Opening a GCO File

The GCO file type is primarily associated with Ultimaker Cura.

GCO	File extension: GCO
	File type:	instruction file

What is a GCO file

GCO files mostly belong to Ultimaker Cura. GCO Files are mainly used as G-code instructions for 3D printers.
These files contain command lines that direct a printer's movements and operations. They specify how the printer head moves, when to start or stop extrusion, and how fast it should work.
Usage Details:

They are generated by slicing software such as Ultimaker Cura and Simplify3D.

The commands follow standard G-code syntax, which is common in 3D printing environments.

On occasion, a GCO file may contain other data. For example, one variant stores genealogy information in a ZIP format, and another provides instructions for cutting plotters as used by Silhouette Studio (Silhouette Studio).

Functionality:
FilExt.com tip: When loaded into a 3D printer, the file’s commands are read and executed to build an object layer by layer. You can open a GCO file in a text editor to view the readable instructions, although using the original slicing software is advised for editing or troubleshooting.

How can I open a GCO file?

You need a suitable software like Ultimaker Cura to open a GCO file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your GCO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a GCO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online GCO Text Viewer

Choose your .gco file to view

or drag and drop it here

Online File Viewer

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How to extract texts from GCO files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

You can extract texts from GCO file or capture a preview screenshot using our online GCO file viewer:

To do this, click the button "Choose your .gco file to view" on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

Programs that open and convert GCO files:

Ultimaker Cura
See the previous paragraphs to learn more about the main application. GCO files are often referred to as Ultimaker Cura data files because this type of file is primarily created or used by this software.
Genbox Family History (Chart Options) by Thoughtful Creations
Genbox Family History offers you tools for your genealogy project. Family tree charts, genealogy research reports, search, media, full source citations, and more. The identifying characters used for this association are - Hex: 47 42 4F 58 43 4F 50 54, ASCII: GBOXCOPT.

GCO file format details:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. The file format can be deduced from the file extension and the signature. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our evaluation of the GCO files is as follows:

GCO is not that commonly used as a file extension. This file type includes different formats for different programs. The two most popular formats are as follows:

30% of all GCO files have the same signature M1. These files are text files, so they contain words and text. A typical file size is 780 KB. The file type is very old but is also used today. The following keywords are characteristic: G92 E0, G1 E-2 F2400 and G1 E2 F2400. Examples of file names are Cube.gco or 1_Nose_tip.gco. Such files are related to spoolholder and nose.
30% of all GCO files start with the bytes G2 crucial for this file format. These files are plain text, which means they can be viewed with any text editor such as Windows Editor, Nano for Linux, and TextEdit for macOS. Most of these files are 350 KB to 12 MB in size. The following keywords are characteristic: G92 E0, G1 Z15 F100 and Z0.3 F9000. The file name A20Tcolored.gco is typical for these files. These files can be linked to colored.

All other GCO files (40%) have no uniform format, the following 5 formats can be found: ZIP and FLAVOR. These files are often connected to mest. Just click the "Choose your .gco file to view" button on this page to find out what your GCO file is.

Technical Data for GCO File Extension

File classification:

Data

Identifier:

Hex: 47 42 4F 58 43 4F 50 54, ASCII: GBOXCOPT (provided by TrID database)

Related files:

gcode, ngc, nc, x3g, tap, stl, obj, zip, gdt, gro, sds

a gco instruction file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with GCO files

Associate the GCO file extension with the correct application.
Update your software that should actually open instruction files. Because only the current version supports the latest GCO file format. Search, therefore, e.g. on the manufacturer website after an available Ultimaker Cura update.
To make sure that your GCO file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .GCO file online - secure, fast, and no downloads needed.