IMAGE TOOL

PNG to ICO Converter

Convert PNG images to ICO format online for free. Create single or multi-size ICO favicons with transparency preserved — all processing happens in your browser.

✓ Free to use ✓ Multi-size ICO ✓ Transparency preserved ✓ Privacy-first
// PNG_TO_ICO

Convert PNG to ICO

LOCAL
↑

Drop your PNG here

or select a file from your device

PNG · JPG · WebP — will be converted to ICO
✓

ICO Ready

Source—
ICO Size—
Sizes—
Download ICO

File: favicon.ico

Free Online PNG to ICO Converter

zenlyta's PNG to ICO converter transforms PNG images into ICO files directly in your browser. ICO is the standard format for favicons and Windows icons, supporting multiple embedded sizes and transparency.

No account is required. Your image is processed locally — it never leaves your device.

How to Convert PNG to ICO

  1. Select a PNG (or JPG/WebP) image from your device.
  2. Choose which sizes to include — select multiple for a multi-size ICO.
  3. Click Convert to ICO and preview the result.
  4. Download the .ico file and use it as favicon.ico or Windows icon.

Why Multi-Size ICO?

A single ICO file can contain 16×16, 32×32, 48×48 and larger variants. Browsers and operating systems automatically pick the best size for tabs, bookmarks, taskbars, and high-DPI displays. Selecting Favicon (16,32,48) covers 99% of use cases; All Sizes is ideal for Windows apps.

Privacy-First Processing

zenlyta is designed around a client-side, privacy-first architecture. For supported local processing, the selected image is processed directly in your browser rather than being uploaded to a remote server.

Learn more on the System Architecture page and read our Privacy Policy.

Supported Formats

PNGInput — with transparency
JPG / WebPInput — auto-converted
ICOOutput — PNG-compressed

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Frequently Asked Questions

Is zenlyta's PNG to ICO converter free?

Yes. zenlyta's core browser tools are designed to be free to use without requiring an account.

Are my images uploaded?

Supported client-side image processing happens directly in your browser. The selected image does not need to be uploaded to a zenlyta file-processing server.

What sizes should I choose?

For favicons, 16×16, 32×32 and 48×48 cover most browsers and Windows. Include 64×64, 128×128 and 256×256 for high-DPI displays and Windows apps. Multi-size ICO lets the OS pick the best resolution automatically.

Does it preserve transparency?

Yes. The tool generates PNG-compressed ICO entries, which preserve alpha transparency. If you select a background color, transparency will be filled.

Can I use this on my phone?

The tool is designed to work in modern desktop and mobile browsers. Performance may vary depending on device and image size.