Answers.Body: <p>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 <code>1_st.912.bmp</code>.</p>
  
  <p>So if you have image with right resolution you can do this:</p>
  
  <pre><code>$ 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
  </code></pre>
  
  <p>Here's another example, how I converted <a href="http://www.openbsd.org/art/puffy/puf800X689.gif" rel="nofollow">OpenBSD's puffy</a> to pocketbook logo.</p>
  
  <pre><code>$ 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
  </code></pre>
  
  <p>This command will resize canvas, center original image and convert it to supported by pocketbook bmp file. <em>Note</em>: since you have other resolution, you should change <code>825x1200</code> string to your device's resolution.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2024-06-01T12:48:29.387Z
Answers.Text: I wish I found this answer a decade ago. After attempting the solution several times over the years, I finally figured it out a year ago, and typed up my own version at https://superuser.com/a/1778509/133421
Answers.UserDisplayName: andrybak
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-01T17:23:39.040Z
Answers.LastActivityDate: 2015-09-01T17:23:39.040Z
Answers.UserDisplayName: Slava Bacherikov
Body: <p>I have two images in logo folder preinstalled in ebook (Pocketbook 612).</p>
  
  <p>Well, I take them and see this information.</p>
  
  <pre><code>&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
  </code></pre>
  
  <p>Next, I try to create same formatted images with <code>convert</code> utility of <code>imagemagick</code> and with <code>gimp</code>.</p>
  
  <p><strong>Convert utility</strong></p>
  
  <p>I use this command to create images:</p>
  
  <pre><code> convert Ah.jpg -resize \!600x800 -colorspace Gray -depth 8 -type palette Ah.bmp
  </code></pre>
  
  <p>And <code>identify</code> check:</p>
  
  <pre><code>&gt; identify Ah.bmp 
  &gt; Ah.bmp BMP 600x800 600x800+0+0 8-bit PseudoClass 256c 508KB 0.020u 0:00.030
  </code></pre>
  
  <p>But book says: unsupported format</p>
  
  <p><strong>GIMP</strong></p>
  
  <p>I try to create pictures by gimp, cut them to size 600x800 and use grayscale mode.</p>
  
  <p>And <code>identify</code> check:</p>
  
  <blockquote>
    <p>identify Oh.bmp
    Oh.bmp BMP 600x800 600x800+0+0 8-bit DirectClass 1.44MB 0.000u 0:00.010</p>
  </blockquote>
  
  <p>Again, book says: unsupported format</p>
  
  <p>Also, I rename pictures with suffix <code>.612</code> <code>(Oh.612.bmp)</code> but this method doesn't work too.</p>
  
  <p>Could anybody help me?</p>
  
Tags: <file-format><ebook-management>
Title: How to create Pocketbook logo?
UserDisplayName: gaussblurinc
ThreadText: # How to create Pocketbook logo?
  
  (Asked by: username_0 on 2015-01-05)
  
  I have two images in logo folder preinstalled in ebook (Pocketbook 612).
  Well, I take them and see this information.
  > identify 1_st.bmp
  > 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:
  > identify Ah.bmp 
  > 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?
  
  **Tags:** file-format, ebook-management
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-09-01. Score: 2 | Accepted 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.
  
  > **Comments:**
  > **username_2**: I wish I found this answer a decade ago. After attempting the solution several times over the years, I finally figured it out a year ago, and typed up my own version at https://superuser.com/a/1778509/133421  
  
  ---
  
  