Convert PNG images to Windows icon ICO format for free. Ideal for creating high-quality icons with transparency.
Upload PNG Files
Select PNG files to convert to ICO
Supported formats: PNG
Paste (Ctrl/⌘+V) or drop an image — or import from a URL
PNG to ICO Features
• High-quality icon creation with transparency
• Multiple icon sizes in one file
• Perfect for favicon creation
• Desktop icon creation support
PNG is the best starting point for a favicon because its transparency layer carries over intact — Image Machine converts your PNG to a fully structured ICO file containing all the standard icon sizes, right in your browser, with no sign-up and no file upload required.
How It Works
Choose a tool
Pick from 120+ tools to resize, convert, compress, or enhance your image.
Upload & edit
Drag and drop your image and adjust the settings. It stays on your device.
Download
Save your result instantly — no watermark, no sign-up required.
Why Image Machine?
Your files never leave your device
All processing runs locally in your browser. Your images are never uploaded to a server.
Completely free
Every tool is free, with no limits, no watermarks, and no hidden costs.
Lightning fast
No upload waiting — your images are processed instantly on your own device.
Professional quality
Pixel-perfect output with full control over format, size, and quality.
Frequently Asked Questions
How do I make a favicon from a PNG file?
Upload your PNG to Image Machine's PNG-to-ICO converter, and the tool packages it into a properly formatted ICO file with the common sizes browsers and operating systems expect. Download the result and link it from your HTML head element.
Does PNG transparency carry over when converting to ICO?
Yes. ICO supports an alpha channel, so transparent and semi-transparent areas in your PNG are preserved in the output. This makes PNG the preferred source format for logos and icons that need to blend into any background color.
Why is PNG a better source than JPG for making an ICO favicon?
JPEG is a lossy format with no transparency support, so logos on a white or colored JPEG background produce blocky favicons. PNG preserves sharp edges, clean transparency, and no compression artifacts — ideal for the small pixel dimensions of an icon.
What icon sizes does a favicon ICO file need to include?
At minimum, 16×16 (browser tab) and 32×32 (taskbar) are expected. A well-built ICO also bundles 48×48 for Windows desktop shortcuts. Image Machine handles the multi-size packaging automatically from your single PNG source.
Does Image Machine upload my PNG to a server during conversion?
No — the entire conversion happens inside your browser using local processing. Your PNG never travels to any server, making it safe for confidential logos, client assets, or any image you prefer to keep private.