diff --git a/Makefile b/Makefile
index 56e6f8f..ba37f12 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,10 @@ PROG = ustreamer
 all: $(SOURCES) $(PROG)
 
 
+regen:
+	tools/make-jpg-h.py src/data/blank.jpg src/data/blank.h BLANK 640 480
+
+
 $(PROG): $(OBJECTS)
 	$(CC) $(LIBS) $(LDFLAGS) $(OBJECTS) -o $@
 
diff --git a/make-blank-h.py b/make-blank-h.py
deleted file mode 100755
index 9e1c4a8..0000000
--- a/make-blank-h.py
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env python3
-
-
-# =====
-def main():
-    with open("blank.jpg", "rb") as jpg_file:
-        jpg_data = jpg_file.read()
-
-    rows = [[]]
-    for ch in jpg_data:
-        if len(rows[-1]) > 20:
-            rows.append([])
-        rows[-1].append(hex(ch))
-
-    text = ",\n\t".join(", ".join(row) for row in rows)
-    text = "const unsigned char BLANK_JPG_DATA[] = {\n\t" + text + "\n};"
-    text = "const unsigned long BLANK_JPG_SIZE = %d;\n\n" % (len(jpg_data)) + text
-    text = "const unsigned BLANK_JPG_HEIGHT = 480;\n\n" + text
-    text = "const unsigned BLANK_JPG_WIDTH = 640;\n" + text
-
-    with open("src/blank.h", "w") as h_file:
-        h_file.write(text)
-
-
-# =====
-if __name__ == "__main__":
-    main()
diff --git a/src/blank.h b/src/data/blank.h
similarity index 100%
rename from src/blank.h
rename to src/data/blank.h
diff --git a/blank.jpg b/src/data/blank.jpg
similarity index 100%
rename from blank.jpg
rename to src/data/blank.jpg
diff --git a/src/http.c b/src/http.c
index 932e594..b329f8d 100644
--- a/src/http.c
+++ b/src/http.c
@@ -18,7 +18,7 @@
 #include "stream.h"
 #include "http.h"
 
-#include "blank.h"
+#include "data/blank.h"
 
 
 #define BOUNDARY "boundarydonotcross"
diff --git a/tools/make-jpg-h.py b/tools/make-jpg-h.py
new file mode 100755
index 0000000..10802f0
--- /dev/null
+++ b/tools/make-jpg-h.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+
+
+import sys
+
+
+# =====
+def main():
+    assert len(sys.argv) == 6, "%s <src> <dest> <prefix> <width> <height>" % (sys.argv[0])
+
+    src = sys.argv[1]
+    dest = sys.argv[2]
+    prefix = sys.argv[3]
+    width = int(sys.argv[4])
+    height = int(sys.argv[5])
+
+    with open(src, "rb") as jpg_file:
+        jpg_data = jpg_file.read()
+
+    rows = [[]]
+    for ch in jpg_data:
+        if len(rows[-1]) > 20:
+            rows.append([])
+        rows[-1].append(hex(ch))
+
+    text = ",\n\t".join(", ".join(row) for row in rows)
+    text = "const unsigned char %s_JPG_DATA[] = {\n\t%s\n};" % (prefix, text)
+    text = "const unsigned long %s_JPG_SIZE = %d;\n\n" % (prefix, len(jpg_data)) + text
+    text = "const unsigned %s_JPG_HEIGHT = %d;\n\n" % (prefix, height) + text
+    text = "const unsigned %s_JPG_WIDTH = %d;\n" % (prefix, width) + text
+
+    with open(dest, "w") as h_file:
+        h_file.write(text)
+
+
+# =====
+if __name__ == "__main__":
+    main()