Perleland is a free tool that turns pictures into bead board patterns for Hama, Nabbi and Pyssla beads. Upload a picture, choose your bead size (Mini, Midi or Maxi) and the colors you have at home, and download the pattern as a PDF with color codes.
You can browse free patterns in the gallery and edit every single bead in the built-in editor — with symmetry tools, a text stamp, and export as PDF or PNG.