How to convert ICO to PNG

An .ico file is the Windows icon container, a format from 1985 that is still in daily use for one reason: favicons. It is a container rather than a single picture. One .ico can hold several versions of the same icon at different sizes, typically 16×16, 32×32 and 48×48 and at most 256×256, so Windows and browsers can pick whichever fits the space. It supports transparency, which is why icons sit cleanly on any background. There is a fuller breakdown on the ICO format page.

Outside of that job it is close to useless. Photo editors, design tools, chat apps, document editors and most upload forms expect an ordinary image and either refuse an .ico or show a blank square. PNG is the opposite: lossless, transparent where the icon was transparent, and readable everywhere. So whenever you need to reuse a favicon as a logo in a document, edit the artwork, upload it somewhere that rejects icons, or recover a mark from an old application icon, converting ICO to PNG is the step that turns the icon back into a normal image.

The EditItAll ICO to PNG converter does the whole job on your own machine:

1. Open the converter and drop in your .ico files, one icon or a whole folder of them. Batches are processed together.
2. Each icon is decoded right on your device and re-encoded as a PNG. PNG is lossless, so at the default setting every pixel comes out exactly as it was stored in the icon, transparent areas included.
3. Download. A single icon saves as a .png; a batch comes down as one ZIP.

Because everything runs entirely in your browser, nothing is uploaded. You can disconnect from the internet after the page loads and keep converting, which is the plainest proof the files are not going anywhere. It is free, with no account, no watermark and no limit on how many icons you convert.

Two things surprise people about the result. The first is how small it is. An icon is tiny by design: the largest image an .ico can hold is 256×256 pixels, and many favicons carry nothing bigger than 32×32 or 48×48. When a file holds several sizes, the converter reads one image out of the container and writes the PNG at that image's own pixel size, so check the width and height of the download if a particular size matters. It cannot come out larger than the biggest version the icon actually contains.

Enlarging it afterwards does not add detail. Open a 32×32 PNG in the photo editor and scale it up to a banner and you get a soft, blocky blur, because there were never more pixels to work with. If you have the original artwork, a vector file or a large PNG, convert from that instead; the icon should be the last resort, not the source. Shrinking a PNG, on the other hand, is always fine.

The second surprise is the transparency. It is kept, so the icon's see-through background stays see-through in the PNG. If you want it flattened onto a solid color, either add a filled layer beneath it in the photo editor, or run the PNG through the PNG to JPG converter, which has no transparency to keep and flattens the image onto a background.

If what you actually need is an icon, the reverse tool is just as private. The PNG to ICO converter writes a Windows icon from any PNG, keeping its transparency; anything larger than 256 pixels on a side is scaled down to fit the format's ceiling. For a logo that exists as vector art, SVG to ICO renders the mark cleanly to size rather than stretching a bitmap. The full favicon workflow, from squaring the source to naming the file, is in how to create a favicon from an image, and every other format pairing lives in the converting images guides.