diff --git a/sensor_msgs/msg/CompressedImage.msg b/sensor_msgs/msg/CompressedImage.msg
index 12a724d5..9ef18a30 100644
--- a/sensor_msgs/msg/CompressedImage.msg
+++ b/sensor_msgs/msg/CompressedImage.msg
@@ -1,13 +1,16 @@
 # This message contains a compressed image.
 
-std_msgs/Header header # Header timestamp should be acquisition time of image
+std_msgs/Header header       # Header timestamp should be acquisition time of image
                              # Header frame_id should be optical frame of camera
                              # origin of frame should be optical center of cameara
                              # +x should point to the right in the image
                              # +y should point down in the image
                              # +z should point into to plane of the image
 
-string format                # Specifies the format of the data
+uint32 height                # image height, that is, number of rows
+uint32 width                 # image width, that is, number of columns
+
+string pixel_format          # Specifies the format of the data
                              # Acceptable values differ by the image transport used:
                              # - compressed_image_transport:
                              #     ORIG_PIXFMT; CODEC compressed [COMPRESSED_PIXFMT]
@@ -38,4 +41,10 @@ string format                # Specifies the format of the data
                              #   need for successful decoding of the image. Refer to
                              #   documentation of the other transports for details.
 
+string compression_type      # Compression type used (jpeg, png, theora, etc)
+
+uint64 sequence_number       # sequence number
+uint64 flags                 # flags (for example: KEYFRAME)
+uint8 is_bigendian           # is this data bigendian?
+
 uint8[] data                 # Compressed image buffer