Provided by: freetype2-demos_2.13.3+dfsg-1build1_amd64 

NAME
ftsdf - an SDF viewer
SYNOPSIS
ftsdf pt font
DESCRIPTION
ftsdf displays Signed Distance Fields (SDF) for glyphs of the given font, allowing to change various
rendering and display options interactively.
pt The point size. Since currently the resolution is always set to 72dpi, this directly gives the
ppem value (pixels per EM), too.
font The font file to display.
FreeType 2.13.3 August 2024 FTSDF(1)