diff --git a/src/output.zig b/src/output.zig
index 387a2ad..e1a872e 100644
--- a/src/output.zig
+++ b/src/output.zig
@@ -9,10 +9,6 @@ const RLE_Unit = struct {
 };
 
 const Huffman = std.AutoHashMap(u8, HuffCode);
-// const HuffCode = struct {
-//     n_bits: u8,
-//     value: u16,
-// };
 const HuffCode = struct {
     value: u16,
     n_bits: u5,
@@ -82,6 +78,13 @@ const Scan = struct {
             try dump_huffman(f, huff_meta, i);
         }
     }
+
+    fn dump_scan(self: *Self, f: std.fs.File) !void {
+        _ = self;
+        _ = try f.write(&[_]u8{ 0xff, 0xda, 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00 });
+
+        _ = try f.write(&[2]u8{ 0xff, 0xd9 });
+    }
 };
 
 inline fn get_idx_min2(freqs: []u32) ?struct { usize, usize } {
@@ -268,6 +271,7 @@ fn parse_block(block: *util.BlockQuantized, dc_diff: *i16, rle: *RLE_Seq, dc_fre
         .symbol = symbol,
         .value = diff,
     });
+    dc_diff.* = block[0];
     var curr_rlen: u8 = 0;
     for (1..64) |i| {
         if (block[i] == 0) {
@@ -298,7 +302,7 @@ fn parse_block(block: *util.BlockQuantized, dc_diff: *i16, rle: *RLE_Seq, dc_fre
 fn write_headers(f: std.fs.File, buff: *const util.Buffers) !void {
     const w = buff.Y.len * 16;
     const h = buff.Y[0].len * 16;
-    std.debug.print("{any} {any}\n", .{ w, h });
+
     var out_buff = [6]u8{ 0xff, 0xd8, 0xff, 0xdb, 0x00, 0x84 } ++ [1]u8{0x00} ++ [_]u8{0x00} ** 64 ++ [1]u8{0x01} ++ [_]u8{0x00} ** 64;
     for (0..64) |i| {
         out_buff[7 + i] = @intFromFloat(buff.Q_Lum[i]);
@@ -329,6 +333,7 @@ pub fn generate_jpg(buff: util.Buffers, alloc: std.mem.Allocator) !void {
     try write_headers(f, &buff);
 
     try scan_data.do_rle_freq_pass(&buff, f);
+    try scan_data.dump_scan(f);
 
     // rle, huffman pass
     // file headers