How to use PNG to ICO
- Choose or enter a supported source.
- Review controls and format limitations.
- Download the locally generated result.
PNG to ICO
Create a validated multi-size ICO from a transparent PNG.
Create a validated multi-size ICO from a transparent PNG. Processing stays on your device and the original remains unchanged.
How OpenFileTools processes it
Local processing, explicit choices.
The source is validated and processed in this browser tab. Large format codecs are loaded only on the relevant page; no image bytes are uploaded.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Sizes | User-selected 16, 24, 32, 48, 64, 128, 256 |
| Validation | ICO header and directory checked |
A real multi-resolution ICO container
Select one or more standard icon sizes. Each transparent PNG representation is resized with high-quality smoothing and written into a validated ICO directory; the file is not a renamed PNG.
- 16 through 256 pixels are available.
- All standard sizes are selected by default.
- Transparency remains in the embedded PNG images.
Questions, answered.
Can I choose only one size?
Yes. At least one size is required.