Everything you need to know about this tool and how to get the most out of it.
What is PNG to ICO Converter?
The PNG to ICO Converter transforms PNG images into ICO favicon files for websites and Windows applications. It generates multi-size ICO files containing multiple resolutions in a single file — all processing happens in your browser.
How PNG to ICO Converter Works
Upload a square PNG image (256×256 or larger recommended). Select the icon sizes you need. The tool uses HTML Canvas to resize the image to each selected size, converts pixel data to BGRA format, and constructs a valid ICO binary file structure for download.
Why Use PNG to ICO Converter?
ICO files are required for browser favicons and Windows application icons. This tool creates proper multi-size ICO files without any server upload, keeping your images private. No software installation required.
Tips & Best Practices
- 1Use a square PNG image for best results — 256×256 or 512×512 is ideal
- 2Select 16×16 and 32×32 for browser favicons
- 3Add 48×48 and 256×256 for Windows application icons
- 4Use a transparent PNG to get a transparent favicon
- 5The source image should be high quality — it will be downscaled to each size
