One photo, a seamless tile.

The first successful use of each free tool is available without an account. If prompted to continue using it, create a free Herofab account. Files are processed in your browser and are not uploaded.

No. The file is read and processed inside your browser; nothing is sent to a server.

Near each edge, the image is joined to the part of itself that lies about half a tile away, at the offset where the pattern lines up. Within the join area the tool finds the line along which the two match best and joins the pattern there, a few pixels wide; differences in light and tone are evened out across the whole area. At the edge only the far part shows, so the left edge continues into the right and the top into the bottom; the middle of the image stays as it was.

A wider area gives the tool more room to find a line where the two parts match, which suits prints with large motifs; a narrower area keeps more of the photo untouched. If a join is still visible in the preview, choose a wider area.

It moves the former edges to the middle of the tile, where the joins are easiest to judge. The repeat is the same either way; only the point where the tile starts changes.

It removes gradual changes of light across the photo, such as a darker corner or light falling off to one side, so the repeat does not show light and dark bands. Switch it off for a fabric whose colour changes on purpose, such as an ombré.

The pixel size of your image, up to 4,096 pixels on the longer side; a larger image is reduced to that size first. For a regular stripe or check the tile is cropped by less than one repeat, so the pattern repeats a whole number of times. Both sides need at least 64 pixels.

No. The tile is made only from the pixels of your image; nothing is generated or added. A perspective that narrows to one side or a large single motif stays in the tile and shows in the repeat. A soft-edged motif on a transparent background can leave a thin edge along the join, visible on a dark background. When a regular pattern looks photographed at an angle, the tool says so.