# Hilo Icons

This directory contains the extension icons in various sizes.

## Required Icon Sizes

- `s16.png` - 16x16 pixels (toolbar icon)
- `icon32.png` - 32x32 pixels (toolbar icon @2x)
- `icon48.png` - 48x48 pixels (extension management page)
- `icon128.png` - 128x128 pixels (Chrome Web Store)

## Design Guidelines

- Use simple, recognizable design
- Ensure good visibility at small sizes (16x16)
- Use consistent color scheme (primary blue: #2563eb)
- Consider both light and dark backgrounds
- Export as PNG with transparent background

## Placeholder Icons

To generate placeholder icons quickly, you can:

1. Use Figma, Sketch, or Adobe Illustrator
2. Use online icon generators
3. Use AI image generators (DALL-E, Midjourney)
4. Commission a designer

## Icon Concept Ideas

- Mountain peaks (representing "high-low" = Hilo)
- Letter "H" with learning/education theme
- Book with simplification arrows
- Language learning symbols
- Gradient levels (representing A1-C1)

