Softwr

Manufacturing · head to head

Formlabs PreForm vs PrusaSlicer

Formlabs PreForm logo

Formlabs PreForm

Manufacturing

Free print preparation software that only drives Formlabs printers, because the money is in hardware and resin

From
Free
Rated
-
Full reviewWebsite
PrusaSlicer logo

PrusaSlicer

CAD

Feature-rich 3D printing slicer

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Formlabs PreForm preForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.; PrusaSlicer limited to slicing workflow only; no interactive 3D design capabilities
  • They diverge on capability: Formlabs PreForm covers Automatic orientation, PrusaSlicer covers Automatic supports.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Formlabs PreForm and PrusaSlicer actually diverge.

Attributes where Formlabs PreForm and PrusaSlicer differ
AttributeFormlabs PreFormPrusaSlicer
Pricing modelFree with a Formlabs printerfree
PlatformsWindows, macOSWindows, macOS, Linux
CategoryManufacturingCAD
FoundedUnknown2012

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Formlabs PreForm

  • Automatic orientation
  • Support generation
  • One-click print
  • Material presets
  • Dashboard
  • Fleet Control

Only in PrusaSlicer

  • Automatic supports
  • Multi-material
  • Variable layer height
  • Custom G-code
  • Paint-on supports
  • Ironing
  • Prusa printers
  • Most FDM printers

What people use each for

The jobs each tool is most often brought in to do.

Formlabs PreForm

  • A dental laboratory preparing surgical guides on a validated resin and printer combinationnot PrusaSlicer
  • A prototyping team running several Form printers that needs job queueing and usage trackingnot PrusaSlicer
  • A jewellery workshop laying out castable patterns to maximise parts per buildnot PrusaSlicer
  • An education lab that needs software with no per-student licence costnot PrusaSlicer

PrusaSlicer

  • Preparation of STL models for 3D printingnot Formlabs PreForm
  • Multi-material printing preparationnot Formlabs PreForm
  • G-code generation and customisation via macrosnot Formlabs PreForm

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Formlabs PreForm

  • PreForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.
  • Formlabs resin is sold in proprietary cartridges, and the ongoing consumable cost over a printer's life dwarfs anything a paid slicer would have charged.
  • Third-party resins can be used only through open material settings that step outside validated profiles, which affects print reliability and the comfort of warranty support.
  • Parameter-level control is deliberately limited compared with open slicers, so advanced users cannot tune exposure and layer behaviour the way they can on an open platform.
  • It is Windows and macOS only with no Linux build, which is awkward for research groups and labs standardised on Linux workstations.

PrusaSlicer

  • Limited to slicing workflow only; no interactive 3D design capabilities
  • Designed for RepRap-based printers; compatibility with other printer architectures varies

Pricing, plan by plan

Formlabs PreForm

Free
  • PreFormFree
    • Free download with no licence fee or subscription
    • No installation or seat limit
    • Works only with Formlabs printers

PrusaSlicer

Free

No published plan breakdown. See the PrusaSlicer review.

Which should you pick?

Choose Formlabs PreForm if

  • You need automatic orientation.
  • You want to start without paying.
  • You work on Windows, macOS.
  • You also want support generation.
Formlabs PreForm review

Choose PrusaSlicer if

  • You need automatic supports.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want multi-material.
PrusaSlicer review

Questions people ask

Is Formlabs PreForm or PrusaSlicer better?
Neither clearly leads. Formlabs PreForm starts at Free and PrusaSlicer at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formlabs PreForm or PrusaSlicer?
Formlabs PreForm starts at Free and PrusaSlicer at Free.
Does Formlabs PreForm or PrusaSlicer run on more platforms?
Formlabs PreForm runs on Windows, macOS. PrusaSlicer runs on Windows, macOS, Linux.
Can I use Formlabs PreForm for free?
Both have a free tier, so you can try either at no cost before committing.
What is Formlabs PreForm best used for?
Formlabs PreForm is most often used for a dental laboratory preparing surgical guides on a validated resin and printer combination, a prototyping team running several form printers that needs job queueing and usage tracking, a jewellery workshop laying out castable patterns to maximise parts per build, an education lab that needs software with no per-student licence cost. Of those, a dental laboratory preparing surgical guides on a validated resin and printer combination and a prototyping team running several form printers that needs job queueing and usage tracking are not what PrusaSlicer is typically brought in for.
What can Formlabs PreForm do that PrusaSlicer cannot?
Formlabs PreForm covers Automatic orientation, Support generation, One-click print, Material presets. PrusaSlicer covers Automatic supports, Multi-material, Variable layer height, Custom G-code.

Answered from the vendors’ own pages

Formlabs PreForm: Is PreForm free?

Yes, with no licence fee, subscription or installation limit. It is free because it only prepares jobs for Formlabs printers.

PrusaSlicer: How much does PrusaSlicer cost?

PrusaSlicer is completely free and open-source software developed by Prusa Research.

Source
Formlabs PreForm: Can PreForm drive a non-Formlabs printer?

No, and it never will. It is the front end for Formlabs hardware, which is where the revenue is.

Formlabs PreForm: Can I use third-party resin?

Only via open material settings, which take you outside validated profiles and the reliability those profiles are tuned for.

Formlabs PreForm: Does it run on Linux?

No. Builds are provided for Windows and macOS only.

Share

Related pages

More on Formlabs PreForm

More on PrusaSlicer

Keep looking

Other head to heads