🏠 New in High Baseline Support: Compression streams
November 9, 2025
The CompressionStream and DecompressionStream APIs compress and decompress data using the gzip or deflate formats.
Source features
api.CompressionStream[mdn]api.CompressionStream.CompressionStream[mdn]api.CompressionStream.CompressionStream.deflate[mdn]api.CompressionStream.CompressionStream.gzip[mdn]api.CompressionStream.readable[mdn]api.CompressionStream.writable[mdn]api.DecompressionStream[mdn]api.DecompressionStream.DecompressionStream[mdn]api.DecompressionStream.DecompressionStream.deflate[mdn]api.DecompressionStream.DecompressionStream.gzip[mdn]api.DecompressionStream.readable[mdn]api.DecompressionStream.writable[mdn]api.CompressionStream.CompressionStream.deflate-raw[mdn]api.DecompressionStream.DecompressionStream.deflate-raw[mdn]api.CompressionStream.CompressionStream.brotli[mdn]api.DecompressionStream.DecompressionStream.brotli[mdn]