diff --git a/pdf/pdf_font.c b/pdf/pdf_font.c
index 5e54e0b..38bd1d8 100644
--- a/pdf/pdf_font.c
+++ b/pdf/pdf_font.c
@@ -182,8 +182,13 @@ pdf_load_builtin_font(fz_context *ctx, pdf_font_desc *fontdesc, char *fontname)
 	if (!data)
 		fz_throw(ctx, "cannot find builtin font: '%s'", fontname);
 
+#ifndef NOBUILTINFONT
 	fontdesc->font = fz_new_font_from_memory(ctx, data, len, 0, 1);
 	/* RJW: "cannot load freetype font from memory" */
+#else
+	fontdesc->font = fz_new_font_from_file(ctx, data, 0, 1);
+	free(data);
+#endif
 
 	if (!strcmp(fontname, "Symbol") || !strcmp(fontname, "ZapfDingbats"))
 		fontdesc->flags |= PDF_FD_SYMBOLIC;
@@ -199,8 +204,13 @@ pdf_load_substitute_font(fz_context *ctx, pdf_font_desc *fontdesc, int mono, int
 	if (!data)
 		fz_throw(ctx, "cannot find substitute font");
 
+#ifndef NOBUILTINFONT
 	fontdesc->font = fz_new_font_from_memory(ctx, data, len, 0, 1);
 	/* RJW: "cannot load freetype font from memory" */
+#else
+	fontdesc->font = fz_new_font_from_file(ctx, data, 0, 1);
+	free(data);
+#endif
 
 	fontdesc->font->ft_substitute = 1;
 	fontdesc->font->ft_bold = bold && !ft_is_bold(fontdesc->font->ft_face);
@@ -218,7 +228,12 @@ pdf_load_substitute_cjk_font(fz_context *ctx, pdf_font_desc *fontdesc, int ros,
 		fz_throw(ctx, "cannot find builtin CJK font");
 
 	/* a glyph bbox cache is too big for droid sans fallback (51k glyphs!) */
+#ifndef NOBUILTINFONT
 	fontdesc->font = fz_new_font_from_memory(ctx, data, len, 0, 0);
+#else
+	fontdesc->font = fz_new_font_from_file(ctx, data, 0, 0);
+	free(data);
+#endif
 	/* RJW: "cannot load builtin CJK font" */
 
 	fontdesc->font->ft_substitute = 1;
diff --git a/pdf/pdf_fontfile.c b/pdf/pdf_fontfile.c
index 543ce76..a076033 100644
--- a/pdf/pdf_fontfile.c
+++ b/pdf/pdf_fontfile.c
@@ -1,6 +1,8 @@
 #include "fitz.h"
 #include "mupdf.h"
 
+#ifndef NOBUILTINFONT
+
 #ifdef NOCJK
 #define NOCJKFONT
 #endif
@@ -129,3 +131,112 @@ pdf_find_substitute_cjk_font(int ros, int serif, unsigned int *len)
 	return NULL;
 #endif
 }
+
+#else // NOBUILTINFONT
+
+unsigned char *
+get_font_file(char *name)
+{
+	char *fontdir;
+	char *filename;
+	int len;
+	fontdir = getenv("FONTDIR");
+	if(fontdir == NULL) {
+		fontdir = "./fonts";
+	}
+	len = strlen(fontdir) + strlen(name) + 2;
+	filename = malloc(len);
+	if(filename == NULL) {
+		return NULL;
+	}
+	snprintf(filename, len, "%s/%s", fontdir, name);
+	return filename;
+}
+
+unsigned char *
+pdf_find_builtin_font(char *name, unsigned int *len)
+{
+	*len = 0;
+	if (!strcmp("Courier", name)) {
+		return get_font_file("NimbusMonL-Regu.cff");
+	}
+	if (!strcmp("Courier-Bold", name)) {
+		return get_font_file("NimbusMonL-Bold.cff");
+	}
+	if (!strcmp("Courier-Oblique", name)) {
+		return get_font_file("NimbusMonL-ReguObli.cff");
+	}
+	if (!strcmp("Courier-BoldOblique", name)) {
+		return get_font_file("NimbusMonL-BoldObli.cff");
+	}
+	if (!strcmp("Helvetica", name)) {
+		return get_font_file("NimbusSanL-Regu.cff");
+	}
+	if (!strcmp("Helvetica-Bold", name)) {
+		return get_font_file("NimbusSanL-Bold.cff");
+	}
+	if (!strcmp("Helvetica-Oblique", name)) {
+		return get_font_file("NimbusSanL-ReguItal.cff");
+	}
+	if (!strcmp("Helvetica-BoldOblique", name)) {
+		return get_font_file("NimbusSanL-BoldItal.cff");
+	}
+	if (!strcmp("Times-Roman", name)) {
+		return get_font_file("NimbusRomNo9L-Regu.cff");
+	}
+	if (!strcmp("Times-Bold", name)) {
+		return get_font_file("NimbusRomNo9L-Medi.cff");
+	}
+	if (!strcmp("Times-Italic", name)) {
+		return get_font_file("NimbusRomNo9L-ReguItal.cff");
+	}
+	if (!strcmp("Times-BoldItalic", name)) {
+		return get_font_file("NimbusRomNo9L-MediItal.cff");
+	}
+	if (!strcmp("Symbol", name)) {
+		return get_font_file("StandardSymL.cff");
+	}
+	if (!strcmp("ZapfDingbats", name)) {
+		return get_font_file("Dingbats.cff");
+	}
+	return NULL;
+}
+
+unsigned char *
+pdf_find_substitute_font(int mono, int serif, int bold, int italic, unsigned int *len)
+{
+	if (mono) {
+		if (bold) {
+			if (italic) return pdf_find_builtin_font("Courier-BoldOblique", len);
+			else return pdf_find_builtin_font("Courier-Bold", len);
+		} else {
+			if (italic) return pdf_find_builtin_font("Courier-Oblique", len);
+			else return pdf_find_builtin_font("Courier", len);
+		}
+	} else if (serif) {
+		if (bold) {
+			if (italic) return pdf_find_builtin_font("Times-BoldItalic", len);
+			else return pdf_find_builtin_font("Times-Bold", len);
+		} else {
+			if (italic) return pdf_find_builtin_font("Times-Italic", len);
+			else return pdf_find_builtin_font("Times-Roman", len);
+		}
+	} else {
+		if (bold) {
+			if (italic) return pdf_find_builtin_font("Helvetica-BoldOblique", len);
+			else return pdf_find_builtin_font("Helvetica-Bold", len);
+		} else {
+			if (italic) return pdf_find_builtin_font("Helvetica-Oblique", len);
+			else return pdf_find_builtin_font("Helvetica", len);
+		}
+	}
+}
+
+unsigned char *
+pdf_find_substitute_cjk_font(int ros, int serif, unsigned int *len)
+{
+	*len = 0;
+	return get_font_file("droid/DroidSansFallback.ttf");
+}
+
+#endif // NOBUILTINFONT