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>> GTL file

GTL file format description

Many people share .gtl files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .gtl file can be edited, converted or printed with. On this page, we try to provide assistance for handling .gtl files.

1 filename extension(s) found in our database.

.gtl - Gerber Top Layer Data

GTL file is a Gerber Top Layer Data. A Gerber File is a standard file format used by printed circuit board (PCB) fabrication houses that contains information necessary for computer controlled machines to draw exact patterns for circuit boards.

.gtl file format description:
GTL format
Data files
- / -
Gerber Top Layer Data related links:
Gerber Top Layer Data related extensions:
Gerber Aperture Data
Gerber Inner Routing Layer 1 Data
Gerber Bottom Layer Data
Gerber Bottom Overlay Data
Gerber Bottom Paste Mask Data
Gerber Bottom Solder Mask Data

Naturally, other applications may also use the .gtl file extension. Even harmful programs can create .gtl files. Be especially cautious with .gtl files coming from an unknown source!

Can't open a .gtl file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .gtl file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

tl, btl, rtl, htl, gto, gtk, gt, glt, ggl, ttl, ftl, tgl, ntl, gtp, gtm

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Family Tree Legends Document
D2NT Library
Gerber Top Overlay Data
IBM WebSphere sMash Groovy Template
Velocity Template Language File
FreeMarker Template

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If you have useful information about the .gtl file format, then write to us!