Open a .zip online

Q: How do I open a .zip file online?

Open the tool and drop your `.zip` onto it. ZipTool parses the archive entirely in your browser — no install, no upload. The file tree appears, and you can browse, search, preview, and extract the contents. For full steps across Windows, Mac, and Linux, see [how to open a zip file](/how-to-open-a-zip-file).

Q: Can I open files that are secretly ZIP, like .apk or .docx?

Yes. Android `.apk`, `.epub`, Java `.jar`/`.war`, Python `.whl`, Office `.docx`/`.xlsx`/`.pptx`, and `.xpi` are all ZIP containers internally — their bytes start with the `PK` signature. ZipTool opens and previews them with the same workflow as a plain `.zip`.

Open, browse, preview, extract, or create a .zip in your browser — no install, no upload.

Drop your .zip anywhere on this page

Parsed entirely in your browser — nothing is uploaded.

A .zip is the universal compressed archive — it bundles many files into one and shrinks them, and every operating system opens it without extra software. "Zip online" usually means one of two things, and most sites do the worse one: you upload the file, a server unzips it, and sends the listing back. ZipTool does the other thing. You drop the .zip on the page and it is parsed entirely in your browser, with nothing uploaded and nothing installed.

You open the tool, drop the .zip onto it (or paste a direct URL), and the file tree renders locally. Browse the contents, search by name, and preview code, images, audio, video, and PDFs without unpacking anything to disk — then extract when you are ready. The whole parse runs in your tab; you can prove nothing is uploaded by opening a zip and disconnecting from the internet, then watching browsing and previewing keep working.

What you can do with a zip here

One archive, three workflows — pick the one that matches what you need.

Browse and preview — look inside the zip without writing anything to disk. Click any entry to read code with syntax highlighting, view images, play audio/video, or render a PDF. This is the online zip viewer workflow.
Extract — get the real files out. Use extract-all to write the original files to a folder you choose (Chrome/Edge) or download them as a bundle (Firefox/Safari). See extracting a zip online.
Create — build a new zip from your files, right in the browser. See create a zip online.

The hidden ZIP family

A large number of file types are secretly ZIP containers, so opening "a zip" covers far more than .zip. Android .apk, .epub ebooks, Java .jar and .war, Python .whl, .xpi, and Office OOXML (.docx, .xlsx, .pptx) all start with the same PK signature as a .zip. ZipTool opens and previews all of them with the same workflow — there is no separate reader per extension. For the full picture, see archive file formats.

Beyond the ZIP family, the same tool decodes non-ZIP formats directly: .rar (via a WebAssembly unrar — see /rar), .7z (via a WebAssembly 7-Zip — see /7z), and .tar.gz, .tar, .gz (native decompression — see /tar-gz, /tar, /gz). You can also repack a RAR as a ZIP entirely in-browser — see convert RAR to ZIP. On Linux, you can open a zip with no install — see zip file on Linux.

How to open a zip in your browser

No install, no account, no upload. The browser parses the archive locally.

Go to ZipTool and drag the .zip onto the page (or use the file picker, or paste a URL).
The file tree opens on the left. Expand folders and search to jump to any entry.
Click a file to preview it inline, or use extract-all to write everything to a folder.
For platform-by-platform steps including the OS built-ins and the command line, see how to open a zip file and how to extract a zip file.

Honest limits

An in-browser zip tool is genuinely useful, with a few real boundaries.

Encrypted entries need the password. ZipTool decrypts password-protected ZIP archives (including AES, which the built-in Windows/macOS tools often reject) when you supply the password; it cannot bypass encryption you do not have the key for. See zip encryption explained.
Extract-to-folder needs Chrome or Edge. Writing a real directory tree uses the File System Access API, absent in Firefox and Safari; there you download the contents as a zip instead.
Large archives and zip bombs. A browser tab has finite memory; an archive engineered to decompress to a vast size (a "zip bomb") can freeze the page. Open archives from sources you trust. See what is a zip bomb.

Frequently asked questions

How do I open a .zip file online?

Open the tool and drop your .zip onto it. ZipTool parses the archive entirely in your browser — no install, no upload. The file tree appears, and you can browse, search, preview, and extract the contents. For full steps across Windows, Mac, and Linux, see how to open a zip file.

Do you upload my zip?

No. The archive is parsed entirely in your browser; your file contents are never sent to a server, never stored, and never handed to a third party. Confirm it in DevTools — the Network tab shows no upload — and by disconnecting from the internet after the page loads: browsing, previewing, and extracting keep working.

Can I open files that are secretly ZIP, like .apk or .docx?

Yes. Android .apk, .epub, Java .jar/.war, Python .whl, Office .docx/.xlsx/.pptx, and .xpi are all ZIP containers internally — their bytes start with the PK signature. ZipTool opens and previews them with the same workflow as a plain .zip.

Is opening a zip online free?

Yes. Browsing, searching, previewing, and extracting a zip is completely free, with no account and no install. Core zip viewing always will be.

Can it open a password-protected zip?

Yes, when you have the password. ZipTool decrypts password-protected ZIP archives — including modern AES-encrypted zips that the built-in Windows and macOS tools often reject — once you enter the password. It cannot open an encrypted zip without the key.