Image Merger
Join images side by side or stacked โ sizes matched, gap and background yours.
About this tool
Drop images in the order you want them, choose side-by-side or stacked, and download one PNG. โMatch sizesโ scales everything to a common height (or width) so mixed photos line up; gap and background colour are adjustable; removal chips fix mistakes without starting over.
The jobs this does daily
Before/after pairs are the classic โ renovation, haircut, weight loss, code formatting โ and side-by-side with a small gap is their natural grammar. Stacked mode reassembles long chat threads screenshotted in pieces, builds receipt trails for expense reports, and joins scanned page halves. The size-matching question is the one that matters: photos from different phones arrive at different resolutions, and gluing a 4000-pixel-tall photo to a 3000-pixel one leaves an ugly step โ matching scales them to the smaller height so edges align (turn it off when pixel-exact dimensions matter more than alignment, as with UI screenshots). Everything renders at full resolution on your device โ no watermark, no account, free forever. A grid of equal cells is the photo collage; the opposite operation โ one image cut into tiles โ is the image splitter; and the beautifier dresses the result for posting.
Frequently asked questions
How do I control the order?
Images join in the order you picked them โ the numbered chips show it, and removing a chip re-flows the rest. Re-add a file to move it to the end.
What does 'match sizes' actually do?
Scales every image to the smallest one's height (side-by-side) or width (stacked) so edges align cleanly. Off, images keep exact pixels and centre in the row or column.
Is there a limit on how many images?
No fixed cap โ memory is the only limit. Very wide merges of many 4K photos can exceed what a phone browser will canvas; a laptop goes further.
Does the output lose quality?
No โ output is PNG at the merged resolution, lossless from what was drawn. Scaling from size-matching is the only resampling that ever happens.