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GZIP decompressor

Restore a single-member GZIP file locally with header, size and CRC-32 integrity checks.

Choose a file

Choose a file to get started, or drag and drop it here.

Up to 16 MiB

Restore the original bytes from a single-member GZIP file, with size and CRC-32 checks.

How it works & useful details

Restore the original bytes from a single-member GZIP file, with size and CRC-32 checks.

Everything runs locally. Files are never uploaded. Maximum 16 MiB per input file, 32 MiB combined, and 1 file. Processing can be cancelled.

GZIP uses DEFLATE. Decompression verifies its header, size and CRC-32 and accepts single-member files only. Maximum expanded output is 32 MiB. A CRC check detects accidental corruption; it does not authenticate a file.