Nonogramm Solver 2026

Stuck on a nonogram? Type in the clues—or simply take a photo—and Nonogram Solver will calculate the solution for you.

Nonograms (also known as Picross, Griddler, Hanjie, Japanese crossword puzzles, or paint-by-numbers) are logic puzzles where numbers along the edges indicate which squares of a grid need to be colored. Nonogram Solver takes the row and column clues of a puzzle up to 25 x 25 and calculates a valid solution.

NEW: SCAN THE CODES WITH YOUR CAMERA
Point your camera at the puzzle book, book, or other screen, take a photo—the app reads the row and column numbers for you. Specialized recognition directly on your phone finds the grid, cuts out the clue areas, and recognizes each digit with a small neural network. You check the result, correct a number if necessary, and tap "Calculate." Photos never leave your device.

FEATURES

• Solves nonograms up to 25 × 25, square or rectangular
• Scan presets with your camera – no more typing dozens of numbers
• Live preview as you type; tap to zoom in
• Show the complete solution or reveal it cell by cell as a hint
• Save, search, sort, rename, and reload solved puzzles
• Guided input with back/forward and effort estimation before solving
• Built-in tutorial explaining how nonogram presets work
• Modern interface in Material Design 3

• No account, no ads, no data collection

HOW IT WORKS

1. Enter the puzzle size (rows × columns).

2. Type the preset for each row and column, e.g., "2-3-1" – or scan the puzzle with your camera.

3. Tap Calculate. The backtracking solver tries all valid row assignments and delivers the first consistent solution.

4. View, save, and reload the result at any time.

GOOD TO KNOW
Very large or ambiguous puzzles may take some time to solve on your phone; the app displays an estimated time before you start. If there's a typo in the instructions, the solver will indicate that no solution exists—so you can quickly find the error.

PRIVACY POLICY
Solving and scanning run entirely on your device—no internet connection is required. Camera permission is only used for scanning the instructions; photos and puzzles are not uploaded, and there is no advertising.

Feedback and feature requests are welcome via the support link on this page.