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Image to ICO

Turn one image (PNG, JPG, WebP, or GIF) into a hand-built 32-bit Windows ICO — 6 sizes (16, 32, 48, 64, 128, 256) packed by default, or a single size (default 32). Center square-crop on, or fit with transparent/color background; alpha under 128 becomes transparent. Saves as <name>.ico. Photos never leave your device — processing runs locally in your browser with Canvas and WebAssembly.

Runs on Canvas

100% Local Browser Native

How to Use the Image to ICO

1. Drop one image

PNG, JPG, WebP, or GIF source — square art crops cleanest.

2. Set ICO options

Multi-size 16–256 on (recommended) or pick one size; square center-crop on, or fit with transparent/color fill. No quality slider exists.

3. Download ICO

Ready panel lists packed sizes; saves as <name>.ico.

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Frequently Asked Questions

What sizes come out?

16, 32, 48, 64, 128, and 256px — all six packed into one ICO by default (256 stored as 0 per spec), or a single size with multi off. Tabs use 16–48; app icons use the top end.

Which source works best?

Square PNGs with clear subjects — center-crop is on by default. Transparency survives: pixels under 128 alpha land in the ICO AND mask; non-crop fit offers a transparent or solid background.

Where do I install it?

Link with rel="icon" in HTML head; browsers pick it up automatically.

Is my work uploaded anywhere when using Image to ICO?

No — the ICO is hand-assembled locally in your browser (32-bit BMP entries + mask); unlimited saves on local tools.

Last updated October 2026