Best Photo Collage Sizes for Every Platform
A practical reference for photo collage sizes and aspect ratios — the right dimensions for Instagram, Pinterest, YouTube, stories, screens and print.
The best collage size depends entirely on where it will live. This guide maps the most useful aspect ratios to each social platform, to screens and to common print orientations, so you can choose the correct canvas before you start arranging photos.
Why the canvas ratio matters
Aspect ratio is the single most important sizing decision. Pick it before you arrange anything, because a collage built for a square will crop awkwardly if you later force it into a tall story frame. Decide the destination first and build to fit.
The good news: a handful of ratios cover almost every use, and any layout in a good collage maker can be paired with any of them.
Print sizes and resolution
For print, work to standard paper. Much of the world uses the A-series (A4, A3); North America uses Letter (8.5×11). Choose portrait or landscape to match your composition, and leave a small margin if your printer trims the edges.
Shape is only half the story — resolution is the other half. Start from high-resolution source photos and export at a large output size, up to 3600 pixels on the long edge, so the print stays crisp. View the export at 100% before printing to confirm faces and fine details hold up.
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Frequently asked questions
What is the best size for a photo collage?
It depends on the destination: 1:1 or 4:5 for Instagram, 9:16 for stories, 2:3 for Pinterest, 16:9 for widescreen, and A4 or Letter for print.
What resolution should I export for print?
Export as large as your source photos allow — up to 3600 pixels on the long edge — and always start from high-resolution originals for a sharp print.
Is CollagePro free to use?
Yes. CollagePro is completely free with no subscription, trial limit or hidden export fee. You can create, edit and download as many collages as you like.
Is CollagePro free to use?
Yes. CollagePro is completely free with no subscription, trial limit or hidden export fee. You can create, edit and download as many collages as you like.
Are my photos uploaded to a server?
No. The editor decodes and renders your photos inside the current browser tab. Image pixels, filenames and EXIF data are never sent to CollagePro.
Will my collage have a watermark?
No. Every PNG, JPEG and WebP download is clean, with no CollagePro branding placed on the image.
Can I make this collage on my phone?
Yes. The editor is touch-friendly and runs in mobile browsers, so you can add, reorder, crop and export photos on a phone or tablet.
Social and screen sizes
For the Instagram feed, use 1:1 (square) for classic grids or 4:5 (portrait) to take up more vertical space and stop the scroll. Stories and reels use 9:16, Pinterest favours a tall 2:3 pin, and YouTube thumbnails and widescreen displays use 16:9.
As a rule, taller formats claim more attention on a phone, while widescreen suits anything viewed on a monitor or TV.