How do I split an image for X?

Load the image at the top of this page, choose columns or rows and how many parts, then download the set. The files are numbered in posting order; attach them to a post starting with part 1. Everything runs in your browser.

Is my image uploaded?

No. The page is static and the tool runs in your browser. Decoding, cutting, encoding and zipping happen on your machine. The only network traffic is the page itself and usage events that carry settings such as axis, part count and image dimensions, never the image.

Why is there a gap between my images?

The place you post them draws it, whatever the files contain, and a line that crosses a cut lands 4 px short on the other side. The Seam setting compensates: it removes a strip of the source at each cut, as wide as that gap will be in source pixels, so the line meets again.

What does the seam setting remove?

A strip of the source at every internal cut, as wide as the gap will be once the set is rendered: gap × source width ÷ rendered width, rounded to whole pixels. A 1600 px wide image shown in a 566 px column loses 11 px at each cut. The tool reports the total it discards, and the setting is off by default.

Can I split into more than four parts?

You can cut up to 10 parts here, but a post on X holds at most 4 images. Five or more parts need more than one post, or another destination.

What size should the parts be?

Keep each part under 5.0 MB and under 8192 px on its longest side, the limits published for X in 2026. Beyond that, the parts are as large as the source allows; the tool cuts, it never scales up. The readout shows every part's pixel size, and the export bar shows the file sizes before you download.

Does it work for long screenshots?

Yes. Choose rows and the tool cuts horizontal bands in reading order, numbered top to bottom. Fewer, taller bands read better than many short ones.

Which format should I pick?

PNG keeps every pixel and keeps transparency. JPEG and WebP are smaller and let you set the quality. For photographs, JPEG at the default quality is the safe choice. For small type, post one test set and look at it before you publish.

Image splitter for X

Split one image into 2 to 10 parts, named in posting order for X (formerly Twitter). The tool shows where the cuts fall, what each part measures, and how the set reads once the parts stand apart. It runs in the browser. Nothing is uploaded and nothing is installed.

1600 × 900/2 parts/4 px gap, to scale

The sample, whole. Press Split it to cut it, or drop your own image on it.

Open the editor

Drop an image here, paste one, or choose a file. Nothing is uploaded. The image stays in this browser.

What the tool does

Equal parts, to the pixel: Every part is the same size, and the pixels left over are shared between them rather than trimmed off an edge. The readout gives each part its own measurements.
Nothing leaves your device: No upload, no account, no server. Your browser decodes the image, cuts it, encodes the parts and writes the archive.
The gap, closed: Turn on Seam and the tool drops a strip as wide as the 4 px gap at every cut, so a line that crosses a cut still meets on the other side.
File sizes before you download: Every change is re-encoded in the background, so each part's size is a number you can read rather than a surprise in your downloads folder.
One archive, in posting order: The set arrives as a single zip, named after your image, numbered so you attach the parts in the order they were cut.
Drop, paste or choose: All three work, anywhere on the page. A photo from a phone keeps the way up it was taken.
The settings are in the link: Axis, parts, seam and format live in the URL, so a set-up that works can be bookmarked or sent to someone else.

How to post a split image

Load the image
Drop it on the page, paste it, or choose a file. It is decoded in your browser and never sent anywhere.
Choose the axis and the number of parts
Columns cut a wide image side by side; rows cut a tall image into bands. The tool proposes the axis from the image's shape, and you can override it.
Check the split
The parts stand apart at the gap they will be posted with, drawn to scale, so you see the seams before anyone else does. Each part carries its own measurements.
Turn on Seam if a line crosses a cut
It trims a strip from the source at each cut, as wide as the gap, so the line still meets across it. The readout says how many pixels it removes.
Download the set
All parts in one archive, or one part at a time. Files are numbered in posting order.
Attach them to a post in numerical order
Part 1 first, so the set reads in the order it was cut.

Questions

Your next post is one drop away.

No sign-up, no watermark, no upload. Open the editor and cut.

Open the editor