File Decompressor
Decompress your .zip, .gz, .zst, .brotli, .7z-ultra, .7z, or .rar files back to their original format. All processing happens directly in your browser - no data is sent to any server.
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Files are processed locally and never uploaded
.ZIP.GZ.ZST.BR+3 more
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Quick Answer
File decompression extracts files from compressed archives like ZIP, 7z, RAR, or TAR.GZ. To decompress files, upload the archive, select files to extract, and download. The original files are restored to their full size. Our tool supports multiple archive formats and processes files locally in your browser.
Key Features
- ZIP, 7z, RAR, TAR, and GZIP are common compression formats
- Decompression restores files to their original size and format
- Password-protected archives require the password to extract
- Browser-based decompression processes files locally without server uploads
- Windows Explorer can extract ZIP files natively
- 7-Zip and WinRAR are popular desktop decompression tools
- TAR.GZ is commonly used for Linux/Unix software distribution
How this conversion works
ZIP, 7z, RAR, TAR, and gzip archives are decompressed in-browser. Output files stream to your Downloads folder as they are extracted.
What this tool can’t do
- Extremely large files are bounded by your device memory, not by server capacity. A very low-memory tablet may fail to load a 4K video where a desktop completes in seconds.
- WebAssembly codec support lags slightly behind native desktop tools. For obscure or experimental codecs, a native tool (like desktop FFmpeg) is still the right choice.
When to consult a professional
If you need batch-processing millions of files, a server-side pipeline will outperform per-user browser conversion. For DRM-protected media, a legitimate licensed reader is required.
Sources
- [1]MDN — WebAssembly (Wasm)Documentationdeveloper.mozilla.orgAccessed Apr 21, 2026
- [2]FBI Denver — Free Online File Converter Scam WarningOfficial sourcefbi.govAccessed Apr 21, 2026
Public service announcement on malicious online file converters.
- [3]PKWARE — APPNOTE (ZIP file format specification)Official sourcepkware.cachefly.netAccessed Apr 21, 2026
Joseph OrdunaFounder & Software Engineer
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).