GIMP Script-fu

sg-save-path-as-poly
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Command:
Save path(s) as HTML poly map
Menu:
"<Image>/Filters->Web->Save path(s) as HTML poly map"
"<Vectors>/Save as HTML poly map"
PDB Name:
script-fu-sg-save-path-as-poly
Download:
sg-save-path-as-poly.scm (after the page appears, click on the "Download" command)
License:
GPLv2+

Description:

This script adds a command to the Filters->Web menu that will create a .map file from either an image's selection or its paths. This .map file can be read from within the Image Map filter to create polygonal HTML maps for use on web pages.