Open .gz Files Online - Free Gunzip Tool (No Upload)
Extract .gz files and decode Base64 gzip strings online in your browser. Free gunzip tool with no upload, instant download, and private client-side processing.
Open a .gz file online in File mode or decode a Base64 gzip string in String mode. Everything runs in your browser, so you can extract content instantly without uploading your data.
Input
Drag & drop a .gz file here, or click to select
Output
File processed successfully. Download should start automatically.
Open .gz Files & Gzip Strings
Open .gz files and decode Base64 encoded gzip strings in one tool.
No Upload Required
All decompression happens locally in your browser, so your data stays on your device.
Instant Browser Extraction
Extract compressed content in seconds without installing gunzip or any desktop app.
How to Open .gz Files and Decode Gzip Strings Online
Open .gz files, extract compressed content, and decode Base64 gzip strings online without terminal commands, software installs, or file uploads.
Gunzip Tool FAQ for .gz Files and Base64 Gzip Strings
How do I open a .gz file online?
Choose File mode, upload your .gz file, and click Decompress. The file is extracted directly in your browser, and the uncompressed version downloads automatically without requiring terminal commands or software installation.
Is my data safe?
Yes, absolutely. This tool runs entirely in your web browser using JavaScript. Your files and data are never uploaded to our servers, ensuring complete privacy and security.
Can I decode a Base64 gzip string?
Yes. Switch to String mode, paste the Base64 gzip string, and click Decompress. The tool decodes the Base64 input first and then expands the Gzip data to reveal the original text in the output panel.