Which file format is ideal for images with transparent backgrounds?

The choice of PNG as the ideal file format for images with transparent backgrounds is grounded in its support for alpha transparency. Unlike other formats, PNG retains the transparent pixels in a way that allows for smooth edges and no background color, which is essential for images that need to blend seamlessly into various backgrounds. This makes PNG a preferred option for web graphics, logos, and images where the background needs to be removed or varied.

While GIF also supports transparency, it is limited to a single color as transparent, which can result in jagged edges and a less polished appearance compared to PNG's full alpha channel transparency. JPEG, on the other hand, does not support any form of transparency, making it unsuitable for this purpose. TIFF can handle transparency but is primarily used in professional printing and lacks the versatility and smaller file sizes associated with PNG. Thus, PNG stands out as the best choice for images that require transparent backgrounds.