Six puzzles, one to a page, answers at the back. Your browser's print dialog will save them as a PDF.
Before you print
Turn background graphics on in the print dialog if the answers come out blank — the filled squares are a background colour, kept grey rather than black so a 20×20 answer does not soak the page.
The puzzles do not carry their names. A nonogram's title is its answer, and you will know it as soon as the picture appears.