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PHO GTL
File conversion

Convert PHO to GTL

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Is it possible to convert PHO to GTL?
Yes - PHO converts to GTL.

.gtl is the Gerber Top Layer (top copper) convention. Like .gbp, .gtl content is standard Gerber data - just rename the appropriate .pho file for the top copper layer to .gtl, or re-export from the original EDA tool.

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Last verified Oct 2026

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How to convert PHO to GTL

Converting a .PHO file to .GTL lets you open the content in software that prefers the .GTL format, though some details may change compared with the original. The programs listed below open .PHO files and can save or export them to .GTL (or a closely related format). One of them is Altium Designer: Altium Designer is a comprehensive electronic design automation (EDA) software developed by Altium Limited for PCB layout, schematic capture, and signal….

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

Programs that convert PHO

Altium Designer

About these formats

.PHO Gerber Photoplot File

A PHO file is a Gerber photoplot file containing PCB layer data in RS-274X format, produced mainly by PADS PCB Layout software. Open it with a free Gerber viewer such as ViewMate, Gerbv, or…

Open .PHO details →
.GTL Gerber Top Layer

A .GTL file is associated with Gerber Top Layer, a 3d image file.

Open .GTL details →