Converting ICO to JPG extracts an icon image to a standard photo format. Useful for creating preview images of favicons, documenting icon designs, or repurposing ICO assets where JPG is expected.
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Alpha transparency is lost; JPG has no alpha channel, so transparent icon regions flatten to an opaque background. JPG adds lossy compression, which can smear the hard edges common in icons. For best quality, convert to PNG instead.
JPG is universally supported everywhere.
ICO is the Windows icon format. A single .ico file can hold multiple resolutions (16×16, 32×32, 48×48, 256×256) and color depths simultaneously, letting the OS pick the best for context. Every browser serves favicons as ICO, and Windows desktop icons use it natively.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
No. JPG has no alpha channel. Transparent icon regions become opaque against a solid background, usually white.
The largest size contained in the ICO file, typically 256×256. Smaller embedded sizes are ignored.
ICO is the Windows icon format. A single .ico file can hold multiple resolutions (16×16, 32×32, 48×48, 256×256) and color depths simultaneously, letting the OS pick the best for context. Every browser serves favicons as ICO, and Windows desktop icons use it natively.
JPG (JPEG) is a 1992 lossy photo format that became the default way to store photographs on the web. It uses a discrete cosine transform plus quantization, tuned so that errors fall where human vision is least sensitive. No transparency, no animation, but excellent for photos at 70–90% quality.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.