Photo Collage Sizes
Before a page of photos is worth printing, the paper has to be chosen: the sheet decides how many pictures fit, how large each one ends up, and whether the result is a set of prints or one framed piece. The table below covers the paper sizes people actually print at, with the photo counts that stay readable on each.
Your photos are processed in this tab. Nothing is uploaded.
How many photos fit on each sheet
Counts assume a 3 mm margin, with rotation used only where a cell says so. A 4x6 photo is the yardstick, since it is the size most home printers and photo shops are set up for.
| Sheet | At 4x6 | At 5x7 | At 8x10 |
|---|---|---|---|
| A4 · 210 × 297 mm | 2 | 2 (rotated) | 1 |
| 4x6 · 102 × 152 mm | 1 | — | — |
| 5x7 · 127 × 178 mm | 1 | 1 | — |
| 8x10 · 203 × 254 mm | 2 (rotated) | 1 | 1 |
| 16x20 · 406 × 508 mm | 9 | 6 | 2 |
Picking a size for the job
The sheet follows the use, not the other way round.
For sending
One page at 4x6 or A4, sized to open in a message without a download.
For a frame
Match the opening, then choose a grid density that keeps each photo readable.
For a print shop
A4 or 8x10 with crop marks, at 300dpi, so the trim is unambiguous.
What the numbers mean in pixels
At 300dpi, an A4 sheet is 2480 × 3508 pixels, a 4x6 is 1200 × 1800, a 5x7 is 1500 × 2100 and an 8x10 is 2400 × 3000. A photo that is smaller than its slot will be enlarged to fill it, which is where soft prints come from: a 1200 pixel photo spread across half an A4 sheet is being asked for roughly twice the resolution it has.
The count in the table is the practical limit, not a hard one. Fewer, larger photos always read better than more, smaller ones, and a page with four pictures at 4x6 is legible at arm's length where twelve are not.