Grid Copy Drawing Generator

What this generator does

Builds a picture square by square, prints it beside an empty grid of the right size for the copy asked for, and gives a key naming every colour used. The key uses a letter as well as a colour, so the sheet still works printed in black and white — a child writes the letter in each square instead of filling it.

How to use this tool

1. Choose the grid size, how many colours, and whether the copy is the same size, twice the size or half.
2. Make the sheet and print it, or copy the grids as text.
3. Copy the picture square by square into the empty grid, using the key.
4. Show the answer to check, and copy the link if a whole class needs the same sheet.

Understanding the controls

Squares across

Eight to twenty. A bigger grid is a longer task rather than a harder one; the colours and the copying scale are what change the difficulty.

Colours

Two to six. More colours means more to keep track of while copying.

Copy it at

The same size, twice the size, or half. Half is only produced from a picture that can be halved without losing anything, which is why the picture changes shape when you choose it.

Make the picture symmetrical

Builds one half and reflects it, so the two halves match exactly. On a grid with an odd number of squares the middle column is its own reflection, which is what a mirror line means.

Repeat word

The word this sheet was built from. Anyone opening the same link gets the same sheet.

Common use cases

• A first lesson on scale, where enlarging is something you do rather than something you are told
• Fine-motor and careful-looking practice that ends in a finished picture
• A printable early-finisher or cover-lesson task
• Pixel-art practice with a colour key, which works in black and white as letters
• Handing a class the identical sheet from a single link

How this generator works

The claims are checked on the two finished grids rather than recorded as they were made. For an enlargement every square of the answer is worked out again from the picture by position, which is what makes the enlargement exact rather than approximate. For a reduction every block of four squares in the picture is confirmed to be a single colour, so nothing is lost in the halving. Squares and array positions are whole numbers throughout, so a square either matches or it does not and there is nothing to round.

Randomness and fairness

The sheet is built from a repeat word taken from your browser’s secure generator unless you type one of your own, so the same link gives a whole class the same sheet. A repeat word exists to make a sheet reproducible; it is not a security measure, and nothing here is suitable for anything that needs to stay secret.

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

Limitations and good to know

• The pictures are generated shape by shape and are not drawings of anything in particular. Nothing here is copied from anybody else’s artwork, and no character or logo belonging to anyone appears.
• Colours are laid on in bands across the picture rather than following the shape, so a picture reads as an area of colour rather than as an object with parts.
• Choosing half the size changes the picture, because only a picture built from blocks of four can be halved without losing something.
• An odd number of squares across is rounded up to an even one when the copy is at half size.
• The answer sits on the same page. On a shared screen it has to be hidden rather than absent.

Privacy and your data

Both grids and the key are worked out in your browser, and no picture, choice or colour leaves the page. The repeat word is a short label this page minted or you typed; it is the only thing written into the address, and it is never measured.