JPEG to ICO converter

JPEG is a standard digital image format that uses a type of data compression algorithm to reduce file size. This makes it ideal for web pages, email, and other online media. JPEG files are often identified by the .jpg or .jpeg file extensions. The JPEG format allows for images with millions of colors, though their resolution is usually somewhat lower than other image file types.

The JPEG standard can be adjusted to various levels, allowing the user to trade off image quality for better compression. As such, JPEG can be used in a variety of ways - from low quality display images to high-resolution photographs. JPEG also includes metadata support in the form of markers and comments that allow for photo capture data, descriptions and other information to be embedded in the image.

ICO is a graphics file format used for computer icons. It was created by Microsoft for use with Windows, and most image editors support the creation and saving of this image type. ICO files contain small images and are typically saved in either 16x16 pixel or 32x32 pixel sizes, but larger sizes are also supported.

ICO files use a specific header which contains metadata, followed by an array of bits that represent the pixels. It supports several color depths (typically 1, 4 and 8 bits per pixel) and can include optional transparency and alternative image formats. ICO files can sometimes contain multiple sizes or variations of the same icon, allowing it to be scaled to different sizes while maintaining a consistent appearance.