Nonograms, also called griddlers or picture cross puzzles, hide a picture in a grid. The numbers beside each row and above each column tell you the lengths of the filled blocks in that line, in order. Work out which squares must be filled and which must stay empty, and a heart, a cat or a boat appears. Every puzzle here is checked to be solvable by pure logic.
loading toolHow to solve a nonogram
- Choose a picture or a random size, then New puzzle.
- Tap squares to fill them; drag to fill several at once.
- Switch to “✕ Mark empty” (or right-click) to mark squares that must stay blank.
- When every row and column matches its clue, the puzzle is solved.
Good to know
- Clues turn grey when that row or column matches them.
- Thick lines every 5 squares make counting easier on bigger grids.
- On a keyboard: arrows move, Space fills, X marks empty.
Questions
How do I read the clues?
“3 1” means that line has a block of 3 filled squares, then at least one gap, then a single filled square. A clue of 0 means the whole line is empty.
Where should I start?
Look for big numbers. In a 10-square row, a clue of 8 means the middle 6 squares must be filled whatever the position of the block. Mark squares you know are empty with ✕ to keep track.
Do I ever have to guess?
No. Before you see a puzzle, our solver checks it can be finished one line at a time using only the clues. If it cannot, a different puzzle is made.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
