Computer Science for IGCSE & O level - Data Representation (Section 13 - No. 10)
What does 'lossy compression' mean?
The compression process is reversible, and no data is lost.
Some of the data in the original file is discarded to reduce file size.
The original file can be perfectly recreated from the compressed version.
It is only used for text files.
Forklaring
Lossy compression involves discarding some data to achieve a smaller file size. The compression process is not perfectly reversible.