bit-preserving compression
nounA way to make a computer file smaller without losing any of the original information.
The archiver uses bit-preserving compression so the restored program is exactly the same as the original.
OTHER MEANINGS
2. A data reduction method in which every original bit can be reconstructed perfectly from the compressed form.
Bit-preserving compression is required for executable files and medical images where any change is unacceptable.
3. Compression that guarantees byte-for-byte identity after decompression, often verified by hash comparison.
The backup tool advertises bit-preserving compression and validates each restored file with SHA-256.
4. A coding scheme that removes statistical redundancy without discarding any source information.
Huffman coding is a classic example of bit-preserving compression used in text and image formats.