Free online HGL to PLT converter
Convert HGL plotter commands to PLT for plotters and software that require the PLT extension.
Convert HGL to PLT online - free
Your file is processed instantly and deleted as soon as you download it.
Import a file from a URL
Paste a direct link to the file. We download it to our server and it is converted exactly like an upload.
How it works
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Upload your .hgl file
Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .hgl to .plt conversion
After successful file upload, click to convert when you are ready.
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Download converted .plt file
Conversion result is ready to download.
How to convert hgl to plt file
- Graphics
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101convert.com assistant
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Some plotters and fabrication workflows accept files with a .plt extension but not an .hgl file. Converting the file can make its vector plot commands usable by software that expects PLT files.
What the HGL format is
In graphics, HGL denotes HP Graphics Language, a vector command format used to direct pen plotters. HGL files commonly contain HP-GL commands for drawing lines, selecting pens, and positioning the plotter head. CAD, technical illustration, and plotter-driver software can create them.
What the PLT format is
PLT is a common extension for plotter files, often containing HP-GL or HP-GL/2 commands. It is used to send vector drawings to plotters and to compatible CAD or cutting software. The extension does not define one universal command dialect, so the target device’s supported language matters.
How to convert HGL to PLT
Online on 101convert.com
- Upload the HGL file on the converter page. Multiple files can be added for batch conversion; the per-file size limit is shown on the page.
- Choose PLT as the output format and run the conversion. The conversion uses Inkscape.
- Download the converted PLT file.
Offline with desktop software
Inkscape is free and open-source and runs on Windows, macOS, and Linux. Where the installed build includes HPGL import and export support, open the HGL file with File → Open, then use File → Save a Copy and select the HPGL/plotter output format. Save it with a .plt extension if the format dialog permits; otherwise save the HPGL output and rename the file to .plt. Renaming changes only the filename, not the plot commands.
Quality and compatibility
HGL and PLT may both contain HP-GL commands, so conversion can preserve vector paths, but it may not preserve every device-specific command. Check the resulting drawing’s scale, orientation, pen assignments, and page limits in the target plotter software. If the file opens incorrectly or the output is empty, the installed converter may not support that HGL variant.
Note: This hgl to plt conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
Information about file extensions and file types is provided by File-Extensions.org
Frequently asked questions
Is the HGL to PLT converter free?
Yes, converting HGL to PLT on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my HGL file be?
You can upload HGL files up to 10 MB and convert up to 3 files at once in a single batch. With a paid plan the limit is up to 1000 MB per file and 50 files at once, see our plans.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert HGL to PLT?
No. The HGL to PLT conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid HGL file for this HGL to PLT conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.