diff --git a/doc.mk b/doc.mk
index 169fab5..0dd4a65 100644
--- a/doc.mk
+++ b/doc.mk
@@ -20,6 +20,8 @@ ODF2PDF?=     soffice --convert-to pdf
 ODF2PDFFLAGS?=--headless
 INKSCAPE?=      inkscape
 INKSCAPEFLAGS?= -D -z --export-latex
+PDFCROP?=       pdfcrop
+PDFCROPFLAGS?=
 DIA?=           dia
 DIAFLAGS?=
 XCF2PNGFLAGS?=  -flatten
@@ -75,6 +77,7 @@ todo:
 
 %.pdf: %.svg
 	${INKSCAPE} ${INKSCAPEFLAGS} --file=$< --export-pdf=$@
+	${PDFCROP} $@
 %.ps: %.svg
 	${INKSCAPE} ${INKSCAPEFLAGS} --file=$< --export-ps=$@
 
diff --git a/doc.mk.nw b/doc.mk.nw
index 08169f0..614a9c6 100644
--- a/doc.mk.nw
+++ b/doc.mk.nw
@@ -213,10 +213,13 @@ Unlike previously, we will only allow flags for [[inkscape]] to be set.
 <<variables>>=
 INKSCAPE?=      inkscape
 INKSCAPEFLAGS?= -D -z --export-latex
+PDFCROP?=       pdfcrop
+PDFCROPFLAGS?=
 @
 <<SVG to PDF>>=
 %.pdf: %.svg
 	${INKSCAPE} ${INKSCAPEFLAGS} --file=$< --export-pdf=$@
+	${PDFCROP} $@
 @ We can thus create similar rules for the formats PS and EPS, instead of PDF.
 <<SVG to PS>>=
 %.ps: %.svg