layers · time
G-code viewer
See exactly what your printer is going to do. Open a sliced G-code file — including Bambu Studio and OrcaSlicer .gcode.3mf — and step through it layer by layer in 3D, with walls, infill, supports and bridges in different colours. Check the print time, filament length and weight before you start a long print. Nothing is uploaded.
Private: your files never leave your device.
How to use G-code viewer
Step 1: Drop a .gcode file (or a Bambu/Orca .gcode.3mf).
Step 2: Drag the layer slider to watch the print build up; rotate and zoom the view.
Step 3: Check the print time, filament and weight.
Frequently asked questions
Which slicers are supported?
Any that write standard G-code: Cura, PrusaSlicer, SuperSlicer, OrcaSlicer, Bambu Studio, Simplify3D, Creality Print and others, for Marlin, Klipper and RepRap firmware.
Where does the print time come from?
From the slicer’s notes in the file when present. Otherwise Toola estimates it from the moves and speeds.
Can I open Prusa .bgcode?
Not yet — export plain G-code in PrusaSlicer (untick binary G-code) and open that.
Is my file uploaded?
No. It’s read and drawn in your browser.