diff --git a/programs/develop/libraries/libs-dev/.test/003/in_1bpp.png b/programs/develop/libraries/libs-dev/.test/003/in_1bpp.png
deleted file mode 100644
index 967b75b5c2..0000000000
Binary files a/programs/develop/libraries/libs-dev/.test/003/in_1bpp.png and /dev/null differ
diff --git a/programs/develop/libraries/libs-dev/.test/003/in_1bpp.wbmp b/programs/develop/libraries/libs-dev/.test/003/in_1bpp.wbmp
new file mode 100644
index 0000000000..1a575b79d7
Binary files /dev/null and b/programs/develop/libraries/libs-dev/.test/003/in_1bpp.wbmp differ
diff --git a/programs/develop/libraries/libs-dev/.test/003/in_8bpp.png b/programs/develop/libraries/libs-dev/.test/003/in_8bpp.png
deleted file mode 100644
index 2d11838add..0000000000
Binary files a/programs/develop/libraries/libs-dev/.test/003/in_8bpp.png and /dev/null differ
diff --git a/programs/develop/libraries/libs-dev/.test/003/in_8bpp.tiff b/programs/develop/libraries/libs-dev/.test/003/in_8bpp.tiff
new file mode 100644
index 0000000000..1f539cbd1e
Binary files /dev/null and b/programs/develop/libraries/libs-dev/.test/003/in_8bpp.tiff differ
diff --git a/programs/develop/libraries/libs-dev/.test/003/test003.asm b/programs/develop/libraries/libs-dev/.test/003/test003.asm
index 6b6a46dded..84c4de11bb 100644
--- a/programs/develop/libraries/libs-dev/.test/003/test003.asm
+++ b/programs/develop/libraries/libs-dev/.test/003/test003.asm
@@ -74,6 +74,28 @@ START:
 	stosb
 	dec	ecx
 	jnz	@b
+
+	stdcall	[img.encode], [image_to_rgb2], (LIBIMG_FORMAT_ID_PNM), 0
+;	stdcall	[img.encode], [image_initial], (LIBIMG_FORMAT_ID_PNM), 0
+	test	eax, eax
+	jz	exit
+	mov	[encoded_file], eax
+	mov	[encoded_file_size], ecx
+
+	invoke	file.open, output_file, O_WRITE OR O_CREATE
+	or	eax, eax
+	jz	exit
+	mov	[fh], eax
+
+	invoke	file.write, [fh], [encoded_file], [encoded_file_size]
+	cmp	eax, [encoded_file_size]
+	jne	exit
+
+	invoke	file.close, [fh]
+	inc	eax
+	jz	exit
+
+	stdcall	mem.Free, [encoded_file]
 ;-----------------------------------------------------------------------------
 
 redraw:
@@ -176,9 +198,15 @@ endp
 
 ;-----------------------------------------------------------------------------
 
-window_title	db 'img.to_rgb2 test app',0
+window_title	db 'libimg to_rgb2 & encode demo',0
 
+;input_file	db '/hd0/1/in_1bpp.wbmp',0
+;input_file	db '/hd0/1/in_8bpp.tiff',0
 input_file	db '/hd0/1/in_32bpp.png',0
+
+;output_file	db '/hd0/1/out_1bpp.pnm',0
+;output_file	db '/hd0/1/out_8bpp.pnm',0
+output_file	db '/hd0/1/out_24bpp.pnm',0
 ;-----------------------------------------------------------------------------
 
 align 16
@@ -193,23 +221,29 @@ import	libio			  , \
 	file.size  , 'file_size'  , \
 	file.open  , 'file_open'  , \
 	file.read  , 'file_read'  , \
+	file.write , 'file_write' , \
 	file.close , 'file_close'
 
 import	libimg			   , \
 	libimg.init , 'lib_init'   , \
 	img.draw    , 'img_draw'   , \
 	img.decode  , 'img_decode' , \
+	img.encode  , 'img_encode' , \
 	img.create  , 'img_create' , \
 	img.destroy , 'img_destroy', \
-	img.to_rgb2 , 'img_to_rgb2'
+	img.to_rgb2 , 'img_to_rgb2', \
+	img.formats_table, 'img_formats_table'
 
 ;-----------------------------------------------------------------------------
 
 I_END:
 
-img_data	dd ?
-img_data_len	dd ?
-fh		dd ?
+img_data	  dd ?
+img_data_len	  dd ?
+fh		  dd ?
 
-image_initial	dd ?
-image_to_rgb2	dd ?
+image_initial	  dd ?
+image_to_rgb2	  dd ?
+
+encoded_file	  dd ?
+encoded_file_size dd ?