Unzip Files Online Without Uploading
Open a .zip file to see its folder tree with sizes, compression and dates. Preview text and images, download individual files, or pack just the files you select into a new ZIP — all without installing an archiver.
How to extract a ZIP file
- Choose or drop a .zip file of up to 200 MB.
- Read any warnings (encrypted files, unusual compression ratios, unsafe paths), then browse or filter the file tree.
- Click the eye icon to preview a text file or image, or the download icon to save a single file.
- Tick several files or whole folders and choose Download selected as ZIP to get them in one archive.
Supported formats
- Input
- ZIP
- Output
- Original files, ZIP
- Maximum size
- 200 MB per file (limited by your device's memory)
Built-in safety checks
Archives can be hostile. Entry names containing ../ or absolute paths (the "zip slip" trick) are cleaned before display and download. Before anything is decompressed, the declared sizes are checked: at most 1 GB can be extracted at a time, entries compressing more than 100:1 are flagged, and decompression stops if a file produces more data than its header claims. Every extracted file is verified against its CRC-32 checksum. HTML and SVG files are previewed as text only. To inspect an extracted file further, use the File Information Viewer.
Benefits
- Works on locked-down computers and Chromebooks where you cannot install software.
- Lists archives that contain password-protected entries instead of failing entirely.
- Extract only what you need instead of unpacking a whole large archive.
Limitations
- Password-protected (encrypted) entries can be listed but not extracted.
- Only the Stored and Deflate methods are supported; Deflate64, BZIP2, LZMA and Zstandard entries cannot be decompressed in the browser.
- RAR, 7z, TAR and GZIP archives and split (multi-part) ZIPs are not supported.
Privacy and security
The archive is read into memory in this tab and decompressed with the browser's built-in DecompressionStream. No file or file name leaves your device.
Read our privacy policy for details about the site as a whole.
Frequently asked questions
Why can't I extract some files?
They are either encrypted (shown with a lock) or use a compression method browsers don't implement, such as Deflate64 produced by Windows for very large files. A desktop archiver like 7-Zip can open those.
What is a ZIP bomb?
A small archive crafted to expand into gigabytes or terabytes and exhaust memory. This tool checks sizes before extracting, caps output at 1 GB and stops any entry that inflates beyond its declared size.
Can I open .docx, .xlsx or .apk files?
Yes — those formats are ZIP containers. Rename the file to .zip (or open it directly) to browse the XML and media files inside.
Are folder structures kept when downloading a selection?
Yes. The new ZIP keeps each file's folder path, with any unsafe ../ or drive-letter segments removed.