PNG → ICO

Convert PNG to ICO.

Drop a PNG (or many) and we'll convert each one to ICO right here in your browser. ICO holds one or more icon sizes in a single file — the canonical favicon format for browsers that still ask for it.

Drop images here

or browse — supports PNG, JPG, WebP, GIF, SVG, ICO, TIFF

100% client-side · no uploads · no size limit

Your files never leave this page. All conversion happens in your browser — no uploads, no servers, no tracking of file contents.

About PNG

Lossless, transparency-friendly raster.

PNG is the standard for graphics that need pixel-exact fidelity and an alpha channel — logos, screenshots, UI exports.

Lossless quality
Alpha (transparency)
Universal browser support
Larger files than JPG/WebP for photos
No animation

About ICO

Windows favicon container.

ICO holds one or more icon sizes in a single file — the canonical favicon format for browsers that still ask for it.

Multi-size favicons in one file
Universal favicon support
Designed for small icons (256px max)

Why convert PNG to ICO?

Favicons live in ICO files. Browsers will fall back to ICO when other favicon hints fail, so it's still the safest bet for /favicon.ico. Different formats trade off size, fidelity, and compatibility differently. ICO is the right choice when you need windows favicon container, while PNG brings lossless, transparency-friendly raster.

See all supported formats →

Questions we get

Real answers, no upsells.

Are my images really not uploaded?

Correct. The entire conversion pipeline runs in your browser using the Canvas API and a couple of small WASM/JS libraries for less-common formats like TIFF. There's no server endpoint that accepts your image data — open DevTools and watch the Network tab if you want to verify it yourself.

Is there a file-size limit?

No hard limit. The practical ceiling is your device's available memory — modern laptops handle 100MB+ images comfortably. Mobile devices vary; if a conversion fails on a large image, try resizing it first.

Why does my SVG-to-PNG conversion not match the original at scale?

We rasterize SVGs at their intrinsic size (or 1024px if unspecified). To get a higher-resolution PNG, use Resize → By percent and bump it up before converting.

Why is my converted PNG bigger than the JPG I started with?

PNG is lossless and JPG is lossy — for photographs, JPG will always be smaller. If you want to keep file size down, target WebP instead, which gives you JPG-class compression with optional transparency.

Do you support batch conversion?

Yes. Drop in as many files as you like and hit Convert all. Download them individually, or grab the whole batch as a single ZIP.

Can I convert TO an animated GIF?

Right now we encode the first frame as a single-frame GIF. Multi-frame GIF and animated-WebP encoding is on the roadmap.