CSV Decompressor
Upload and decompress your GZ files to extract CSV content. You can also view and analyze uncompressed CSV files.
Quick start
- 1
Upload your GZ or CSV file
Use the file input to select a compressed GZ file or an uncompressed CSV file.
- 2
Decompress the file
For GZ files, click Decompress to extract the original CSV content.
- 3
View extracted data
Browse and analyze the decompressed CSV content directly in your browser.
- 4
Download the CSV
Download the decompressed CSV file for further analysis or processing.
Data stays on your device
All decompression runs locally in your browser. Your files never leave your device.
Our CSV decompressor extracts CSV content from GZIP-compressed files entirely in your browser. Upload a .gz file to decompress it, or a .csv file to view it directly — no server interaction required.
~300 MB
Max file size
0 bytes
Data transmitted
.gz, .csv
Supported formats
100% Free
Our CSV decompressor is completely free with no hidden costs or subscriptions.
Privacy-Focused
Your data never leaves your device. All decompression happens locally in your browser.
Fast Decompression
Quickly decompress even large GZ files with our optimized in-browser implementation.
No Installation Required
Use the CSV decompressor directly in your web browser, no software installation needed.
What file formats can I decompress?
You can upload .gz (GZIP) files to decompress and extract their CSV content, or upload uncompressed .csv files to view directly.
Is my data private during decompression?
Yes. All decompression runs entirely in your browser. Your files never leave your device or touch our servers.
What is the maximum file size?
You can decompress GZ files up to 300 MB. The decompressed CSV content is displayed directly in your browser.
How does GZIP decompression work?
GZIP uses the DEFLATE algorithm, combining LZ77 and Huffman coding. Our tool reverses this process in your browser to restore the original CSV data without any loss.
Why Use Our CSV Decompressor?
- Free and easy-to-use online tool for decompressing GZ files and extracting CSV content
- Quickly access the contents of compressed CSV files for analysis
- Securely process your files entirely in your browser - we don't store your data
- Compatible with various GZ compressed files and CSV formats
- Ideal for data analysts, researchers, and anyone working with compressed datasets
- Prepare your data for import into databases or analysis tools
About GZ Compression and CSV Files
GZ (Gzip) is a popular file compression format used to reduce the size of files, including CSV (Comma-Separated Values) files. Gzip uses the DEFLATE algorithm, which combines LZ77 and Huffman coding to achieve efficient compression without data loss.
When working with large datasets, it's common to compress CSV files using gzip to save storage space and reduce transfer times. Our CSV Decompressor tool allows you to easily extract the original CSV content from these compressed GZ files, making your data immediately accessible for analysis or import into other tools.