How to view a .GCODE file online
Three steps, no software to install.
Choose your file
Drag your .GCODE file onto the box above. If it comes with companion files like .mtl, .bin or textures, drop them together with it.
It opens right away
Your .GCODE file is opened and shown in 3D.
Inspect and measure
Rotate, switch views, toggle wireframe and check size, area and volume before printing.
What is a .GCODE file?
Meshes, scenes and what "watertight" means for 3D printing.
A .gcode file holds machine instructions (coordinates, speeds, temperatures, and tool commands) produced by slicer software for a 3D printer or CNC machine. Open it in Ultimaker Cura, PrusaSlicer, or OrcaSlicer to preview layers, or in any text editor to read the raw commands. The file is printer-specific: a file sliced for one machine may fail or cause damage on another.
Programs that open .GCODE files
| Full name | G-code File |
|---|---|
| Developer | ISO/EIA standard (RS-274D / ISO 6983-1); dialect extensions by Marlin, RepRap, Klipper, Fanuc, Haas, etc. |
| First released | 1960s (RS-274 standard); .gcode extension popularized by RepRap project ~2007 |
| Category | 3D & CAD |
| MIME type | text/x.gcode |
Related viewers
Other free tools for engineering and visual files.
Is my .GCODE file uploaded to your server?
No. Your .GCODE file is rendered with WebGL.
Why is my OBJ model grey or missing textures?
OBJ keeps materials in a separate .mtl file and textures as images. Select or drop all of them together with the .obj and the viewer will link them up automatically.
How accurate are the volume and weight?
For watertight meshes the volume is exact for the triangles in the file. The weight assumes PLA at 1.24 g/cm³ and 100% infill, so a sliced print with lower infill will weigh less.
My model looks lying on its side. What now?
CAD and 3D-printing files usually treat Z as "up", while games and glTF use Y. Switch Up: Y / Z in the toolbar.
Can I open STEP or IGES files here?
Those are CAD formats that store exact surfaces rather than triangles. Open them in our CAD Viewer, which converts them to a mesh.
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