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Convert PNG to ICO

Free PNG to ICO converter that runs in your browser. No upload, no signup, no watermark. Files never leave your device.

Conversion Successful
100% local. Your file is processed in this tab and never uploaded.

How to Convert PNG to ICO

  1. 1

    Drop your PNG file

    Drag it into the converter above, or click to browse. Nothing is uploaded.

  2. 2

    Adjust settings (optional)

    Crop, resize, rotate, or set quality from the sliders icon.

  3. 3

    Convert and download

    ICO is preselected. The file converts in this tab and downloads when done.

Why Convert PNG to ICO?

An ICO file is what browsers and Windows still reach for when they need a favicon, an app icon, or a shortcut image, and a raw PNG will not slot into any of those jobs directly. This converter wraps your PNG bytes in the ICO directory structure so the icon shows up in the browser tab and on the taskbar.

Start from a clean square PNG and the result drops straight into your project as favicon.ico.

PNG
ICO
Compression
Lossless
Type
Icon container
Transparency
Yes (alpha channel)
Transparency
Yes
Max colors
16.7 million + alpha
Typical sizes
16 / 32 / 48 / 256 px
Animation
No (APNG rare)
Animation
No
Browser support
Universal
Browser support
Universal (favicons)
Typical use
Graphics, screenshots
Typical use
Favicons, app icons

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Frequently Asked Questions

What size should my PNG be?
Square works best. A 32x32 or 48x48 PNG is the common favicon size; browsers and Windows scale the icon down as needed, so starting square keeps it from looking stretched.
Does the ICO keep transparency?
Yes. PNG alpha transparency carries into the ICO, which is what lets a favicon sit cleanly on a colored browser tab or a dark taskbar.
Can one ICO hold multiple resolutions?
The classic ICO format can, but this converter wraps a single PNG into one entry. If you need several sizes bundled, resize the source and generate the icon for the size you need.
Will browsers actually accept this as a favicon?
Yes. The output is a standard ICO, the format browsers have loaded from /favicon.ico for decades. Reference it in your HTML head or drop it at your site root.
Is this conversion free, and is my file private?
Yes. The conversion runs in your browser tab, nothing is uploaded, and no account is needed. The only limit is size: 25 MB for this format. Bigger files route to the desktop app.

Building an icon set at several sizes?

TeraConvert Desktop batch-converts a whole set of PNGs to ICO using ImageMagick, with no browser size cap.

Get TeraConvert for MacFree to download. This format unlocks with Pro.