Merge Images

You decide. "Keep original size" draws every picture at its own pixel dimensions, centres the smaller ones in the space and fills the rest with your background colour. "Shrink to match" scales the larger pictures down until the shared edge (height in a row, width in a column) is the same as the smallest picture. Nothing is ever scaled up.

PNG if any of the pictures you gave it was a PNG or a WebP, or if you asked for a transparent background. Otherwise JPEG, written at quality 92.

Yes, in the preview. Each picture in the list has arrows to move it earlier or later, and the result redraws immediately.

Not from us. The page caps the result at 16,384 pixels on a side and a hundred million pixels in total, a size every major browser can draw. If your combination would cross that line, the page scales it down to fit and tells you it did. It does not hand you an empty picture.

No. There is no server. You merge images in your browser from the files on your own disk.

Add the pictures, choose a row, a column or a grid, and set the spacing and the background colour. Then decide what happens to pictures of different sizes: keep each one at its own size and fill the gaps with the background, or scale the bigger ones down to match the smallest. The preview shows the merged image before you save it, and it downloads as a single combined file. The images are merged in your browser and never uploaded.

Choose Grid as the layout and a Pictures per row box appears. It takes 2 to 10 and starts at 3. Every cell in the grid is the size of the largest picture, or of the smallest one if you chose to shrink the larger ones to match, and each picture is centred in its cell. Spacing can be set from 0 to 400 pixels. The finished image downloads as combined.png or combined.jpg, depending on which format it was written in.