A 100 photo collage on an A3 board by default: choose the whole folder and, once the last photo is read, every one is laid out whole in justified rows across the paper. Nothing is cropped, so every photo keeps 100% — and the panel tells you how small the smallest one prints.
A worked example: 100 phone photos
A hundred 12-megapixel photographs, two-thirds landscape and a third portrait with a few squares, packed by the same engine the board runs.
A3 — 29.7 × 42 cm
13 rows
12 × 18 in poster
13 rows
| Paper | Rows | Smallest photo | Prints at |
|---|---|---|---|
| A4 — 21 × 29.7 cm | 13 | 1.4 × 1.9 cm | 5302 ppi |
| A3 — 29.7 × 42 cm | 13 | 2.0 × 2.7 cm | 3747 ppi |
| 12 × 18 in | 13 | 0.86 × 1.15 in | 3491 ppi |
What you can change
- Space between photos. A slider in the board’s unit; press Fit all again.
- The last row. Stretch it to the edge, or leave a short last row at the average height.
- The paper. A4, A3, chart paper, 12 × 18 in or any size in the Board size panel — then Fit all re-packs for it.
When another mode is better
A dozen photos or fewer, cropped to tidy cells: the collage generator. Numbered photos with file names for a client or an archive: the contact sheet maker. To check paper, DPI and every photo’s print resolution before a print shop sees it: photo collage print.
None of your photographs is uploaded: they are read, packed and exported by this browser tab.
The packing keeps your tray order; it does not sort by colour or date. A large set takes time to read and longer to export, because the export opens every original again at full size. The figures above are arithmetic for the stated photo shapes, not a speed measurement.
Asked and answered
Will 100 photos fit on A3?
Yes. On an A3 board at 300 DPI, a hundred typical phone photographs pack into 13 rows with every photo whole; the smallest comes out about 2.0 × 2.7 cm. The panel reports this for your own photos after it packs them.
How small is each photo at 100 on 12 × 18 in?
About 0.86 × 1.15 inches for the smallest, in 13 rows — small but recognisable at arm's length. Every photo still prints at far more than 300 pixels per inch at that size, so sharpness is not the limit; the size of a face is.
Why does nothing get cropped here?
Because each row is cut to the photographs' own shapes. The photos keep their order and are split into rows so the widest row is as narrow as it can be, with the row count chosen to fill the board's height. Each cell shows the whole photo, so every photo keeps 100%.
What about 200 photos?
The same method takes them; nothing refuses you. The board was designed with a couple of hundred in mind, and how it feels at that count depends on your device — the export reads every original again at full size, so it is the slowest step.
Can I change the order after packing?
Drag one photo onto another to swap them. Fit all re-packs from the tray order, so make swaps after the last re-pack — after changing the board size or the space between photos, for example.
