PNG to ICO Converter

Turn a PNG into a multi-size ICO favicon entirely in your browser — pick the sizes you need from 16 to 256px, keep transparency, and convert in bulk. Nothing is ever uploaded.

Icon sizes (px)

An ICO can hold several sizes at once. 16, 32 and 48 cover most favicon and Windows icon needs; add 256 for high-DPI.

Drop PNG images to convert to ICO

or click to choose · a square PNG works best

.png accepted

100% in your browser
No upload, no signup
Multi-size ICO
Transparency kept

Why Convert PNG to ICO?

ICO is the icon format browsers and Windows expect. A website's favicon — the little image in the browser tab, bookmarks bar and history — is traditionally a favicon.ico, and Windows uses ICO for desktop, shortcut and application icons. If your logo or mark lives as a PNG, you need to convert PNG to ICO before it can play those roles.

What makes ICO special is that one file holds several sizes at once. The browser or operating system then picks the right one for each spot — a crisp 16px in the tab, 32px for a bookmark, 48px on the desktop — instead of scaling a single image and looking fuzzy. A good favicon.ico is really a small bundle of sizes.

This tool builds that multi-size ICO in your browser in seconds. Pick the sizes you want, drop in your PNG, and it renders each size and packs them into one ICO, with transparency preserved and nothing uploaded.

What Is an ICO File?

An ICO is a container that holds one or more images at different sizes inside a single icon file. Converting PNG to ICO renders your image at each chosen size and bundles them together, so it stays sharp wherever it's shown.

Unlike a PNG, which is a single image, an ICO can store 16×16, 32×32, 48×48 and larger versions side by side. Software reads the directory inside the ICO and chooses the size that fits the context. That's why a proper favicon is an ICO rather than a lone PNG — it covers every display size in one request.

To use the result on a website, drop the file in your site root and reference it with a tag like <link rel="icon" href="/favicon.ico" sizes="any">. Modern browsers also accept PNG favicons, but an ICO remains the most universally supported choice, especially for older browsers and Windows.

How to Convert PNG to ICO in 3 Steps

There's nothing to install and no account to create. Here's how to make a multi-size ICO from a PNG in any modern browser.

Choose your sizes

Tick the sizes you want in the ICO. 16, 32 and 48 are selected by default and cover most favicons; add 64, 128 or 256 for high-DPI screens and desktop icons.

Add your PNG

Drag a PNG — ideally square — onto the box, or add several to convert in bulk. Everything stays on your device; nothing is uploaded.

Convert and download

Each PNG becomes one ICO containing all the sizes you picked. Download a single .ico, or grab a batch as a ZIP, then drop it in your site root as favicon.ico.

Pro tip: Reference it in your HTML head and you're done. Need a small PNG instead of an icon? Use our PNG to JPG tool.

Multi-Size, Transparent, Built Locally

You decide exactly which sizes go into the ICO, and the tool renders each one cleanly rather than letting the browser stretch a single image. Transparency is carried through, so a logo on a transparent background stays transparent at every size — shown against the page so you can confirm it.

Because everything runs in your browser, there's no upload, no queue and no limit on how many PNGs you convert. A non-square PNG is centered on a transparent square so it isn't distorted, though a square source always gives the cleanest icon.

PNG to ICO is ideal for:

Website favicon.ico
Windows desktop icons
App & shortcut icons
Browser extension icons
Multi-size icon bundles

Favicons & Icons on Any Platform

The same browser tool works wherever you build. Here's where the ICO goes.

§ 01

For websites

Place the ICO at your site root as favicon.ico and reference it in the head. It shows in browser tabs, bookmarks and history across every browser, old and new.

§ 02

On Windows

Use the ICO for desktop shortcuts, application icons and folder icons — Windows reads the embedded sizes and picks the right one for each view.

§ 03

In bulk

Building an icon set or several favicons? Convert many PNGs at once — there's no server, so there's no batch cap — and download them all as one ZIP.

Your Images Never Leave Your Device

Most PNG to ICO converters in the top results upload your files to a server, then promise to delete them later. This tool removes the need for that promise: your PNGs are rendered and packed into ICO files by your own browser, so nothing is ever transmitted.

Because nothing is uploaded, there's no size cap, no queue and no account to create — and the tool keeps working even if your connection drops after the page loads.

§ 01

On-device only

Conversion happens in your browser. No image is ever sent to us or anyone else.

§ 02

No limits

No file-size cap and no batch limit, because there's no server doing the work.

§ 03

Nothing stored

We can't keep what we never receive. Close the tab and every trace is gone.

Frequently Asked Questions

Is this PNG to ICO converter free?⌄

Yes — completely free with no signup, no watermark and no daily limit. Because the conversion runs in your browser instead of on our servers, there's no per-file cost to pass on to you.

Can the ICO hold multiple sizes?⌄

Yes — that's the point. Tick as many sizes as you like (16 to 256px) and they're all packed into one ICO, so the icon stays crisp wherever it's displayed.

Is transparency preserved?⌄

Yes. A transparent PNG becomes a transparent ICO at every size, so a logo on a transparent background won't get a solid box behind it.

Which sizes should I choose for a favicon?⌄

16, 32 and 48 cover almost all favicon and Windows icon needs and are selected by default. Add 64, 128 or 256 if you want extra sharpness on high-DPI screens or large desktop icons.

Does my PNG need to be square?⌄

A square PNG gives the best result because icons are square. A non-square image is scaled to fit and centered on a transparent square so it isn't stretched, but squaring it first is ideal.

Do my images get uploaded anywhere?⌄

No. Your PNG files are converted entirely on your own device. They never touch a server, which is why there are no size or count limits — and why it still works offline after the page loads.

How do I add the ICO to my website?⌄

Put the file in your site's root folder as favicon.ico and reference it in the HTML head, for example <link rel="icon" href="/favicon.ico" sizes="any">. Most browsers also pick up a favicon.ico at the root automatically.

Can I convert several PNGs at once?⌄

Yes. Add as many PNGs as you like — each becomes its own multi-size ICO — and download them all as a single ZIP. There's no batch cap because there's no server.

Ready to build your favicon?

Drop a PNG into the converter — multi-size, transparent, and private.

Back to the converter

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