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Frequently Asked Questions
Unzip Tool — frequently asked questions
Is this ZIP extractor free?
Yes, 100% free with no limits. No signup, no paywall, no ads — extract as many ZIP files as you like.
Is my data safe?
Your ZIP file is processed entirely in your browser using the JSZip library. Nothing is ever uploaded to a server. You can verify this in your browser's Network tab — there are zero outbound data requests.
What file types can I preview?
Text-based files (TXT, JS, TS, CSS, HTML, JSON, CSV, MD, XML, YAML, PY, SH, SQL, INI, ENV, etc.) and images (PNG, JPG, JPEG, GIF, WebP, SVG) can be previewed inline. Binary files show a download prompt instead.
Can I download all files at once?
Yes — click the ⬇ All button to re-package and download the entire contents as a new ZIP file. You can also click the download icon next to any individual file in the preview panel.
Are password-protected ZIPs supported?
Not currently. Password-protected (encrypted) ZIP files will show an error. You would need to remove the password protection first using a local tool like 7-Zip.
Is there a file size limit?
There is no artificial limit — the only constraint is your browser's available RAM. ZIP files up to several hundred megabytes work fine in modern browsers.
Open ZIP File Online — Free Extractor & Viewer, No Upload Required
Need to open a ZIP file online without installing software? This browser-based extractor lets you instantly browse any ZIP archive, preview its contents, and download individual files — all without uploading anything to a server. Every byte stays on your device.
How to use
Drop your .zip file onto the drop zone (or click to browse). The file tree appears on the left — click any file to preview it on the right. Text files and images render inline; everything else can be downloaded directly.
Privacy first
Unlike online tools such as ezyZip or B1 Online Archiver, this tool never transmits your data. It runs entirely via the JSZip JavaScript library in your browser tab — making it the safest way to open ZIP files online.