Can I convert PNG to ICO on iPhone, Android, Mac or Windows?

Yes. ConvertPixels works in Safari, Chrome, Edge and Firefox on any device, so you can convert PNG to ICO on your phone or computer without installing an app.

Is there a free PNG to ICO converter with no sign-up?

Yes, this one. Converting PNG to ICO on ConvertPixels is free, with no sign-up, no watermark and no daily cap. Convert up to 30 files per batch, each up to 50 MB.

Can I convert PNG to ICO without losing quality?

Yes. ICO is a lossless format, so your converted file is pixel-for-pixel the same as the PNG. (It can't add back detail the original never had.)

Will the transparent background survive converting PNG to ICO?

Yes. Transparency is supported in both formats and is preserved exactly.

Can I batch convert PNG to ICO?

Yes. Add up to 30 PNG files and convert them in one batch. You can even choose a different output format for individual files, then download them separately or together as a ZIP.

Is it safe to upload PNG files to ConvertPixels?

Yes. Uploads use an encrypted connection and are processed automatically - nobody views them. Your originals are deleted straight after conversion and the results within an hour, or instantly if you click "Delete from server now".

Convert

PNG to ICO Converter

Convert PNG images to ICO online in seconds - free, with no sign-up and no watermark. Batch convert up to 30 files and download them together as a ZIP.

Free
No sign-up
No watermark
Private by design

Choose filesor drag and drop files hereUp to 30 files · 50 MB each

Image Converter

How to use it

1
Drop your PNG files onto the converter
2
Press Convert to turn them into ICO
3
Download your ICO images one by one or as a ZIP

PNG to ICO

Why convert PNG to ICO?

PNG and ICO are both lossless formats. ICO is the usual choice for website favicons and Windows icons.

Transparent areas stay transparent

PNG and ICO both handle transparency, so anything see-through in the original is still see-through after conversion.

Create a favicon or app icon

ICO is the icon format every browser and Windows understands. Convert a square PNG to get a favicon for your site or an icon for a desktop shortcut.

PNG vs ICO: what's the difference?

Property	PNG	ICO
Compression type	Lossless (exact pixels, larger files)	Lossless (exact pixels, larger files)
Transparent background	Yes	Yes
Animation	No	No
Where it opens	All browsers and devices	All browsers as a site icon
Used for	Logos, screenshots, graphics, images with text or transparency	Website favicons and Windows icons

What is a PNG file?

PNG (Portable Network Graphics) is a lossless image format created in 1996 as a patent-free replacement for GIF. It stores every pixel exactly, so text, logos and sharp edges stay perfectly crisp however often you save the file.

PNG supports full transparency, which makes it the standard format for logos, icons, screenshots and graphics placed on top of other designs. For photos, though, PNG files are several times larger than JPG.

How to open a PNG file

PNG opens everywhere: Windows Photos, Mac Preview, iPhone and Android galleries and every web browser. Editors like Photoshop, GIMP, Figma and Canva keep the transparency intact.

Extension: .png
Compression: Lossless
Transparency: Yes
Best for: Logos, screenshots, graphics, text

What is an ICO file?

ICO is the icon format of Microsoft Windows and the classic format for website favicons - the little image in a browser tab. One ICO file can hold several sizes (16 × 16, 32 × 32, 48 × 48 and more), so the icon looks sharp everywhere.

ICO supports transparency, so icons can have rounded or irregular shapes. Modern sites often add PNG and SVG favicons too, but favicon.ico is still the universal fallback.

How to open an ICO file

Windows shows ICO files in File Explorer and opens them in Photos; Mac Preview opens them too. GIMP and online editors can edit them. To make one, convert a square PNG - or use the Favicon Generator for a complete set.

Extension: .ico
Sizes: Several in one file (16-256 px)
Transparency: Yes
Best for: Favicons, Windows icons