Is It Safe to Unzip Files Online?
The privacy and security implications of using online archive tools. What happens to your files, and which tools you can trust.
The Problem with Upload-Based Tools
Most online ZIP/unzip tools work by uploading your file to their server: 1. You upload your archive 2. Their server decompresses it 3. You download the extracted files 4. Your file remains on their server This means: • A third party has a copy of your files • Their server could be compromised • They might retain your files longer than stated • Your files travel over the internet twice (upload + download) • Transfer can be intercepted if not using HTTPS For personal documents, financial records, work files, or anything sensitive, this is a meaningful risk.
How Local-Only Tools Work
Tools like tarpanda use a different approach: 1. You load a web page (once) 2. The archive engine runs locally in your browser 3. You select a file — it's processed on your device 4. Nothing is uploaded anywhere This is fundamentally safer because your files never leave your device. There's no server involved in the file processing. Even if the tool's server were compromised, your files wouldn't be affected. You can verify this by checking your browser's Network tab — no file data is sent anywhere.
How to Check if a Tool Uploads Your Files
Open your browser's Developer Tools (F12) → Network tab → load a file into the tool. If you see large POST requests, your file is being uploaded. If the only network traffic is the initial page load, the tool processes files locally. tarpanda processes everything locally — you'll see zero network traffic when opening an archive.
Try it now — free in your browser
No download. No signup. Your files never leave your device.
Open Archive ToolRelated Guides
Frequently Asked Questions
Once loaded, the tool works without an internet connection. The engine runs entirely in your browser. You can even save the page for offline use.
Only if the tool processes files locally (like tarpanda). Upload-based tools may violate your organization's data handling policies. Check with your IT department if you're unsure.