Free online HGL to SVG converter

Plotter drawings saved as HGL may need conversion before they can be edited in a vector graphics program or embedded in a web page. SVG keeps the drawing scalable and can be opened by modern browsers and graphics editors.

What the HGL format is

HGL usually refers to HP Graphics Language (HP-GL), a vector plotting format developed for pen plotters. Its commands describe pen movement, drawing lines and curves, and pen selection. CAD and technical-drawing programs commonly produce HGL or related HP-GL/PLT files for plotting; older plotter files are a common reason for encountering the format.

What the SVG format is

SVG is an XML-based vector graphics format. Its paths and shapes can be scaled without pixelation, edited in vector graphics software, and displayed directly in web browsers. It is useful when a plotter drawing needs to be shared, edited, or used in a document or web page.

How to convert HGL to SVG

Online on 101convert.com

1. Upload the HGL file on the 101convert.com converter page. The page shows the per-file size limit.
2. Choose SVG as the output format and start the conversion. The conversion runs on the server with Inkscape; several files can be converted in one batch.
3. Download the converted SVG file or files.

Offline with desktop software

Inkscape is free and runs on Windows, macOS, and Linux. Open the HGL file with File → Open; if needed, select the HPGL/PLT file type in the file picker. Review any import options, then save the drawing with File → Save As and choose SVG.

CorelDRAW is a commercial option for Windows. Open the HP-GL file using File → Open, then use File → Export, choose SVG as the format, and save the result.

Quality and compatibility

HP-GL stores plotter instructions rather than a complete modern drawing document. Import settings and the commands supported by the software can affect page size, orientation, line weights, and pen colors. Check the resulting SVG’s dimensions and appearance before using it, especially if the original drawing depends on specific plotter pens or scale.