diff --git a/Makefile b/Makefile
index 8a9dd3b..6cda09c 100644
--- a/Makefile
+++ b/Makefile
@@ -4,8 +4,9 @@ BDFS += ctrld-fixed-13r.bdf ctrld-fixed-13b.bdf ctrld-fixed-13r-i.bdf ctrld-fixe
 BDFS += ctrld-fixed-10r.bdf ctrld-fixed-10b.bdf
 
 PCFS := ${BDFS:.bdf=.pcf}
+OTBS := ${BDFS:.bdf=.otb}
 
-all: fonts.dir fonts.scale ${PCFS}
+all: fonts.dir fonts.scale ${PCFS} ${OTBS}
 	xset fp default
 	xset +fp `pwd`
 	xset fp rehash
@@ -17,12 +18,15 @@ fonts.scale: ${PCFS}
 	mkfontscale
 
 clean:
-	rm -rf *.bak *-2x.bdf *.pcf fonts.dir fonts.scale
+	rm -rf *.bak *-2x.bdf *.pcf *.otb fonts.dir fonts.scale
 
 2x:
 	for i in ${BDFS}; do bdfresize -f 2 "$$i" > $$(basename $$i .bdf)-2x.bdf; done
 
-.SUFFIXES: .bdf .pcf
+.SUFFIXES: .bdf .pcf .otb
 
 .bdf.pcf:
 	bdftopcf -o $@ $<
+
+.bdf.otb:
+	fonttosfnt -v -c -b -g 2 -m 1 -o $@ $<
diff --git a/ctrld-fixed-10b.otb b/ctrld-fixed-10b.otb
new file mode 100644
index 0000000..455819f
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diff --git a/ctrld-fixed-10r.otb b/ctrld-fixed-10r.otb
new file mode 100644
index 0000000..4426b8c
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diff --git a/ctrld-fixed-13b-i.otb b/ctrld-fixed-13b-i.otb
new file mode 100644
index 0000000..b3817e7
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diff --git a/ctrld-fixed-13b.otb b/ctrld-fixed-13b.otb
new file mode 100644
index 0000000..0dfd8a9
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diff --git a/ctrld-fixed-13r-i.otb b/ctrld-fixed-13r-i.otb
new file mode 100644
index 0000000..358329d
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diff --git a/ctrld-fixed-13r.otb b/ctrld-fixed-13r.otb
new file mode 100644
index 0000000..f641d2d
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diff --git a/ctrld-fixed-16b-i.otb b/ctrld-fixed-16b-i.otb
new file mode 100644
index 0000000..de627f4
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diff --git a/ctrld-fixed-16b.otb b/ctrld-fixed-16b.otb
new file mode 100644
index 0000000..dd477c3
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diff --git a/ctrld-fixed-16r-i.otb b/ctrld-fixed-16r-i.otb
new file mode 100644
index 0000000..afc4da2
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diff --git a/ctrld-fixed-16r.otb b/ctrld-fixed-16r.otb
new file mode 100644
index 0000000..9f4077d
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