What Are File Compressors?
File compressors reduce file size or bundle multiple files together - like shrinking a video for faster uploads, or packing a folder of files into a single TAR.GZ archive. Everything here runs 100% in your browser using WebAssembly and the Compression Streams API - no data uploaded, completely free, unlimited, and no signup required.
Whether you're preparing a video for email attachment limits or archiving a batch of files for storage, good file compressors save time and bandwidth without needing desktop software or a third-party upload service.
Why Use These Online File Compressors?
- Instant results with no installation needed
- Full privacy - your files never leave your device
- Free and unlimited use with no signup
- Fine-grained control over quality and output format
- Works offline once the page has loaded
Tools Available in This Category
Video Compressor
Shrink video files with an adjustable quality slider, resolution presets, and a choice of H.264, VP9, or AV1 encoding - with fast GPU-accelerated encoding where supported, or a CPU fallback for maximum compatibility.
File to TAR
Bundle any files into a TAR or TAR.GZ archive, with an option to strip original extensions or combine everything into one file.
Frequently Asked Questions
Are these file compressors private?
Yes. All processing runs 100% in your browser. No files are uploaded to a server or stored anywhere.
Do I need to install anything?
No installation or signup is required. They work instantly in any modern browser.
Will compressing my video reduce its quality?
Some quality loss is inherent to compression, but the adjustable quality slider lets you choose exactly how much you're willing to trade for a smaller file size.
Start Compressing Files Now
Scroll back up to the tool grid and pick the compressor you need. Everything runs privately and instantly in your browser.