SashimiCut.jsx

Cut selected paths along any straight line in Adobe Illustrator — without outlining strokes. Horizontal, vertical, 45°, any angle. Multiple lines at once.

How to Use

1. Draw one or more straight lines where you want to cut (any angle)
2. Select the cutting line(s) + the target path(s)
3. Go to File > Scripts > Other Script... and choose SashimiCut.jsx
4. Done — your objects are split at the line(s)

Features

• Works on stroked paths (no need to outline/expand)
• Works on open and closed paths
• Handles bezier curves (not just straight segments)
• Preserves stroke color, width, dashes, fill, and opacity
• Cuts multiple objects at once
• Any angle — horizontal, vertical, 45°, or arbitrary
• Multiple cutting lines at once — grid-slice in one action

Requirements

• Adobe Illustrator CS6 or later (tested on CC 2019–2025)
• macOS or Windows

Installation (Optional)

To add as a permanent script in Illustrator:

1. Copy SashimiCut.jsx to:
   • Mac: /Applications/Adobe Illustrator 2025/Presets/en_US/Scripts/
   • Win: C:\Program Files\Adobe\Adobe Illustrator 2025\Presets\en_US\Scripts\
2. Restart Illustrator
3. Access from File > Scripts > SashimiCut

Keyboard Shortcut (Recommended)

Assign a shortcut so you can run SashimiCut with one key:

1. Open Window > Actions
2. Click the New Action button (folder icon first if needed)
3. Name it SashimiCut, assign a Function Key (e.g. F5), click Record
4. Go to File > Scripts > Other Script... and select SashimiCut.jsx
5. Click Stop Recording in the Actions panel

Now your workflow is:

Draw line(s) → Select all → F5 → Done

Cutting Strokes with Strokes

When both your targets and cutting lines are straight lines, put them on separate layers:

• Upper layer = cutting lines
• Lower layer = targets (strokes to be cut)

For shapes and curves, no special setup needed — just works on the same layer.

Limitations (MVP)

• Horizontal or vertical cuts only Now supports any angle!
• Does not work on compound paths (yet)
• Does not cut grouped objects (ungroup first)
• Does not cut text (convert to outlines first)

License

MIT — free to use, modify, and distribute.

Author

Hiro — https://x.com/hiro_11go