Drop your GZ file here
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GZ
GZIP
Instant decompression
Open and decompress GZIP (.gz) files directly in your browser. View compressed log files, text documents, and data files without command line tools. GZIP is widely used for web compression and log file storage. For TAR.GZ archives containing multiple files, use our TAR Viewer.
or click to browse files
GZIP files are decompressed instantly in your browser. View the contents without waiting for file downloads or server processing.
Perfect for viewing compressed server logs, application logs, and system logs. Search through large log files efficiently.
GZIP is the standard compression for web content. HTTP servers use it for faster page loads. Our viewer uses the same technology.
Search through decompressed file contents. Find specific text, error messages, or patterns in large compressed files.
Extract and download the decompressed file with one click. No gunzip command needed.
Files are decompressed locally in your browser. Your data never leaves your device.
Drag and drop your .gz file onto the upload area, or click to browse. We support all GZIP compressed files.
The file is automatically decompressed. For text files, view the content directly. For binary files, see file information.
Search through text content or download the decompressed file to your device with a single click.
A GZ file is compressed using GZIP (GNU ZIP), a popular compression algorithm. Unlike ZIP or RAR, GZIP compresses a single file rather than creating an archive of multiple files. It's commonly used for log files, database dumps, and web content compression. For multiple files, GZIP is typically combined with TAR (.tar.gz).
A .gz file is a single compressed file. A .tar.gz file (also called .tgz) is a TAR archive (containing multiple files) that has been compressed with GZIP. If you have a TAR.GZ file with multiple files, use our TAR Viewer instead.
Our online GZ viewer works on any operating system with a web browser - Windows, Mac, or Linux. Just upload your .gz file and view the contents instantly. No need to install software or use command line tools like gunzip.
Yes! GZIP is commonly used to compress server logs, application logs, and system logs. Our viewer can decompress and display these text-based log files, letting you search through content and find specific entries without downloading large uncompressed files.
GZIP is fast and efficient, making it ideal for real-time web compression. Web servers compress HTML, CSS, and JavaScript with GZIP before sending to browsers, reducing transfer times by 60-80%. All modern browsers support GZIP decompression natively.
Absolutely. All decompression happens locally in your browser using JavaScript. Your files are never uploaded to our servers, making it safe for sensitive data like log files, database exports, and confidential documents.
GZIP was created by Jean-loup Gailly and Mark Adler in 1992 as a free replacement for the Unix compress utility. It uses the DEFLATE algorithm, combining LZ77 compression with Huffman coding. GZIP has become one of the most widely used compression formats, particularly for web content and log file storage.
The GZIP format includes a header with metadata (filename, timestamp, operating system) followed by compressed data and a CRC-32 checksum. This makes GZIP files self-describing and verifiable. The format is standardized in RFC 1952 and supported by virtually all operating systems and programming languages.
Web servers like Apache, Nginx, and IIS use GZIP to compress responses before sending them to browsers. This reduces bandwidth usage and improves page load times. When you enable GZIP compression on your website, text-based files (HTML, CSS, JavaScript, JSON) can be reduced by 60-80% in size.
For image optimization, GZIP is less effective than format-specific compression. Consider using WebP or PNG compression for images instead. GZIP excels at compressing text, code, and structured data like XML and JSON files.