Photo collage maker
Build a grid collage from your photos with adjustable columns, gaps, rounded corners and a background colour. No account, no watermark, no uploads.
- Runs in your browser
- Files are never uploaded
- Free, no account
Building a grid collage
The page opens on a two-column grid with a 16 px gap and 12 px rounded corners — a layout that looks intentional straight away. From there, three controls shape the result: the number of columns, the gap, and the background colour behind the gaps. Every cell is the size of your largest photo, and each image is fitted inside its cell without cropping or distortion, so portrait and landscape shots can share a grid without anything being squashed.
Choosing the column count
| Photos | Columns | Result |
|---|---|---|
| 2 | 2 | A pair, side by side |
| 3 | 3 or 1 | A strip — wide for a banner, tall for a story |
| 4 | 2 | The classic square quad |
| 6 | 3 | Two rows of three; good for a 3:2 print |
| 9 | 3 | Square grid — the Instagram-panel look |
| 12–16 | 4 | Contact sheet; consider capping input width first |
As a general rule, take the square root of your photo count and round: four photos want two columns, nine want three, sixteen want four. Deliberately breaking that rule — one column, or one row — gives you a story strip or a banner instead.
Gaps, corners and background
- Gap. Roughly 1–2% of the collage width reads as a designed margin. Zero gap gives a seamless mosaic, which suits photos of the same subject; a large gap in white gives a Polaroid-wall feel.
- Corner rounding. 8–16 px is contemporary. It is applied per photo, so the background colour shows through at the corners — pick a background you actually want to see.
- Background. White for printing, black for a gallery look, or your brand colour for social. Switch on transparency and export PNG if the collage will be placed on an unknown background.
Order and arrangement
The grid fills row by row, left to right, in the order of the file chips above the preview. Drag the chips to rearrange. A useful trick for mixed orientations: put your one landscape photo first so it anchors the top-left cell, and let the portraits follow — the cell size is set by the largest image, so the layout stays even either way.
Collages for print
Export PNG for the sharpest result, then tag the physical size with Change Image DPI. For a 6 × 4 inch print at 300 DPI you want a 1800 × 1200 pixel collage; the pixel dimensions of your canvas are shown above the preview, so you can check before you export. If the collage comes out smaller than that, your source photos are the limit — enlarging afterwards only invents pixels.
Memory, not policy, is the only limit
There is no cap on how many photos you can add, because there is no server to protect: the canvas is built in your own browser. The practical ceiling is device memory. A sixteen-photo grid of 12-megapixel images is a canvas of roughly 200 million pixels, which is around 800 MB of RAM before encoding — fine on a desktop, likely to fail on an older phone. If your browser gives up, shrink the inputs first with Resize Image, or build the collage in two halves and merge them with Merge Images Side by Side.
Related tools
Combine Images for the plain side-by-side and stacked layouts, Add Text to Image to title the finished collage, and compress to 1 MB if it needs to fit an upload limit.
Questions
How do I choose the number of columns?
For a square-ish collage, use the square root of your photo count: four photos in 2 columns, nine in 3, sixteen in 4. For a story or banner strip, one column (or one row) with a small gap works better.
Why are some photos smaller than their grid cell?
Every cell is the size of the largest photo, and each image is fitted inside its cell without being cropped or distorted. The alignment control decides whether the spare space goes above, below or around it.
Can I print the collage?
Yes. Export as PNG for the sharpest result, then use Change Image DPI to tag it at 300 DPI so your printer lays it out at the right physical size instead of assuming 72.
Is there a limit on photo count or file size?
No. The only real ceiling is your device memory — a 20-photo collage of 12-megapixel images makes a very large canvas, so consider capping the width first if your browser struggles.