Reduce File Size Compressor
Compress Any File Type With One Click
Need to use Reduce File Size Compressor right now?
Works on any file type since it compresses raw bytes rather than a specific format.
Drop any file to compress
Processed locally in your browser — never uploaded
Works on any file type using your browser's native GZIP compression — no library, no upload. How much it shrinks depends entirely on the file's content (already-compressed files like JPGs or MP4s won't shrink much further).
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Reduce File Size Compressor
Sometimes you just need to shrink a single file — a large text file, a log, a data export — without the overhead of a full archive tool. This works on any file type using your browser's own built-in GZIP compression, with zero external library needed for the compression itself.
Modern browsers include a native CompressionStream API supporting GZIP directly — this tool pipes your uploaded file through that stream, producing a standard .gz file that any GZIP-compatible tool can decompress, including this site's own GZIP Extractor.
How much a file shrinks depends entirely on its content: text-heavy files (logs, CSVs, plain documents) typically compress significantly, while already-compressed formats (JPG, MP4, PNG, ZIP) barely shrink further at all, since there's little redundancy left for GZIP to exploit.
Everything happens locally in your browser using a native web platform API — no upload, no external library, and the compressed result is ready to download immediately.
How it works
- Upload any file. Works on any file type.
- Compression runs natively. Your browser's built-in GZIP API handles it.
- Download the compressed file. A standard .gz file, ready to share or store.
Examples
Shrinking a large log file
Input
50MB text log
Output
a much smaller .gz file