Our free Gzip Decompressor restores GZIP (.gz) archives back to their original uncompressed files. Powered by native browser DecompressionStream APIs, unpack server logs, SQL database dumps, and compressed code assets directly in memory with 100% data privacy.
Select or drop your .gz file into the uploader zone.
Verify the archive size and output filename restoration settings.
Click "GZIP Decompress" to unpack and download your uncompressed file.
Leverages native browser stream decompression for maximum unpacking speed without external library overhead.
Automatically strips the .gz suffix to restore the original file extension and document title.
Decompress server logs, SQL backups, and binary data entirely within client JavaScript RAM.
Inflating GZIP Streams (.gz & .tgz): Decompressing GZIP files requires parsing RFC 1952 header flags (extracting original filename, modification timestamp, and compression method) and inflating raw DEFLATE data streams back to their uncompressed byte representation.
CRC-32 Checksum & Uncompressed Size Validation: GZIP archives append a 4-byte CRC-32 checksum and 4-byte uncompressed size modulo 2^32 at the end of the byte stream. BunchTool validates these trailing bytes during decompression to detect corrupted archives or incomplete network downloads.
100% Private In-Browser GZIP Inflation: Decompressing server logs, database backups, or web payloads runs entirely in browser memory using native DecompressionStream('gzip') APIs. Unpacked data files are saved locally without external server processing.