Utility conversion tools with privacy-first processing and workflow-aware quality
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Convert PNG images to multi-size ICO format for favicons and Windows application icons. Generates standard icon sizes (16×16 to 256×256px) with full transparency preservation for professional-looking icons across all platforms.
Ideal for web developers creating favicons and software developers building Windows applications. All processing happens locally in your browser for complete privacy.
PNG to ICO Converter
We generate standard Windows icon sizes: 16×16, 32×32, 48×48, 64×64, 128×128, and 256×256px. Only sizes equal to or smaller than your source PNG are included—a 64×64 PNG produces 16, 32, 48, and 64px icons.
Yes! PNG transparency is fully preserved in the ICO format. This ensures your favicon or app icon displays correctly on different backgrounds, including dark mode interfaces.
Use at least 256×256px for best results. This allows the converter to generate all icon sizes with crisp quality. Smaller source images work but will produce fewer size variants.
Downsampling is done with high-quality anti-aliasing. However, very detailed designs may lose clarity at 16×16px. For favicons, use simple, bold designs with minimal detail for best visibility at small sizes.
Yes! The ICO format is standard for Windows apps. The multi-size bundle ensures your icon looks sharp at all display scales, from taskbar (16-32px) to large tiles (256px).