File Format
A specification defining how image data is structured and stored as binary, determining compression method, color depth, and metadata handling.
A file format defines how image data is structured and stored as binary. Format choice directly affects quality, file size, and supported features such as transparency, animation, and metadata.
Major image formats include JPEG for photographs, PNG for transparency support, and next-generation formats like WebP and AVIF. JPEG uses lossy compression suited for photos, PNG uses lossless compression ideal for screenshots and logos, and WebP supports both modes as a modern successor.
The image conversion tool handles format conversion entirely in the browser. For web delivery, WebP is recommended as the primary format with JPEG/PNG fallbacks via the <picture> element for incompatible browsers.