diff --git a/tools/libtxt/font.c b/tools/libtxt/font.c
index 69c8fe8..e321e0c 100644
--- a/tools/libtxt/font.c
+++ b/tools/libtxt/font.c
@@ -99,19 +99,11 @@ static const char *read_xbm_file(FILE *file, struct image *img)
 }
 
 
-struct image *load_image(const char *name, const char **error)
+struct image *load_image_file(FILE *file, const char **error)
 {
-	FILE *file;
 	struct image *img;
 	const char *err;
 
-	file = fopen(name, "r");
-	if (!file) {
-		if (error)
-			*error = alloc_sprintf("%s: %s", name, strerror(errno));
-		return NULL;
-	}
-
 	img = alloc_type(struct image);
 	err = read_xbm_file(file, img);
 	if (err) {
@@ -124,6 +116,23 @@ struct image *load_image(const char *name, const char **error)
 }
 
 
+struct image *load_image(const char *name, const char **error)
+{
+	FILE *file;
+	struct image *img;
+
+	file = fopen(name, "r");
+	if (!file) {
+		if (error)
+			*error = alloc_sprintf("%s: %s", name, strerror(errno));
+		return NULL;
+	}
+	img = load_image_file(file, error);
+	fclose(file);
+	return img;
+}
+
+
 void free_image(struct image *img)
 {
 	if (img) {
diff --git a/tools/libtxt/libtxt.h b/tools/libtxt/libtxt.h
index 7aea2bf..49973df 100644
--- a/tools/libtxt/libtxt.h
+++ b/tools/libtxt/libtxt.h
@@ -13,6 +13,9 @@
 #ifndef LIBTXT_H
 #define LIBTXT_H
 
+#include <stdio.h>
+
+
 struct image;
 
 struct font;
@@ -51,6 +54,7 @@ struct edit {
  * Newline leaves one blank row between text lines.
  */
 
+struct image *load_image_file(FILE *file, const char **error);
 struct image *load_image(const char *name, const char **error);
 void free_image(struct image *img);