STL, OBJ, AMF, or 3MF files with drag-and-drop simplicity. Automatic model repair fixes common issues before slicing.
Choose from preset profiles or fine-tune parameters. Adjust layer heights, infill, supports, and hundreds of other options.
Inspect the sliced model layer by layer. Check print time, material usage, and make adjustments before committing to print.
Generate G-code and transfer to your printer via SD card, USB, or direct connection. Watch your design come to life.
Join the global community of makers using Prusa Slicer to bring their ideas to life
Download Prusa Slicer - Free ForeverAvailable for Windows, macOS, and Linux • No registration required