Prusa EasyPrint: what it does and when to use it

EasyPrint is a cloud-based slicer from Prusa Research. It runs in a web browser and is built into the Prusa mobile apps. Nothing to install.

It isn’t a new slicer written from scratch. It’s a web front end that builds a 3MF project file, and the actual slicing happens on the servers using the same open source PrusaSlicer you can download yourself. Your phone never does the heavy lifting.

It started as an invite-only beta in February 2025, opened to everyone that May, and the core tool is still free. There’s now an optional paid tier for heavier use.

Two ways in: printables.com/slice in any browser, or the Prusa mobile app. Either way you’ll need a Prusa Account. To send jobs remotely, your printer needs to be connected through Prusa Connect so EasyPrint can detect it and pull the right profile.

1. Browse Printables. Compatible models show an EasyPrint button next to Download.
2. Clicking it adds the model to your Print list, which works like a shopping cart. Add as many as you want. You can also upload your own STL or 3MF files.
3. Continue to the slicing screen. Everything gets arranged automatically on a virtual bed, and spills onto extra beds if it won’t fit.
4. EasyPrint applies a matching profile for your printer. Balanced is the middle-of-the-road pick, and it’s the one I use most.
5. Pick your material, adjust settings, hit print.

Projects save to your Prusa Account automatically, so you can start on your phone and finish on your desktop. No internet on your printer? Add it as an “offline printer,” slice normally, then move the file over with a USB stick or SD card.

Basic editing. Move, rotate, scale, and place-on-face to drop a model flat onto its most stable surface. Cloning lays out however many copies you ask for.

Batch printing. Large projects spread across multiple beds that slice into separate files. Sequential printing runs one object start to finish before the next, which cuts stringing and limits the damage when a part comes loose.

Geometry. The cut tool splits an object along a plane, and unlike the desktop version it keeps painted colors and texturing intact. It can’t add alignment dowels, though. Negative volumes let you punch holes without leaving the browser.

Color. This is where it’s come the furthest. Smart painting expands a color outward from where you click until it hits a sharp angle. ColorMix, added in May 2026, alternates thin layers of loaded filaments to produce shades you don’t actually own. Single-color printers get a manual color-change pause, which works fine for lettering, though it takes forever.

Fuzzy skin. Paint texture onto specific vertical walls. Good for grip on tool handles. It distorts dimensions, so keep it off anything that has to fit.

Third-party printers work too, offline or over LAN with Prusa’s browser extension installed on a desktop browser.

The big limit is 60 seconds of slicing per bed. Prusa says that covers about 95% of projects. Go over and you’ll need to download the project and slice locally, or move to a paid tier. You also get one job at a time.

In the event you are loading a large polycount model, just simplify it.

Custom filament profiles aren’t supported, so a profile you’ve tuned for a specific spool won’t come along. There are no modifier meshes, paint-on supports, variable layer height, or seam control. Cloud storage is 1GB per account, shared with Prusa Connect, and only files you upload yourself count against it.

These aren’t competing tools. They’re for different moments.

Reach for EasyPrint when you found something on Printables and the defaults are fine, you’re on a phone or Chromebook, you’re helping someone print without teaching them a slicer, or you want to try ColorMix without installing anything.

Reach for desktop PrusaSlicer when you need tuned filament profiles, modifier meshes, paint-on supports, variable layer height, seam control, or alignment dowels at a cut. Same goes for anything complex enough to blow past 60 seconds, and for print farm work where consistency beats convenience.

There’s also a hybrid that works well: set the model up in EasyPrint, download the project, and open that same 3MF in desktop PrusaSlicer. Positioning, printer selection, and settings all carry over, so you’re not starting from scratch.