UtilityBaseProductivity Tools
ZIP Extractor
Open, browse, and extract zip files — or create one — right in the browser.
Updated July 8, 2026
How to use the zip extractor
- 1Drop a .zip file to list everything inside it.
- 2Download individual files, or Extract all.
- 3Switch to Make a zip to bundle files the other way.
- 4Allow multiple downloads if the browser asks during Extract all.
Common uses
- Opening a zip attachment on a machine without extraction software
- Peeking inside an archive before extracting anything
- Pulling one file out of a large downloaded archive
- Bundling several files into one attachment for email
Frequently asked questions
When is a browser unzipper actually useful?
Machines where you can't install software — school Chromebooks, locked-down work laptops, a friend's computer — and any time the zip contains things you'd rather not hand to an 'online unzipper' that processes files server-side. It's also just fast for peeking inside an archive before deciding what to extract.
Why don't password-protected zips work?
Two reasons: supporting the common legacy 'ZipCrypto' scheme would be doing you a disservice (it's cryptographically broken — tools crack it in seconds, so it protects nothing), and proper AES-encrypted zips need dedicated software. For actually-secure archives, use an encrypted 7z or an age/VeraCrypt container.
Can it open .rar and .7z files?
No — those are entirely different formats, not zip variants, despite all being 'archives'. Rar is proprietary; 7z uses different compression (LZMA). Free desktop tools like 7-Zip handle all three. This tool does one format properly rather than several badly.
Why doesn't zipping my photos make them smaller?
Because JPEGs, PNGs, videos, and PDFs are already compressed — zip's DEFLATE algorithm finds almost no remaining redundancy and may add a few bytes of overhead. Zip earns its keep on text, code, CSVs, and spreadsheets (often 5–10× smaller), and as a way to bundle many files into one attachment regardless of savings.
About this tool
The zip extractor opens archives without installing anything: drop a .zip to see every file inside with its size, download files individually, or extract them all. A second mode goes the other way, bundling files you choose into a new zip. Both directions use fflate, a fast pure-JavaScript implementation of the format, running entirely in your browser — handy on locked-down school and work machines, and safer than 'online unzipper' sites that hold your files on their servers. Password-protected zips and rar/7z formats are honestly out of scope.
Like most tools on UtilityBase, the zip extractor runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more productivity tools here.
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