Split an Image Vertically

Splitting vertically means cutting with vertical lines, so the pieces come out side by side: a left panel and a right panel. The splitter above starts at two columns. Raise the count for more panels, drag any seam to move it, and download the panels as a ZIP.

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Your image never leaves your device. Splitting runs in your browser with the Canvas API.

A vertical split cuts down the picture, so the pieces sit side by side and each one keeps the full height. Choose how many strips you want and the cuts spread evenly across the image. For cuts that run the other way, use the horizontal splitter.

Two strips, one cut down
Three strips, two cuts down

What you get from a 4000 × 3000 photo

Computed by the splitter library at build time
2 strips2000 × 3000 px
3 strips1333 × 3000 px, last piece 1334 × 3000 px
4 strips1000 × 3000 px

A vertical split uses vertical cut lines. They run top to bottom through the picture, and the pieces sit side by side. Every panel keeps the full height of the source and takes a share of its width.

The phrase confuses people because it can be read either way, so it is worth being blunt about it. Vertical lines, horizontal arrangement. If you want stacked pieces cut by lines that run left to right, that is the horizontal splitter.

Columns go from 2 up to 20. A 3000 × 1000 panorama into three columns gives three 1000 × 1000 px panels. The same panorama into five gives five 600 × 1000 px panels, narrow enough that a carousel is really the only place they work.

Seams are draggable, which matters more on vertical cuts than most people expect. Faces, doorways and vertical lines in architecture all sit where an even split wants to cut. Move a seam a few percent and the panels usually improve. The preview shows all the panels at once so you can balance them in one pass.

The rows axis is locked at one so this stays a pure vertical cut. Everything runs on a canvas in your browser, so nothing is uploaded and there is no queue, no watermark and no limit on how many images you split.

What this split is used for

Panorama into carousel panels

A panorama posted whole shrinks to a sliver. Cut vertically into panels and post them as a carousel, and the picture fills the screen as people swipe. Pad each panel to 4:5 first so every slide shares an aspect ratio, which is what the platform needs before it starts cropping.

Triptych and multi-panel prints

Two, three or five vertical panels hung with gaps between them is a standard way to print a wide photograph. A vertical split gives every panel the same width so the frames match. Move the seams so the composition carries across the gaps rather than being cut at a subject.

Comic strip and sequence panels

Strips laid out as one flat file need cutting back into panels for reposting or archiving. Vertical cuts do it in one pass. Drag each seam into the gutter between panels rather than accepting equal columns, since hand-laid strips almost never divide at even fractions.

Split a wide chart or timeline

Timelines, Gantt charts and wide tables are wider than any screen they end up on. Cutting into vertical panels lets each part be shown at a readable size in a deck or a document. Export as PNG so labels and gridlines stay sharp instead of softening into JPG artefacts.

Tips

  • A vertical split uses vertical cut lines, so the panels sit side by side rather than stacked.
  • Every panel keeps the full source height, so the source aspect ratio decides how narrow they get.
  • Drag the seams away from faces and strong vertical lines before exporting.
  • Pad panels to 4:5 when they are going into a carousel so all the slides match.
  • Panels are numbered left to right, which is also the order to post them in.

Frequently asked questions

What does splitting an image vertically mean?

It means cutting with vertical lines that run top to bottom, producing pieces that sit side by side. Each panel keeps the full height of the source. The opposite operation, cutting with horizontal lines to get stacked strips, is a horizontal split.

How do I split an image into vertical panels?

Drop your image into the splitter above and set the number of columns. Two gives a left and a right panel. Higher counts give more, up to 20. Drag any seam to move it, choose an output format, then download the panels separately or as a single ZIP.

Is a vertical split the same as splitting in half?

Splitting in half is a vertical split with two columns, which is where this preset starts. The difference is the count. A vertical split can produce any number of panels from 2 to 20, while splitting in half is specifically the two-piece case with a single cut line.

How wide is each panel?

The source width divided by the number of columns, at full source height. A 3000 pixel wide image into three columns gives three 1000 pixel panels. When the width does not divide evenly, the last panel takes the leftover pixel so nothing is dropped or duplicated.

Can I move the seams between panels?

Yes. Every seam is draggable and the panels either side resize live in the preview. Use it to keep a face or a doorway out of a cut, or to line the seams up with gutters in laid-out artwork. Reset to equal restores even columns.

Can I split vertically for an Instagram carousel?

Yes, and that is one of the most common uses. Cut the width into as many panels as you want slides, up to 20, then pad each one to 1080 × 1350 px so all the slides share one aspect ratio. Post them left to right.