Mockup Automator suite › Split 3 Automator
Split 3 Automator
Splits one whole image into a three-panel triptych, ready to print and hang. It scales the artwork to your panel size, cuts it into three, adds a wrapped canvas edge or a white border if you want one, and exports all three. No guide maths, no manual slicing.
First 10 exports free on the direct download, full plugin, no card required. Adobe Exchange copies are full price from install.
How do you split an image into three panels in Photoshop?
Scale the artwork to the finished triptych size, cut it into three equal panels, and export each one numbered left to right. Doing it by hand means guides and crops per image; a batch plugin does a whole folder in one run.
- Pick the folder holding your whole images.
- Pick an output folder for the panels.
- Choose the size of each individual panel.
- Optionally add a mirrored gallery-wrap edge or white border, then Run.
How Split 3 Automator works
$10 / month · $50 / year
Split 3 Automator
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Panel size five presets and custom
60 × 90, 75 × 100, true A1, 60 × 60 square and 60 × 75 cm, or type your own. The size is the finished panel you hang.
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Tells you the crop it needs
The panel works out the visible face after any edge treatment and shows the source ratio it wants — live, as you change the settings. Crop to that yourself and you keep control of the composition instead of letting it centre-crop for you.
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Edge treatment pick one or neither
A mirrored gallery-wrap edge for stretched canvas at a depth you set in millimetres, or a white border for paper prints, or a flush crop with neither. Both are off by default.
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Gap
Set the gap you intend to hang at and that much image is taken out between panels, so the picture still reads across the wall. Leave it at zero for three continuous slices.
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Numbered for hanging
Panels export as
name-1,name-2andname-3, left to right, which is the only thing that stops a triptych being a puzzle at the framers.
Four steps, start to finish
Point the plugin at the folder your images are in, point it at where you want the panels, pick a panel size, and hit Run. The mirrored edge and white border are optional switches on the way past.


The same three buttons as every plugin in the suite
Learn one and you have learned the rest. Split 3 Automator is a single panel in Photoshop with folder pickers at the top, settings in the middle, and Scan, Run and Stop at the bottom — runs locally in your own copy of Photoshop, and can skip files already sitting in the output folder.
Who sells triptychs?
Three-panel wall art is a staple of the print trade, and the splitting is the part nobody enjoys. Cutting one image into three print-ready panels by hand means guides, crops and careful naming, repeated for every piece in the range.
Wall art sellers
Triptychs command a higher price than a single panel and suit wide landscape work particularly well.
Canvas print suppliers
Customer artwork arrives whole and has to be split to the panel sizes the stretcher bars come in.
Interior and décor sellers
Large living-room pieces are usually sold as multi-panel sets rather than one big canvas.
Photographers with panoramic work
A wide coastal or city frame reads better across three panels than squeezed into one.
The rest of the suite
Each plugin is its own subscription, or take all five on the Suite for $30 a month.