Image Splitter

A single wide photo can become a swipeable panorama, and one bold image can be spread across a profile grid as a giant mosaic. Printers also split large images into tiles for posters. This tool cuts any image into a grid of pieces or a row of carousel slides and gives you all of them in one download.

Two ways to split

“Grid” divides the image into rows and columns of equal pieces, from 1 to 20 each way. Use it for puzzle-style profile feeds, posters printed in parts, and image maps. “Carousel slides” cuts the image horizontally into a number of slides, made for swipeable posts where a panorama scrolls from one slide to the next.

Profile grids and posting order

Social profiles show posts in rows of three with the newest at the top left. To form one large picture, split it into three columns and as many rows as you like, then post the pieces in reverse order: the last piece first, the first piece last. The preview numbers each tile; post them from the highest number down to 1, so tile 1 ends up top left. Recent profile grids crop thumbnails to a portrait shape, so check how the tiles look once posted and leave important details away from the tile edges.

Carousel slide shapes

Carousel posts usually use one shape for all slides. 4:5 portrait slides fill the most screen space in a feed; 1:1 squares are the classic shape; 1.91:1 wide slides suit very elongated panoramas. The tool crops the height of the image to fit the chosen shape and divides the width into the number of slides. “No crop” keeps the full height, and each slide becomes a slice of the original.

Planning a panorama

A panorama that is three times as wide as it is tall fits neatly into three square slides. For portrait slides, the same panorama needs about four. Keep key subjects away from the cut lines, especially faces, so they are not split between slides. The preview shows exactly where each cut falls.

Formats and quality

JPG keeps files small for photos and is what social networks convert to anyway. PNG keeps every pixel, useful for graphics, text and printing. WebP is compact for the web. All pieces download together in a .zip, with numbered names that sort in order.

Printing large posters

Split a high-resolution image into a grid matching your paper, for example 2 × 2 A4 sheets for an A2 poster, then print each piece and join them. For PDFs and exact page tiling with overlaps, Posterize PDF prints a large page across many sheets.

Resolution matters

Each piece has only part of the original pixels. A 3000-pixel-wide photo split into three columns gives 1000-pixel tiles, enough for social networks. For printing, check that each piece still has around 300 pixels per inch at its printed size.

Privacy

Everything happens in your browser; the image is not uploaded.

Tiles for websites and games

Developers split large maps, backgrounds and hero images into tiles so they load progressively or can be shown at different zoom levels. Choose PNG for pixel-exact tiles and use a grid that divides the image evenly; the file names give each tile’s number, row and column.

Related tools

To combine images instead of splitting them, use Stitch Images or the Collage Maker. To crop before splitting, Crop Image supports common aspect ratios.