File Compressor
Compress files directly in your browser using GZIP or Deflate. Compare original and compressed size, see the compression ratio, and download the result instantly without uploading your file.
Upload a file to compress
Select a local file and compress it using GZIP or Deflate directly in your browser.
Drag and drop your file here
or
Works best for text, logs, JSON, CSV, XML, code, and other repetitive files.
Compression settings
Format notes
- • GZIP is common for web payloads and downloadable compressed output.
- • Deflate is useful for raw compressed streams in technical workflows.
- • Already compressed files may not shrink much.
Compression result
Compare original size, compressed size, and savings.
Choose a file and run compression to see the results here.
What does this file compressor do?
This browser-based tool compresses a local file using standard web compression formats. It is useful for reducing transfer size, testing payload compression, or preparing files for technical workflows that accept GZIP or Deflate output.
Supported compression methods
This tool supports GZIP and Deflate through the browser’s built-in compression APIs. These methods are practical for web, API, logs, text assets, and other files where compressed binary output is useful.
Compression savings depend heavily on the file type. Text-based files usually compress well, while already compressed files like JPG, PNG, MP4, ZIP, or PDF may show smaller gains.
Private browser-based compression
Your file stays on your device while compression runs locally in the browser. Nothing is uploaded to a server, which makes this useful for quick private compression checks and downloads.