How to merge two images side by side
Drop two photos onto the page, keep the Horizontal layout, and press Merge Images. The tool places the photos next to each other with a small gap, using the tallest photo's height for the row — shorter photos are centered vertically. The result downloads as a single PNG or JPEG. This is the fastest way to make a before/after comparison, a two-photo collage for a listing, or a side-by-side screenshot pair, with no editor and no account.
Horizontal, vertical, or grid — which layout?
Horizontal suits before/after pairs and wide banners. Vertical stacks photos top to bottom — ideal for step-by-step instructions, receipts, or long screenshots. Grid arranges 3–6 photos into neat rows and columns (3 photos make one row of three, 4 make 2 × 2, 5–6 make two rows of three), each centered in its cell. The gap slider controls the spacing between photos from 0 (seamless) to 50 pixels, and the background color fills any gaps plus the letterboxing around shorter photos.
Do merged photos lose quality?
No resampling happens beyond placing the originals: each photo is drawn at its native resolution into the merged canvas, so sharpness is preserved exactly. Choose PNG output for pixel-perfect results (larger file), or JPEG at 90 quality for photos where a smaller file matters. One honest caveat: JPEG output flattens any transparency onto your chosen background color, since JPEG has no alpha channel.
Can I reorder the photos before merging?
Photos merge in the order you added them, left to right (or top to bottom). Each thumbnail in the list has a remove button, so if the order is wrong, remove the photo and re-add it — or simply re-select all files in the order you want. Keeping the drop to 2–6 photos keeps the merged image at a sensible size; very large originals produce very large merged files, so consider resizing first with the Image Resizer if the result is too heavy.