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Frame It with Border Image Generator

The **Border Image Generator** demystifies one of the most confusing properties in CSS 3: `border-image`. This property allows you to use an image file to effectively "paint" the border of a box, stripping away the standard solid or dashed lines in favor of custom graphics, gradients, or pixel art.

Understanding 9-Slice Scaling

The core concept is the "9-slice scaling" grid. The image is divided into 9 regions: 4 corners, 4 edges, and a center. This tool helps you define the slice offsets so that:

  • Corners remain unscaled (preserving detail like rounded edges).
  • Edges can stretch or repeat (tile) to fill the variable width/height.
  • Center is optionally filled or discarded (transparent).

Use Cases

This aesthetic is seeing a resurgence with:

  • Retro/Pixel Art: Perfect for game UI or 8-bit themes.
  • Decorative Frames: Vintage photo frames or ornate certificate borders.
  • Gradient Borders: Using a gradient image source to create rainbow borders.

How to Use

  1. Upload an image or use a preset.
  2. Adjust the 'Slice' lines to define the corners.
  3. Choose 'Stretch' or 'Repeat' for the edges.
  4. Copy the CSS.

Technical & Privacy Note

Local slicing. The **Border Image Generator** from **Online Tool Base** processes images in your browser.