How do I give collage photos rounded corners with white gaps between them?
Set the “Background color” to white, give the “Gap between images (px)” and “Outer margin (px)” a value, then type a number in “Corner radius (px)”. Each cell gets rounded corners with white showing behind them. The radius never exceeds half the shorter side of a cell, so a huge value turns square cells into circles.
The settings, step by step
- Add and order your photos in the Image collage maker maker, then pick “Grid” and a column count.
- Open “Background color” and choose white, which is already the default.
- Type 20 for the gap and 20 for the margin, so the spacing between and around the photos matches.
- Type a small value in “Corner radius (px)”, such as 24 or 40, and watch the preview.
- Leave the fit on “Crop to fill” so each photo reaches the corners of its cell, where the rounding shows.
4 photos in 2 columns, a 1080 width, a 20 gap, a 20 margin, a 1:1 cell shape and a radius of 40.
The output is 1080 × 1080 and each cell is 510 × 510 with 40 px rounded corners. Type 1000 as the radius and the tool stops at 255, half of 510, turning every photo into a full circle.
The radius limit and what happens at it
The field accepts up to 2000 px, but when drawing the tool caps the radius at half the shorter side of each cell. In a square cell that means a circle. In a rectangular cell the photo becomes a capsule with two round ends: with a 4:3 shape and the same settings the cells are 510 × 383, and the maximum radius is 191 px.
Circles suit portraits or close-ups with the subject in the middle, but they cut all four corners off every photo. For product shots that should stay whole, a radius of 16 to 48 on a cell around 500 px gives a soft look without eating into the product.
Why can't I see the rounding on some photos?
The rounding is clipped to the cell, not to the photo. In “Contain whole image” a photo can be smaller than its cell, so its corners sit away from the cell corners and are never clipped. They look sharp, surrounded by a rounded white area you cannot see because it matches the background. If you want visible rounded corners on every photo, use “Crop to fill”, or choose a cell shape close to the shape of your photos.
Details that give a clean look
- One radius applies to every cell and all four corners; you cannot round a single corner.
- The gap, the margin and the corners all take the same background color. White gives a separate card look; a dark color looks like photo frames.
- With a transparent background in PNG or WebP the corners are truly transparent and blend with whatever page shows the image. JPEG has no transparency.
- With a gap of 0 and a radius, small background-colored gaps appear where four photos meet, a look you may or may not like.
Common questions
Does the tool add a colored border around each photo?
No, there are no separate borders. What looks like a frame is the gap and margin in the background color.
Does rounding work in the featured layout?
Yes, it applies to the large and the small cells, each capped at half its own shorter side, so the small cells can be circles while the big one is still a rounded rectangle.
Does the rounding in the preview match the file?
The preview is a reduced copy of the same shapes, and the file is drawn at full size with the values you entered.