lossy

/ˈlɔsi/
adjective
  1. Relating to a method of compressing data (such as images, audio, or video) in which some information is permanently removed to reduce file size, resulting in a loss of quality.
    • Lossy audio files like MP3s save space but lose some sound detail.
    • The JPEG format uses lossy compression to make photos smaller.
    • For professional editing, avoid lossy formats because they degrade image quality.
Antonyms
What does "lossy" mean? | whatsthatwordmean | whatsthatwordmean