diff --git a/.gitignore b/.gitignore
index 4a79983..559b62a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.bak
 charsets/*.ucm
-charsets/Blocks.txt
\ No newline at end of file
+charsets/Blocks.txt
+build/*
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 47e1d61..f81dbe0 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,32 @@ check-coverage-mono :
 psf : build/consolefonts/Uni2-Salut16.psf
 psf : build/consolefonts/Uni2-Salut16b.psf
 
-build/consolefonts/Uni2-Salut%.psf : mono/salut-mono%.bdf
+build/consolefonts/Uni2-Salut16.psf : build/consolefonts/Uni2-Salut%.psf : mono/salut-mono%.bdf
 	mkdir -p $(@D)
 	bdf2psf $< /usr/share/bdf2psf/standard.equivalents /usr/share/bdf2psf/fontsets/Uni2.512 512 $@
-	
\ No newline at end of file
+
+.PHONY : opentype opentype-mono opentype-sans
+
+opentype : opentype-sans opentype-mono
+
+opentype-sans : $(patsubst sans/%.bdf,build/opentype/%.otb,$(wildcard sans/*.bdf))
+
+build/opentype/salut-sans%.otb : sans/salut-sans%.bdf
+	mkdir -p $(@D)
+	fonttosfnt -o $@ -m 2 -- $^
+
+opentype-mono : $(patsubst mono/%.bdf,build/opentype/%.otb,$(wildcard mono/*.bdf))
+
+build/opentype/salut-mono%.otb : mono/salut-mono%.bdf
+	mkdir -p $(@D)
+	fonttosfnt -o $@ -- $^
+
+.PHONY : pcf pcf-mono
+
+pcf : pcf-mono
+
+pcf-mono : $(patsubst mono/%.bdf,build/pcf/%.pcf,$(wildcard mono/*.bdf))
+
+build/pcf/salut-mono%.pcf : mono/salut-mono%.bdf
+	mkdir -p $(@D)
+	bdftopcf -o $@ $^
diff --git a/README.md b/README.md
index 40b4234..ea6b9d1 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,14 @@ However, some rendering libraries do not support BDF
 (notable case is Pango 1.44 dropped support for FreeType in favor of HarfBuzz),
 so you might not see bitmap fonts in some applications.
 
+There's a method to build OTB (open-type bitmap) font from BDF with `fonttosfnt`.
+The `opentype` target converts all fonts to OTB.
+
+Also conversion to PCF is possible make target `pcf` does this thing to all
+fonts by calling `bdftopsf` utility.
+
+Original inctruction: https://fedoraproject.org/wiki/BitmapFontConversion
+
 16x8 font can be installed in Linux console.
 First, convert BDF to PSF (bdf2psf utility needed for this).
 `make psf` command will do conversion for you.