PLT (also HPGL) is the standard language for printing line drawings created by Hewlett-Packard. HPGL is supported by many CAD programs, charting programs and word processors.

LEADTOOLS supports HPGL and HPGL/2.

It is possible to speed up the loading of large PLT files. For more information, refer to Using Filter Data to Speed up Loading Large Files.

This file format  requires a Document or Medical toolkit license and unlock key. 

The file constants associated with this file format are:

Constant Read Support Write Support Description
FILE_PLT Yes Yes [137] PLT.

When PLT files are rasterized, they are 4 BPP.

The following table indicates which objects LEAD can load and which objects it can save:

Object Load Save
Arc Supported Supported
Circle Supported Supported
Lines Supported Supported
Pie Supported Supported
PolyDraw Supported Not Supported
Polygons Supported Not Supported
Polyline Supported Not Supported
Rectangle Supported Supported
Text Supported Not Supported

NOTE: This format does not support LEAD's redirected IO feature, therefore it cannot be used with:

Required DLLs and Libraries

Related Formats


Win32, x64.

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