LanguagePLO
HP Graphics Language plotter document
File type: Vector graphic file
Files with plo extension can be found as vector plotter files in Hewlett-Packard Graphics Language. Used in plotter devices by HP.
What is plo file?
File type category:
Vector graphic file
Date updated: June 23, 2025
The plo file extension is mainly related to vector plotter files in HPGL.
HPGL, sometimes hyphenated as HP-GL, is the primary printer control language used by Hewlett-Packard plotters. The name is an initialism for Hewlett-Packard Graphics Language. It later became a standard for almost all plotters. Hewlett-Packard's printers also usually support HPGL in addition to PCL.
How to open plo file?
You can view these files in Xnview.
How to convert plo file?
Xnview is able to export *.plo files to other formats.
Suggested software to open plo file:
Associated software actions with the plo file
Programs for viewing plo files:
3D-Tool (Microsoft Windows)
XnView MP (Multiplatform)
Software apps that import plo files:
3D-Tool (Microsoft Windows)
Software apps that print plo files:
XnView MP (Multiplatform)