Can these go into a workbook I am selling?

They can. The figures are geometry rather than pictures from a library, and no AI model has been near them, so there is nothing to license and nobody to credit. This is the same reason the folds can be exact: the shape is known rather than found. That holds without any caveat about what you put in, because you do not put a picture in. The figure is constructed, so there is no earlier owner for it to have had.

Does the diagonal fold work the same way?

Yes. The cut runs corner to corner and the answer is the printed half turned over that line. It is noticeably harder than the vertical one, because the eye has no upright to measure against.

Fold the finished sheet along the ruled line and hold it to the light. The two halves are the same points reflected, so they should sit on top of each other.

Why is one of my choices refused?

A few cuts leave a single stroke on the printed side, and one stroke is not enough to work a reflection out from. Those come back and ask for a different fold or a different picture.

Mirror Drawing Generator

A symmetry sheet is only worth doing if the answer really is symmetrical. Rather than hoping a picture happens to fold neatly, this cuts the picture along the fold, keeps one side, and builds the answer by turning that side over. The two halves of the answer are the same points twice, so folding the finished sheet along the line brings them together exactly — which is the check a child can do themselves. The figures are constructed from geometry rather than sourced from a picture library or generated by an AI model, which is why a sheet from here can go into something you sell without a licence, a credit line, or a worry about where the image came from.

Picture

Difficulty

The ages are a rough guide to who a level suits. What the setting actually changes is how much of the shape is drawn — a harder sheet has more curves and corners to follow, not a smaller picture or a fainter line.

Where the fold goes

Put measuring marks along the fold

Seed (optional)

A word gives back exactly the same sheet.

Paper size

Print size

Margin

Millimetres of blank edge, 5 to 40.

Turn the paper sideways

How to print this, or save it as a PDF

There is no PDF to download, and there does not need to be. Open the print command in your browser and choose “Save as PDF” as the destination. The page addresses and dates a browser normally prints across the top and bottom are already kept off.
Set the scale to 100%, not “fit to page”. This sheet is already the exact size of the paper you chose, so anything that resizes it makes every measurement on it wrong.
Leave the paper size in the dialog set to the same one you chose here.

Your mirror sheet will appear here.

What this generator does

Cuts a picture along a fold, keeps one side, and builds the answer by turning that side over, so the finished drawing folds onto itself exactly and a child can check it by folding the paper.

How to use this tool

Choose a picture and a difficulty.
Choose where the fold goes: down the middle, across the middle, or corner to corner.
Turn the measuring marks on if the fold needs sighting from.
Make the sheet and print it.
Show the answer, or fold the finished sheet along the line to check it.

Understanding the controls

Picture: Which drawing is cut in half. Every picture works on every fold, because the fold is made rather than found.
Where the fold goes: Down the middle, across the middle, or corner to corner. The diagonal is much the hardest, because the eye has no upright to measure from.
Measuring marks: Rules a row of ticks along the fold to sight the drawing from. Worth having at the easier levels.
Difficulty: How much detail is in the picture, and therefore how much of it has to be reflected.
Seed: A word gives back exactly the same half, on the same fold.

Common use cases

Line of symmetry work in a maths lesson
Drawing practice with a right answer to check against
A calm, careful task that rewards taking time
Left and right coordination practice
Something a child can mark themselves by folding it

Randomness and fairness

The figure and where the fold falls are drawn from your browser’s secure generator unless you type a seed word. The reflection itself is never drawn at all — the answer half is the kept half turned over point for point, which is why folding the finished sheet brings the two halves together exactly. Typing the same word again returns the same figure on the same fold line; a different word moves both. A seed here makes a sheet repeatable rather than private, and the generator behind it is not cryptographic.

For how randomness is produced across the whole site, see how Generate Random works.

Limitations and good to know

What is being reflected is a geometric figure, not a detailed picture. That suits the task, but it does mean the finished drawing is a shape rather than an illustration.
The fold is always through the middle of the drawing area, on one of the three lines offered.
The pictures are line drawings. There is no shading to mirror, only the outline and its detail.

Frequently asked questions

Can these go into a workbook I am selling?: They can. The figures are geometry rather than pictures from a library, and no AI model has been near them, so there is nothing to license and nobody to credit. This is the same reason the folds can be exact: the shape is known rather than found. That holds without any caveat about what you put in, because you do not put a picture in. The figure is constructed, so there is no earlier owner for it to have had.
Does the diagonal fold work the same way?: Yes. The cut runs corner to corner and the answer is the printed half turned over that line. It is noticeably harder than the vertical one, because the eye has no upright to measure against.
How do I mark it?: Fold the finished sheet along the ruled line and hold it to the light. The two halves are the same points reflected, so they should sit on top of each other.
Why is one of my choices refused?: A few cuts leave a single stroke on the printed side, and one stroke is not enough to work a reflection out from. Those come back and ask for a different fold or a different picture.