Gzip / Deflate

Free Online Gzip / Deflate Compression Tool

Compress or decompress text and files with Gzip/Deflate, supporting Base64 text mode and adjustable compression level. Runs fully in your browser for debugging and quick transfer checks.

Input Mode Algorithm Level

Plain text

Base64 output

Usage Guide

Select 'Input' type (Text or File) and 'Mode' (Compress or Decompress).
Choose algorithm (gzip or deflate) and compression level (0-9, default 6).
Text mode supports Base64 input/output; File mode downloads the result automatically.
For file decompression, ensure the file extension matches the algorithm (.gz or .deflate).

Tips

All processing is done locally in your browser; no data is uploaded.
Gzip format includes headers, while Deflate is a raw compressed data stream.
Use a ZIP tool for multi-file archives; this tool is for single-stream compression.

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