Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

Convert images to icons online for free. Create ICO files for websites and applications. Multiple icon sizes.

Drop an image here or click to browse

image/* • Max 50MB

1

Select image to convert

2

Select icon size (16, 32, 64, 128, 256, 512)

3

Generate ICO file

4

Save ICO file

ICO is the icon format used by Windows and web browsers for favicons and application icons.

Common sizes are 16px (browser), 32px (taskbar), 48px (desktop), and 256px (high DPI).

Modern browsers support PNG favicons, but ICO provides wider compatibility.

Yes, transparent PNGs convert to ICO with alpha channel preserved.