GZIP Workbench
Compress a file to GZIP or open a GZIP file. Compare file sizes and download the result without uploading your file.
What does GZIP compression preserve?
GZIP compresses the bytes of one file losslessly. Decompressing restores the original bytes. It does not create a multi-file archive by itself.
Your result
A little clarity, right here.
Choose a file and run the tool. Your result will appear here, ready to download.
Three simple steps
How to use GZIP Workbench
Choose a supported file from your device.
Set the options and run the tool.
Review the report, then copy or download your result.
Common questions
Good to know
Understand the result.
Keep the original.
Is this tool free, and are my files uploaded?
This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.
What are the limits and details?
Input is limited to 20 MB and decompressed output to 50 MB. A compressed file can expand substantially; oversized output is stopped.
Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.