Merge Images
Combine several images into one - side by side, stacked or in a grid, with optional spacing and a background colour. No upload, no signup, all in your
Drop your image file here
or click to browse files
Merging is a layout problem rather than a compression one: the output canvas is sized to fit every image, so the result is as sharp as the sources and nothing is resampled beyond the proportional scaling each layout requires. Side by side matches the tallest image and scales the others to that height; stacked matches the widest and scales to that width; the grid gives every cell the same dimensions and centres each image inside it without distortion.
The order of the images follows the file list, so arrange them before converting - the first file ends up top left. Spacing and a background colour matter as soon as the images have different aspect ratios, because without them the outer edges look ragged. A transparent background only works in PNG and WebP; JPEG cannot store transparency, so it fills those areas with the background colour instead.
How to combine images into one picture
Drop two or more images onto the page in the order you want them, or click to browse. Drag-and-drop order is the merge order.
Choose side by side, stacked or a grid, set the spacing and background, and pick the output format.
Convert and download the single merged image.
FAQ
Can I control the order of the images?
Yes - the images are combined in the order they appear in the file list, and the first one lands top left. If the order is wrong, clear the list and add the files again in the sequence you want.
Does merging reduce the image quality?
No. Each image is drawn once at a proportionally scaled size, so nothing is compressed until the final save. Choose PNG or WebP to keep the result lossless; choosing JPEG at 90% or above costs very little.
What happens if the images have different sizes?
Each layout scales them consistently: side by side matches the tallest image, stacked matches the widest, and the grid fits every image inside an equal-sized cell without distortion. The result is as large as the layout needs, so mixing a phone photo with a small icon produces a big canvas.
Can I add captions or borders between the images?
Not with this tool - there is no text layer. It does offer spacing between images and a background colour or transparency, which covers most of what a thin separator band is used for.
Which format should I export as?
PNG if you need transparency or a lossless result, WebP for a smaller file that still supports transparency, and JPEG when a small file matters more and a solid background is fine - JPEG cannot store transparency, so any transparent area becomes the background colour.
Is there a limit to how many images I can merge?
No fixed limit, but the merged canvas is capped at roughly 24 megapixels and 6000 pixels per side, which is what browsers handle reliably. Beyond that the whole result is scaled down proportionally rather than failing.
At a glance
| Input | image |
|---|---|
| Multiple files | Yes |
| Where it runs | In your browser - files are never uploaded |
| Works offline | Yes — once the page has loaded |
| Price | Free, no sign-up, no watermark |
Choosing between JPG, PNG, WebP and AVIF
These formats solve different problems, and picking the wrong one costs you either quality or file size. JPG is the safest choice for photographs and for anything you need to send to someone else, because every device and program opens it - but it is lossy and has no transparency. PNG is lossless and supports transparency, which makes it right for logos, screenshots, diagrams and anything with sharp edges or text, at the cost of a much larger file. WebP typically beats JPG by 25-35% at the same visible quality and supports transparency, but a few older programs still cannot open it. AVIF compresses even further, especially at low quality settings, but encoding is slower and support is the newest of the four. A practical rule: JPG to send, PNG to edit, WebP for your own website, AVIF when every kilobyte counts and you have checked that your audience can open it.
How much quality you actually lose
Lossy compression throws away detail your eye is least likely to notice - first fine texture, then edges. In practice most photographs look identical to the original down to roughly 75-80% quality, and differences only become obvious around faces, hair, foliage, fabric patterns and text. That is why a portrait and a screenshot need different settings: a face at 60% shows blotchy skin where a landscape at 60% still looks fine. Resizing matters more than quality for perceived sharpness: halving the pixel dimensions usually saves far more than dropping quality from 90 to 60, and the result looks better. If you need a specific file size, reduce dimensions first, then quality, and stop as soon as you hit the target rather than going lower than necessary.