title_body: How to create Pocketbook logo? I have two images in logo folder preinstalled in ebook (Pocketbook 612).
  
  Well, I take them and see this information.
  
  &gt; identify 1_st.bmp
  &gt; 1_st.612.bmp BMP 600x800 600x800+0+0 8-bit PseudoClass 256c 481KB 0.000u 0:00.010
  
  
  Next, I try to create same formatted images with convert utility of imagemagick and with gimp.
  
  Convert utility
  
  I use this command to create images:
  
   convert Ah.jpg -resize \!600x800 -colorspace Gray -depth 8 -type palette Ah.bmp
  
  
  And identify check:
  
  &gt; identify Ah.bmp 
  &gt; Ah.bmp BMP 600x800 600x800+0+0 8-bit PseudoClass 256c 508KB 0.020u 0:00.030
  
  
  But book says: unsupported format
  
  GIMP
  
  I try to create pictures by gimp, cut them to size 600x800 and use grayscale mode.
  
  And identify check:
  
  
    identify Oh.bmp
    Oh.bmp BMP 600x800 600x800+0+0 8-bit DirectClass 1.44MB 0.000u 0:00.010
  
  
  Again, book says: unsupported format
  
  Also, I rename pictures with suffix .612 (Oh.612.bmp) but this method doesn't work too.
  
  Could anybody help me?
upvoted_answer: I met with same problem on my Pocketbook 912, and after some time I figured out how to solve it. BMP should be in indexed color mode and without compression. ImageMagick by default producing RLE compressed bmp.
  For indexed palette I am using default logo image 1_st.912.bmp.
  
  So if you have image with right resolution you can do this:
  
  $ convert someimage.png \
      -background white \
      -alpha remove \
      -depth 8 \
      -colors 256 \
      -type grayscale \
      -remap 1_st.912.bmp \
      -dither FloydSteinberg \
      -compress none  BMP3:outlogo.912.bmp
  
  
  Here's another example, how I converted OpenBSD's puffy to pocketbook logo.
  
  $ wget -O Puffy.gif http://www.openbsd.org/art/puffy/puf800X689.gif # download image
  $ convert Puffy.gif \
      -background white -gravity center -extent 825x1200  \
      -alpha remove -depth 8 -colors 256 -type grayscale \
      -remap 1_st.912.bmp -dither FloydSteinberg -compress none \
      BMP3:puffy.912.bmp
  
  
  This command will resize canvas, center original image and convert it to supported by pocketbook bmp file. Note: since you have other resolution, you should change 825x1200 string to your device's resolution.