ICO to PNG Converter

ICO is a container format used by Windows for application icons and browser favicons. Unlike most image formats, an ICO file can hold multiple images at different resolutions inside a single file — 16×16, 32×32, 48×48, 256×256 — so the operating system picks the appropriate size for each display context: the taskbar renders the 32×32 frame, the desktop shortcut uses 48×48, and the high-DPI app switcher picks the 256×256 frame. Converting ICO to PNG extracts the image data and saves it as a flat PNG file that works in any design tool, image editor, or web delivery context without Windows-specific codec support. Design applications including Figma, Sketch, Affinity Photo, and older versions of Photoshop do not import ICO as a native format. PNG is the format every tool in a modern design workflow accepts.

The AT USE ICO to PNG Converter processes files server-side using ImageMagick. Upload an ICO file up to 20 MB and download a PNG. Both files are deleted from the server after download. No account required.

Which frame gets extracted

ICO files that contain multiple frames at different resolutions — for example, a favicon.ico with 16×16, 32×32, and 256×256 versions packed inside one file — produce a PNG at the largest resolution available in the container. A favicon.ico that holds a 256×256 frame alongside smaller sizes produces a 256×256 PNG output. Single-frame ICO files — those containing only one resolution — produce a PNG at that one resolution. The extracted frame is encoded as lossless PNG, preserving every pixel from the ICO exactly as it appears at that resolution.

Transparency and color depth

Modern ICO files store 32-bit RGBA images with per-pixel alpha. These produce a PNG with a full alpha channel — transparent pixels in the ICO remain transparent in the PNG. Older ICO files from Windows 95 and 98-era software use a 1-bit XOR transparency mask: each pixel is either fully transparent or fully opaque. ImageMagick converts the binary mask to a binary alpha channel in the PNG output. ICO files using 4-bit (16 colors) or 8-bit (256 colors) indexed color modes convert to their PNG equivalent with the same color palette. All color-depth variants produce correct output.

ICO files with internal PNG compression

Windows Vista introduced ICO files that store frames using PNG compression inside the ICO container, rather than the older BMP-based encoding. This is the standard in modern Windows application icons and browser favicon.ico files built with current tooling. When an ICO frame uses internal PNG compression, ImageMagick reads the embedded PNG data directly and extracts it as the output file. The result is a standard PNG at the frame's original resolution, exactly as the icon designer produced it.