Merge WEBP Images Online

Two pictures often tell one story. Before and after shots sit side by side, a product is shown from several angles in a single listing image, a set of screenshots becomes one tall graphic for a store page, and a sequence of panels reads as a strip rather than a gallery. Combining them yourself in an editor means setting up a canvas, importing every file, nudging things into place and exporting; doing it in the browser means adding the images and choosing a direction.

The layout controls are deliberately small in number and large in effect. Direction puts the images in a horizontal row or a vertical column. Alignment decides how they sit against each other when the sources have different heights or widths, which is the usual reason a merged strip looks wrong. Gap runs from zero to 200 pixels: leave it at zero for a seamless continuous strip, or open it up when each picture should read as its own panel.

Background matters more than people expect. Keep the Transparent checkbox ticked and the canvas around and between the images stays transparent, which is what you want when the combined graphic will sit on a coloured page or inside a design tool. Untick it and you get a colour picker instead, so the gaps and any uneven edges can be filled with white, black or a brand colour that matches the destination.

The preview redraws as you change any of these settings, so alignment problems and awkward gaps are visible before you commit rather than after a download. The thumbnail strip shows what has been added and lets you clear everything and start again without reloading the page. At least two images are needed before a preview appears, and there is no practical cap beyond what your browser can comfortably hold in memory.

Export gives you PNG, JPEG or WEBP, with PNG selected by default. WEBP is usually the right answer for the web because a merged strip is exactly the kind of wide, detailed graphic where the size difference shows, and the quality slider appears whenever WEBP or JPEG is selected so you can trade a little fidelity for a much smaller file. Merging happens entirely in your browser, with no upload, no watermark and no account.

If the first attempt is not quite right, clear the set and add the images again in a different order; the preview makes it obvious within seconds whether a row or a column suits the material better.