What is a .GCO file?
A .gco file is G-code for a 3D printer or CNC machine. Produced by slicers like Cura and PrusaSlicer.
- Did you know
- The clipped .gco name exists because many 3D-printer firmwares read SD cards using DOS-style 8.3 filenames, leaving room for only three letters after the dot.
- The “G” in G-code marks a preparatory command, the family of moves and modes the controller prepares before acting.
- Alongside G-words, M-words handle miscellaneous functions such as turning a spindle, fan or coolant on and off.
- What Analyser reads
- Analyse G-code for 3D printers and CNC machines - detect the slicer or CAM tool, machine and controller, toolpath, and print or cut dimensions (Prusa, Bambu, Cura, Fusion 360, Mastercam, GRBL, Fanuc, Haas).
- Depth of analysis
- .GCO is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .GCO file
- Drag a .GCO file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.