GZIP Decompressor

Open a GZIP stream and restore its uncompressed bytes without uploading the file.

Choose GZIP file

—Input size

—Output size

—Size change

—Browser support

Choose a fileUses the browser's native Compression Streams API; no file is uploaded.

How to use this GZIP Decompressor

Decompress a .gz file locally in your browser. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.