Utility Tools
File Extractor
Inspect and extract files from ZIP, TAR, and GZ archives directly in your browser.
File Decompressor
The FreeTechLearner File Decompressor leverages modern browser Web APIs, specifically the high-throughput `DecompressionStream` interface, to inflate GZIP (`.gz`, `.gzip`), Deflate, and ZLIB compressed files directly inside your client browser. It streams uncompressed data into memory in real time, delivering instant uncompressed file downloads while safeguarding sensitive data.
Drag & drop GZIP / Deflate compressed file here, or click to select
Supports: .gz, .gzip, .deflate, .zlibWhat is the File Decompressor?
The File Decompressor inflates GZIP and Deflate compressed data streams using native browser APIs and produces original uncompressed files.
How to Use
- Upload or drag your .gz, .gzip, or .deflate file into the upload zone.
- The native DecompressionStream API decompresses data in real time.
- Check the original compressed size vs uncompressed size summary.
- Click "Download Decompressed File" to save your file.
Common Use Cases
- Decompressing server access logs (.log.gz) for local inspection.
- Uncompressing database backup dumps (.sql.gz).
- Decompressing web resources and API payloads.
- Inspecting compressed files without opening terminal commands.
Key Benefits
- Powered by native browser DecompressionStream API for high speed.
- 100% client-side — your data remains confidential.
- Real-time size comparison report.
- Zero software or command-line installation needed.
- Free with unlimited usage.
Frequently Asked Questions
What compression streams can this tool decompress?
It decompresses GZIP (.gz, .gzip), Deflate (.deflate), and ZLIB (.zlib) compressed files.
How does browser-native decompression work?
The tool utilizes the W3C standard DecompressionStream API supported natively by modern web browsers for maximum speed and memory efficiency.
Is my compressed file uploaded to a server?
No. Decompression streams execute locally inside your web browser. No data is sent over the network.
What is the difference between GZIP compression and ZIP archives?
GZIP is a single-file stream compression format commonly used for web assets and log files, whereas ZIP is an archive format containing multiple files and folders.
Can I decompress large log files (.log.gz)?
Yes, large compressed server logs and database dumps can be decompressed quickly in browser memory.
How do I download the decompressed output file?
Once decompression finishes, the tool displays original vs decompressed sizes and provides a "Download Decompressed File" button.
What happens if a file is not valid GZIP or Deflate format?
An error message will notify you that the file format is invalid or corrupted.
Do I need command-line tools like gunzip or gzip?
No command-line utilities or terminal commands are required.
Does this tool support Brotli (.br) decompression?
Currently it focuses on GZIP and Deflate streams natively supported by browser DecompressionStream.
Is this File Decompressor free to use?
Yes, it is 100% free with unlimited decompressions.
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