Put several pictures together into one file, stacked or side by side, with as much space between them as you like.
Drop in two or more. They are joined in the order you add them.
Stacked or side by side, then set the spacing and the background colour.
You get one new picture. The originals are untouched.
The most common reason to join pictures is comparison, a before and a after, two options side by side, a set of screenshots that only makes sense together. Side by side suits a comparison; stacked suits a sequence someone will scroll through.
Images of different sizes are scaled to match on the joining edge, so nothing is stretched out of shape and nothing is enlarged past its real detail.
If you are joining photographed documents rather than pictures, the image to PDF tool is usually the better one, it keeps each page separate and produces a file people can print.
No. The work happens inside this tab, on your own machine. Open your browser's network tab while you use the tool, there is no request carrying your file.
Practical limits depend on the tool, browser and available device memory. Large files can fail even when no explicit limit is shown. Keep an original and use a smaller job if this device cannot finish it.
No, and there is no daily limit either. There is nothing to sign up for.
Images are joined in the order you add them, so add them in the order you want, or start over and re-add.
They are scaled to match on the edge being joined. Nothing is stretched or enlarged.
Choose One above the other for a tall picture or Side by side for a wide one. The space between pictures runs from 0 to 80 pixels, and the background can be white, black, off white or pink. The result is saved as a JPG, PNG or WebP named merged.
This suits before and after pairs, a set of screenshots in one image, or the pages of a document converted to pictures and joined into one long sheet.
To make the edges line up, the pictures are scaled to the smallest shared height in a row, or the smallest shared width in a column. Nothing is enlarged, but a bigger picture is shrunk to match, so it loses some resolution. Pictures of similar size give the best result.
The pictures are joined in the order you added them, so add them in the order you want them to appear. Merging draws everything onto one canvas and saves it again, so JPG and WebP results are not an exact copy of the originals.