Turning your own photo into a nonogram: a step-by-step guide

Nonograms in a nutshell

A nonogram — also called picross or a Japanese crossword — is a puzzle where the numbers along the edges tell you how many cells in a row to fill in each line and column. “3 1” means a block of three, at least one gap, then a single filled cell. Step by step, the filled cells reveal a picture. The nonogram game on playparty.live has a bank of 81 pictures, grids from 5×5 to 20×20 and races for up to four players on the same puzzle.

The best puzzle, though, is one you or a friend made. A nonogram of your cat, your initials or the silhouette of a landmark from your last trip is a small gift that people love to solve.

Three tricks to solve faster

• Start with big numbers. In a 10-cell line with an “8”, the middle 6 cells are filled no matter what — the block cannot fit any other way.
• Use crosses. A long tap places ✖, meaning “definitely empty”. Crosses matter as much as filled cells: they constrain the neighbouring lines.
• Alternate rows and columns. Every new cell in a row is a clue for a column, so keep circling the grid.

Making a nonogram from a photo, step by step

1. Open the nonogram game, create a room and tap “🎨 Create a nonogram” in the lobby.
2. Pick the grid: photos work at 10×10 and 15×15. 10×10 suits silhouettes and icons; 15×15 holds more detail.
3. Tap “From photo” and choose an image up to 5 MB. The whole picture is fitted into the square, with white margins around it.
4. Move the “Brightness threshold” slider and watch the grid update live. The starting position is set automatically; keep adjusting until the silhouette is recognisable.
5. If your subject is light on a dark background, tap “Invert” so the light cells become the filled ones.
6. Touch up with your finger if needed: the brush fills cells, the eraser clears them.
7. Tap “Done”, then “Check”. The server solves the puzzle and tells you whether the solution is unique.

Why the solution must be unique

A good nonogram is solved by logic, not guesswork. If one set of numbers has two different solutions, a player can follow every clue correctly and still not match your picture. So “Check” runs the grid through a solver. You will see “The solution is unique — you can save it”, “The solution is unique, but a few steps need guessing”, or an error: too few cells, the whole grid filled, several solutions. For photo-based grids the server can tweak up to eight cells itself to make the solution unique, and it tells you how many it changed.

Which photos work best

• One subject on a plain background. A cat on a pale sofa, a mug on a white table, a person against the sky.
• High contrast. Dark on light or the other way round. Grey on grey turns into noise.
• Close-ups. Crop the photo first so the subject fills the frame: the whole image is fitted in, and a small subject drowns in empty margins.
• Simple shapes. A heart, a star, a letter, a logo, a dog in profile. Faces are barely recognisable at 15×15 — a profile silhouette works better.
• Hand drawings. Snap a child’s marker drawing and you have a perfect puzzle for grandma.

Saving and sharing

Anyone can draw and check puzzles for free. Saving your own levels is a Premium subscription feature: give the puzzle a name of up to 24 characters and tap “Save”. Your phone then offers to share a link — send it to any messenger. Friends open the puzzle and solve it free, with no sign-up: the author pays, not the people who play. You can keep up to 60 of your own puzzles and submit the best ones for moderation; once approved, they join the public list of published levels.

Your level is not just for solo play — you can pick it in the lobby for a race: up to four players get the same puzzle, rivals show only as a progress percentage, and everyone has three lives with a 30-second penalty per mistake. A 10×10 grid gets 15 minutes, a 15×15 half an hour.

Gift ideas

• For your partner. A heart with initials or the silhouette of your first-date spot. Long-distance couples get one more way to play together — see games for long-distance relationships.
• For a birthday. Their age as a number or a favourite pet, to solve before the cake. More ideas in birthday party games.
• For coworkers. The company logo or the team mascot — five minutes on a break. More short formats in quick games for a break.
• For kids. Their own drawing turned into a puzzle gets solved with special enthusiasm.

Without a photo

The editor has two other picture sources. Draw a grid from scratch with your finger, or ask the AI for pixel art from a description like “a cat wearing glasses”. AI generation is also a premium feature, up to 10 pictures a day. Every option goes through the same unique-solution check. And if you just want to solve, the bank has 81 ready pictures; logic fans may also enjoy the Sudoku Duel.

FAQ

Can I make a colour nonogram from a photo?

No: custom levels are always black and white, 10×10 or 15×15. Colour puzzles are in the bank for subscribers.

Is my photo uploaded to a server?

No. The image is processed in the browser on your device; only the grid of cells is sent to the server.

Do my friends need a subscription to solve my puzzle?

No. Anyone can play shared levels from a link for free.

It says “several solutions” — what now?

Add or remove a couple of cells in the highlighted lines and check again. Nudging the brightness slider often does the trick.