diff --git a/src/escpos/image.gleam b/src/escpos/image.gleam
index 835cf20..80faf92 100644
--- a/src/escpos/image.gleam
+++ b/src/escpos/image.gleam
@@ -1,10 +1,13 @@
-//// Module to parse/dither PBM/PGM image to be printed on monochrome
+//// Module to parse and dither PBM/PGM images to be printed on monochrome
 //// printers.
 //// There are printers that can print grayscale or even color, if
 //// you want to do that, you'll need to implement that yourself
 //// and/or leverage the `protocol` module directly.
+//// 
+//// 80mm printers usually have a maximum of 640 dots width.
+//// There is no validation so please check your image beforehand.
 ////
-//// Thank you jak for the pgm reading and bayer dithering
+//// Thank you jak for the pgm reading and bayer dithering 💕
 
 import gleam/float
 import gleam/int
@@ -58,7 +61,8 @@ pub fn from_pgm(pgm: BitArray) -> Result(GrayscaleImage, ImageError) {
       use #(width, rest) <- result.try(parse_number(rest, 0))
       use #(height, rest) <- result.try(parse_number(rest, 0))
       case rest {
-        <<"255\n", pixels:bytes>> -> Ok(GrayscaleImage(width:, height:, pixels:))
+        <<"255\n", pixels:bytes>> ->
+          Ok(GrayscaleImage(width:, height:, pixels:))
         _ -> Error(ParseError)
       }
     }
@@ -171,7 +175,10 @@ fn dither_bayer(
   }
 }
 
-fn dither_map(image: GrayscaleImage, fun: fn(Int, Int, Int) -> Int) -> PrintableImage {
+fn dither_map(
+  image: GrayscaleImage,
+  fun: fn(Int, Int, Int) -> Int,
+) -> PrintableImage {
   let pixels =
     dither_loop(image.pixels, image.width, 0, 0, <<>>, fun)
     |> byte_align_rows(image.width)