Build a reference with equal cells
A square grid on a photo is useful when you plan to rule squares on drawing paper. Each full cell has equal width and height, so its corners provide a consistent frame for comparing angles and distances. This page begins with eight columns and Square cells enabled. Upload a photo to see the resulting row count.
In this mode, the photo width divided by the column count determines the side length of a square. Rows are then calculated to cover the photo height. You do not choose an independent row count while Square cells is active, because doing so could turn the squares into rectangles.
The last row may be partial at the photo edge. For example, a reference may end halfway through the bottom row rather than at a full square boundary. The tool keeps that remaining strip of the image; it does not stretch the image or crop away the strip to force a neat rectangle of full cells.
Match the paper to the photo edge
On paper, mark out the same number of columns using any convenient square size. Count the complete rows in the reference and allow the same fraction of a square for the final partial row. This keeps the full composition in proportion when enlarging a reference.
Use numbered labels to keep track of your position, especially near the bottom strip. If eight columns feel too dense for a simple object, reduce the count. If you prefer a specific source-pixel spacing, switch to Cell size mode; that mode can leave partial cells on both edges.
This square grid photo tool makes an overlay for drawing. It does not combine several images into a collage or prepare a social-media tile layout. Once the lines are readable, download a PNG of the single photo with the grid. Your original photo stays on your device while you adjust the reference.
Frequently asked questions
Does Square cells crop my photo?
No. It preserves the photo and keeps a partial final row when the height is not an exact multiple of the cell size.
Why can I not edit Rows?
Columns determine square cell size, so the row count is calculated automatically in this mode.
Is this a square photo collage maker?
No. It adds drawing guide lines to one photo; it does not arrange multiple photos into a collage.