Learning
Lossless and lossy compression
Lossless compression reduces file size while allowing the encoded data to be restored exactly. Lossy compression permanently removes some information to make files smaller, even when the difference is difficult to see or hear.
Lossless compression reduces file size while allowing the encoded data to be restored exactly. Lossy compression permanently removes some information to make files smaller, even when the difference is difficult to see or hear. IASA guidance
First published 18 July 2026 · Revision 1 · Substantive changes to this entry are dated here.