ZIP Extractor

Unzip a ZIP file directly in your browser and get the actual files out of it, with nothing uploaded to any server. You probably received a .zip as an email attachment, a shared link, a dataset, or a software bundle, and you just want the files inside it right now without installing 7-Zip or WinZip and without trusting a sketchy uploader with something confidential. This page opens the archive on your own machine, lists what is inside, and lets you save the files, whether that is everything or just the one file you actually need.

What this conversion actually does (and does NOT do)

Extracting a ZIP is not really a conversion at all. A ZIP is an archive container, not a single file format, so unzipping it does not transform anything: it reconstructs the original files bit-for-bit. ZIP's standard DEFLATE method (LZ77 plus Huffman coding, RFC 1951) is lossless, which means a JPG that went into a zip comes back out as the byte-identical JPG. There is no quality loss, no color-depth change, and no transparency concern the way there is when you genuinely convert one image or document format into another. What went in is exactly what comes out.

Inside a ZIP, every entry is compressed independently, and a central directory at the end of the archive stores the offset of each file. That structure is precisely why a single file can be extracted without decompressing the whole archive, which is the basis for selective extraction. It also explains a common surprise: a zip full of already-compressed content (JPEG, PNG, MP4, MP3, PDFs, or other zips) barely shrinks, because the redundancy those formats rely on has already been squeezed out. A zip of media is roughly the same size as the originals, while a zip of text, CSV, or source code can compress dramatically. So if your extracted files look about the same size as the .zip you started with, nothing is wrong.

One thing extraction does NOT do is round-trip the container perfectly if you later re-zip. The file contents stay identical, but timestamps, file order, and compression settings can change when an archive is rebuilt. A "corrupted or invalid zip" error is also frequently not corruption at all: it is most often an incomplete download or, for an encrypted archive, a wrong password, because encrypted entries report as corrupted when the password does not match.

When to choose an online extractor

Windows, macOS, iOS, and Android all ship with built-in ZIP extraction, so for a plain double-click on your own computer the OS is usually enough. An in-browser extractor earns its place in a few specific situations: when you need selective extraction (find and save one file inside a huge archive instead of unpacking all of it), when you are on a locked-down or managed device where you cannot install 7-Zip, when you are on a Chromebook or phone where the built-in flow is clumsy, or when the archive is confidential and you refuse to upload it anywhere. If instead you want to build a .zip rather than open one, use the compress direction of this tool described on the ZIP compress and extract page.

How to unzip a file

1. Drop your .zip file onto the drop zone, or click to select it from your device.
2. The page is locked to extract mode, so it reads the archive locally and lists the files inside.
3. Save the files you want, either all of them or just the specific ones you need, straight to your device.

No upload. It runs on your device.

The extractor is written in Rust, compiled to WebAssembly, and runs entirely inside your browser tab. Your archive is never uploaded: there are zero network requests for the file itself, so the work continues even if you go offline after the page has loaded, and there is nothing on a server to delete afterward because nothing was ever sent. You can confirm this yourself by opening your browser's DevTools Network tab and watching it stay silent while you extract. That matters because ZIP archives routinely carry the most sensitive material a person handles: customer PII in exported CSV and JSON, contracts and financial statements, source code, medical records, and credentials. For an encrypted archive, the password is used only in memory in the page to decrypt locally and never needs to leave your device.

No limits

Because extraction happens on your machine, there is no practical upload size cap, no file-count limit, no watermark, no sign-up, and no ads. Server-based extractors have to transfer and store the whole archive, which is exactly where their size limits and slowness come from.

Frequently asked questions

Is it safe to unzip files online?

With this tool it is, because the archive never leaves your browser: extraction runs locally in WebAssembly with zero network requests for your file. The usual danger with online unzippers is that they upload your archive to a server you do not control, and here that upload simply does not happen.

Do my files get uploaded to a server when I unzip them?

No. The .zip is read and extracted entirely on your own device, so nothing is transmitted and there is nothing stored remotely to delete later. You can verify this by watching the DevTools Network tab stay quiet while you extract.

Can I extract just one file from a large ZIP without unzipping the whole thing?

Yes. Each entry in a ZIP is compressed independently and the central directory records where every file sits, so a single file can be pulled out without decompressing the entire archive. That makes it practical to grab one document from a huge bundle instead of unpacking everything.

Does extracting a ZIP file reduce the quality of the files inside?

No, extraction is completely lossless. ZIP's DEFLATE compression restores the exact original bytes, so a photo, PDF, or spreadsheet comes out identical to the version that was zipped, with no quality, color, or precision change.

Can I open a password-protected ZIP, and is my password sent anywhere?

An encrypted archive is decrypted with its password locally, and the password is only used in memory inside the page, so it never needs to leave your device. If the password is wrong, the archive will often look corrupted, because encrypted entries report as invalid when the key does not match.

Why does my ZIP say it's corrupted or invalid when I try to extract it?

Genuine corruption is less common than people assume. The two usual culprits are an incomplete or interrupted download (so the file is truncated) and, for encrypted archives, a wrong password, which makes the entry report as corrupted even though the data is fine.

Is there a file size limit for extracting ZIP files here?

There is no practical size cap, because nothing is uploaded. Server-based extractors impose limits because they must transfer and store your whole archive, while local extraction is bounded only by your device's available memory.

How do I unzip a file without installing WinZip or 7-Zip?

Just drop the .zip onto this page and save the files it lists, with no install required. This is especially useful on locked-down or managed computers where you are not allowed to install desktop archive software.

Can I unzip files on a Chromebook, phone, or a locked-down work computer?

Yes, because it runs in the browser there is nothing to install, so it works on Chromebooks, phones, and managed work machines alike. Once the page has loaded it even keeps working offline, since extraction never depends on the network.

What's the difference between unzipping and converting a file?

Unzipping reconstructs the original files unchanged from an archive container, while converting genuinely transforms one format into another. Because a ZIP is just a container, the files you extract are byte-for-byte the same as the ones that were added, with no transformation involved.

Need the opposite direction? Use the ZIP compress tool to bundle files into a new archive. You can also browse the full file tools hub for checksums, CSV viewing, and TSV and CSV conversion.