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How to print a photo collage at the right size

Open Export, tap Quality, and under Print Size pick a paper size from 4×6 Photo to Poster 18×24. It renders at exactly that size at 300dpi, centred on white, ready to send straight to a print shop. Print sizes need Pro.

3 min read · Updated 2026-09-11

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Can you print a collage made on iPhone?

Yes, though a screen-sized export sent to a print shop tends to come back soft. A collage made for Instagram is sized for a screen, not paper — the shop either stretches it blurry or crops it to fit. Print Size skips that guesswork entirely: it renders straight at the paper's own pixel size, at 300dpi, which is the number every print shop actually asks for.

How to export a collage for printing, step by step

  1. Build the collage as usual: pick a layout in Templates, fill the slots, and adjust spacing, borders and background.
  2. Tap the share icon to open Export.
  3. Tap Quality, then open Print Size and choose 4×6 Photo, 5×7 Photo, 8×10 Photo, A4 Paper, A3 Paper or Poster 18×24.
  4. Leave Format on JPEG, which every print shop accepts.
  5. Tap Save to Photos, then upload that file to a print shop or a home printer set to the matching paper size.

What pixel size is each paper option?

300dpi across the board, the standard figure for a photo print. Here's exactly what the app saves for each one:

Print sizes at 300dpi
PaperPixel sizeInches
4×6 Photo1,800 x 1,200 px6 x 4 in
5×7 Photo2,100 x 1,500 px7 x 5 in
8×10 Photo3,000 x 2,400 px10 x 8 in
A4 Paper2,480 x 3,508 px8.27 x 11.69 in
A3 Paper3,508 x 4,961 px11.69 x 16.54 in
Poster 18×245,400 x 7,200 px18 x 24 in

Why does my collage have white borders on the printed page?

Because paper has its own shape too — a 4×6 photo is wider than it is tall, A4 is taller than it is wide — and your collage layout almost never matches it exactly. The app fits the whole collage inside the paper without cropping anything, and fills what's left with white, the same look a printed card gets.

Two examples, worked out the same way the app does it:

How a collage fits on the page
Collage shapePaperCollage printed atWhite border
Square (1:1)A4 Paper (2,480 x 3,508 px)2,480 x 2,480 px514 px top and bottom
Wide 3:2 (e.g. Postcard)8×10 Photo (3,000 x 2,400 px)3,000 x 2,000 px200 px top and bottom

Where this trips people up

  • Exporting at HD or 2K and expecting a sharp poster. Those sizes were made for screens; Print Size is for anything bigger than a small print.
  • Picking PNG for printing, when JPEG is plenty for a print shop and uploads faster.
  • Assuming a print size crops to fill the page — it never does. It adds white space instead, so nothing placed in the collage ever gets cut off.

Questions and answers

Is printing a collage free?
Making the collage is free, always. The Print Size options need Pro; without it you can still print an HD or 2K export, just not at the exact 300dpi paper sizes.
What resolution do I need to print a collage?
300dpi, the number every print shop asks for, and that's exactly what each Print Size option already renders at — nothing extra to set.
Can I print an A4 or A3 collage at home?
Yes. Save the A4 Paper or A3 Paper export to Photos, open it in your printer's app or AirPrint, match the paper size, and it prints at full size with no scaling applied.
Does printing remove the white border?
No — the border is just the gap between the collage's shape and the paper's shape. Match the layout's shape to the paper (square, or 3:2 for photo prints) and the border goes away.

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