HPGL File Extension

HP Graphics Language Plotter Format

File Type hpgl
Developer Hewlett-Packard
Popularity
4.2 (32 votes)
Application CIRCAD
Category Vector Image Files

What is a HPGL file?

HP Graphics Language Plotter Format, identified by the HPGL extension, is a Vector Image Files type and includes 120 files.

The HP Graphics Language Plotter Format (HPGL), created by HP, is one of file format they developed, and they also built 11 programs to support them.

HPGL file support extends to various operating systems, including Windows, Linux and Mac OS. When working with HPGL files, you can rely on 9 programs, including SwiftView, XnView and ViewCompanion Standard.

MIME types

: application/vnd.hp-HPGL

Windows

Mac OS

Linux

How to open a HPGL file?

If you can’t open a HPGL file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

When it comes to opening and working with HPGL files, SwiftView, XnView and ViewCompanion Standard are the top choices for users. To install the updated version of CIRCAD, simply go to the Holophase site and download the installer compatible with all major platforms.

Once the process is complete, CIRCAD should take over as the default application for HPGL files.

Setting CIRCAD as default HPGL viewer

Changing Default Programs in Windows

Right-click on your HPGL file, then choose the "Open with" option and select "Choose another application" from the available options;
Choose CIRCAD from the available applications listed in the pop-up window to set it as the default application to open your HPGL file;
Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

Change the default app for a file type in Mac

Initiate a right click or use Control + left click on the desired HPGL file to open a menu where you can select various actions;
Select "Open in application" and click "Other";
At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
Choose "All Programs" in this menu and search for CIRCAD. Check the box next to "Always open in app" to make it the default program.

Tips and tricks to solve problems with HPGL files

Rest assured, any issues with HPGL files can typically be addressed with simple software adjustments. See the tips below for help.

Why does CIRCAD stop responding or crash intermittently?

CIRCAD crashes can be caused by outdated software. Keep your Holophase products up to date by installing the latest updates.

Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.

What are the best practices for repairing a HPGL file that has gone bad?

Use a data recovery program to open the damaged HPGL file and from the menu choose "Repair" function to start the repair process. Allow the recovery process to complete, which will automatically repair the damaged vector image files.

What are the warning signs that my HPGL file may be corrupted?

Common indications of damaged HPGL vector image files are:

Error messages appear during the course of working with the file;
Editing the archive in CIRCAD results in slow or unresponsive behavior;
Opening the file results in an error or a failed attempt;
Unexpected expansion of the total size of the HPGL file;
Opening the file in CIRCAD or other programs causes them to hang or crash;

How to edit a HPGL file?

To edit HPGL files, it is essential to install software that supports not only viewing but also editing the vector image files. Online HPGL editors provide limited functionality compared to full-featured software for HP Graphics Language Plotter Format.

List of Top HPGL editors 2026

Based on the criteria above, here is a selection of HPGL editors you can use.

HPGL Editor Software	Developer	Platforms	Overall Rating
CIRCAD	Holophase	Windows	4.5 out of 5 (37 reviews)

Convert to and from HPGL

If obstacles arise while working with a HPGL file, you may convert it to formats like DXF, DWG, PTIF or other similar types for smoother handling.

Keep in mind that converting a HPGL file may introduce some limitations, but the original format can often be restored.

Offline software, including ViewCompanion Standard, allows smooth conversion of HPGL files while preserving original quality.