Add image border
This tool expands the canvas around the source and fills the new area with the chosen color. The complete operation runs in temporary browser memory, so the input is never uploaded or stored by LocalKit.
The input stays available if you need to adjust a setting.
How to use add image border
- 1
Add the source values or files shown in the workbench.
- 2
Choose the settings for add image border.
- 3
Run the tool, inspect the local result, then copy or download it.
A realistic example
Add a 32-pixel white frame around a square artwork for a clean gallery export. The source and generated result remain in this browser tab throughout the operation.
Supported formats and limits
Input: JPG, PNG, WebP. Output: PNG.
- The output dimensions grow by twice the selected border width.
- Available memory and browser limits still apply to very large inputs.
Questions people ask
What does add image border change?
This tool expands the canvas around the source and fills the new area with the chosen color.
Is any input sent to a server?
No. LocalKit performs this operation in your current browser tab.