kb/data/developer.mozilla.org/en-US/docs/Glossary/Lossless_compression-0.md

title	chunk	source	category	tags	date_saved	instance
Lossless compression - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/Lossless_compression	reference	web, html, css, javascript, documentation	2026-05-05T05:37:03.611676+00:00	kb-cron

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1. Glossary
2. Lossless compression

Lossless compression

Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data. Lossless compression methods are reversible. Examples of lossless compression include gzip, brotli, Zstandard, WebP, and PNG. Lossy compression, on the other hand, uses inexact approximations by discarding some data from the original file, making it an irreversible compression method. Compression methods such as WebP are capable of both lossy and lossless compression depending on the compression level or the options you want to use during encoding.

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See also

• Related glossary terms:
  • Lossy compression