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HP Graphics Language plotter file
File type: Vector graphic file
Files with hp1 extension are used by the HPGL printer control language.
File type category:
Vector graphic file
Date updated: June 23, 2025
The hp1 file extension is related to HPGL, sometimes hyphenated as HP-GL, 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.
Use XnView MP to open the hp1 extension files.
Files with hp1 extension haven't known conversion.
Programs for viewing hp1 files:
Multiplatform
Language
