Nonogram is a free online tool that generates logic-grid pixel puzzles — read the number clues beside each row and column, deduce where the filled cells hide, and reveal the picture one cell at a time. No account, nothing leaves the page.
Tip: press F to switch Fill / X mode. Click a filled or marked cell again to erase it.
Time 0:00 · Moves 0 · Mistakes 0 · Filled 0 / 0
How to play
A clue of 3 1 means that line contains a run of 3 filled cells, then at least one gap, then a single filled cell — in that order.
A clue of 0 means the whole line is empty: mark every cell with X.
Fill a cell you are sure about; mark cells you are sure are empty. A wrong fill counts as a mistake, but you can erase it and keep going.
You win when every solution cell is filled and no wrong cell is filled.