Enter the row and column clues from your picture puzzle, then use the completed grid to check the cells you need. This free Nonogram solver runs locally in your browser. Enter your Nonogram clues Use one line per row or column. Separate blocks with spaces, for example 3 2 . Use - for a completely empty line. Copy clues, not pixels Line clues are quicker and more accurate than trying to recreate a screenshot cell by cell. Play a picture puzzle online Try a new Nonogram in a separate tab, then come back with the clues if you get stuck. Use a Nonogram solver when the clue lines stop being obvious A Nonogram is a logic picture puzzle built from two sets of numbers. The row clues tell you how many consecutive filled cells appear from left to right; the column clues describe the same image from top to bottom. A clue of 3 2 , for example, requires a run of three filled cells, at least one blank cell, and then a run of two. The challenge is that the runs may shift until crossing lines rule out positions. This free Nonogram solver evaluates those crossings for you and shows a grid that matches both lists. The tool is useful after you have already made the easy opening moves but a line still has several legal placements. Rather than guessing which placement looks like a picture, copy the complete clue list and let the constraints decide. You can then return to the original puzzle with a clear reference. It works for classic black-and-white grids, logic picture apps, and other puzzles that use standard row and column clues. Input order matters: rows go from top to bottom; columns go from left to right. Preserve every line, including an empty one, because the position of an empty line is information. How to enter clues correctly Set the grid size before pasting Choose the number of rows and columns printed by the original puzzle. The editor creates one line for each direction. A 10 by 15 puzzle needs ten row lines and fifteen column lines. If you change the dimensions after typing, the fields reset so that old clues cannot accidentally be interpreted against a new shape. Write blocks with spaces Put a space between each block on the same line. Type 4 for one run of four, 1 1 3 for three separate runs, and - for a line with no filled cells. Commas also work, but spaces make it easiest to compare the text with most puzzle interfaces. Do not insert zeros between blocks; a blank separator is already required by the puzzle rule. Use the sample to confirm the format Load sample fills both lists with a small symmetric puzzle. It is a safe way to see the expected line count and result style before replacing the data with your own clues. The sample is not mixed with your puzzle unless you intentionally load it. What the online Nonogram solver checks

For every clue line, the solver first creates all patterns that can fit the available length. It removes any row pattern that conflicts with fixed information implied by the column patterns, then does the same for columns. This propagation continues until the grid is fixed or no further direct eliminations remain. If needed, the solver tests a remaining compatible pattern and verifies it against every crossing line. A valid displayed grid therefore obeys every row and every column clue you supplied. If the clues are inconsistent, the result stays empty and the status line explains that no solution matches. If there is more than one valid grid, the page says so instead of pretending that the first result is uniquely forced. That distinction is important for checking a published puzzle: a proper puzzle normally has one intended answer. Fix common Nonogram clue mistakes Line count error: count each row or column line, not each number. A six-row puzzle requires six row entries even if some entries are just dashes. The status message names Rows or Columns so you can correct the right field. Impossible line: a clue can be too long for its line. In a five-cell row, 3 3 cannot fit because the two blocks need a separating blank. Recheck the original clue or the chosen width. Unexpected picture: a one-line shift changes the entire image. Compare the first and last few clues with the original and make sure you copied rows and columns in the intended directions. A screenshot can help you transcribe, but the solver only needs the numbers. Practical logic to use alongside the tool Even with a Nonogram helper, it is worth recognizing the strongest manual deductions. A clue of five in a five-cell line fills everything. A seven in a ten-cell line has a three-cell overlap in the center, regardless of where the run starts. When a confirmed empty or filled cell appears, shrink the possible placements on that line and then inspect its crossings. These techniques explain why the result is true and make it faster to spot a typo before solving. For large pictures, solve the outer clue lists in small batches. Use the completed output to check one uncertain region, reveal or mark those cells in the game, and then revisit the remaining area. Your clues remain on the device; the page does not send a grid image or puzzle state to a server. Frequently asked questions Is Nonogram the same as Picross? They use the same row-and-column logic. This page focuses on the Nonogram search term and clue format; the Picross Solver has Picross-specific guidance. Can I solve an empty row or column? Yes. Enter a dash ( - ) or zero on that line. It tells the solver that every cell in that line must be empty. Does the solver work on a phone? Yes. The two clue fields and solution grid are responsive, and you can paste text from a mobile puzzle app. A short checklist before you trust the grid Read each clue as a sequence of groups, not as a sum. A row marked 2 2 and a row marked 4 both contain four filled cells, yet they impose different empty spaces and will create different crossings. Verify the dimension, the first and last line on each side, and every dash before treating an output as final. If you are transcribing from a screen, enlarge the puzzle first; a small digit is more likely to be missed than a whole line. This deliberate check is faster than trying to identify a typo after a complex result appears. This makes later troubleshooting considerably quicker and less frustrating. More free puzzle solvers