Zip and unzip on Windows, done right

Compressing and extracting files is one of those everyday tasks Windows sort of handles — until it doesn’t. Making a ZIP works fine. But then you download a .7z and the double-click leads nowhere, or you need to peek inside an archive without unpacking the whole thing, or you have to email a folder and end up second-guessing whether the person on the other end can even open what you send. Each of those is a small snag, and together they turn a two-second job into a hunt.

This guide walks the whole loop — creating an archive, browsing inside one like it’s a folder, and extracting every format you actually meet, passwords included — and does it honestly, including the things this approach deliberately doesn’t do. If your specific need is just opening a stubborn 7z or RAR, there’s a focused guide for that (linked below); this one is the complete round trip.

Creating a ZIP: keep it simple, keep it universal#

Start with the easy half. Select the files or folders you want to bundle, choose Compress (ZIP), pick where to save, and you have a .zip. Folders go in recursively, keeping their internal structure, and if you selected several things they all land in the same archive. Nothing exotic — and that’s the point.

There’s a good reason to default to ZIP for anything you’re going to send: it’s the one format that opens on any Windows machine, and basically any Mac or phone, with nothing installed. When you email a ZIP, you never have to wonder whether the recipient has the right program — they always do. That universality is worth more than a slightly smaller file most of the time.

When you do want more control, there’s an advanced Compress and extract window. For creating, it adds a compression level to trade speed against size — Fast, Normal and Maximum — plus .tar, .tar.gz and .tar.bz2 for the cases (often developer or Linux-bound) where those are expected. A progress bar tracks the work, and cancelling a compression cleans up the half-written file instead of leaving a broken archive behind.

Here’s the honest boundary, stated plainly: the app creates ZIP (and the tar family above) — it does not create .7z or .rar files. That’s not an oversight; authoring those specific formats would require licensing that no app can simply bundle for free. It extracts 7z and RAR happily, as you’ll see next — but for making a new one, ZIP is what it writes, and for everyday “I need to send this compressed”, ZIP is the right answer anyway. If you specifically need to author a 7z or a RAR, the dedicated tools built for that (7-Zip, WinRAR) are the honest recommendation.

Browsing inside an archive like a folder#

This is the part that quietly removes the most friction. You don’t always want to extract an archive — sometimes you just want to see what’s in it, or pull out one file. So double-click a .zip and it opens like a folder, right inside the same window, and you can browse the contents as if they were ordinary files. No external program launches; you navigate in, look around, and decide.

One honest note, because it matters: what you’re browsing is a look inside the package, not a live edit of it. Changes you make while peeking don’t flow back into the original .zip — a small status message says as much. To actually change an archive’s contents, you extract it, edit the files, and compress again. For the overwhelmingly common case — “what’s in here, and do I need it?” — browsing in place is exactly right, and far quicker than unpacking a whole archive to check one thing.

Extracting: every format you meet, passwords included#

Now the other half. To pull files out of an archive, select it, choose Extract, and pick a destination folder. The advanced window handles the formats you actually run into: .zip, .7z, .rar (both the older and newer RAR versions), .tar, .tar.gz, .tar.bz2, .tar.xz, and loose .gz, .bz2 and .xz files. It recognizes them by their actual content, so a ZIP that someone renamed to .dat still opens correctly.

Two details earn their keep in real life:

• It opens password-protected archives. When a .zip, .7z or .rar is protected, the app asks for the password as it extracts — you type it, and it unpacks normally. This is precisely the case Windows’ own built-in extraction doesn’t cover.
• Extraction is careful about where files land. A maliciously crafted archive can try to write files outside the folder you chose (an old trick known as “zip-slip”); the app checks every entry’s destination and refuses any that would escape your chosen folder, across every format it handles.

And extracting never touches the original — the .zip, .7z or .rar stays where it was. Getting the contents out is a copy, not a move.

Give Windows its due — and know its limits#

It’s only fair to credit the built-in option, because it’s better than it used to be. Recent Windows 11 (from the 23H2 update) extracts .7z and .rar natively, with nothing installed — right-click, extract, done, the same way ZIP always worked. If you’re on an up-to-date Windows 11 and the archive is a simple one, you may not need anything else at all, and that’s genuinely a nice step forward.

Where the built-in feature stops is worth knowing so you’re not caught out:

• It extracts but doesn’t create 7z or RAR — the same limit the app has, for the same licensing reason. (ZIP creation works in both.)
• It doesn’t handle passwords — a protected RAR simply won’t open, and it never asks. That’s exactly the gap the app’s password-aware extraction fills.
• It’s Windows 11 only. On Windows 10, native 7z/RAR extraction doesn’t exist, so the double-click still leads nowhere without a tool.

So the picture is honest and simple: on new Windows 11, easy archives open for free; for password-protected ones, for Windows 10, or just to do the whole create-browse-extract loop in one window, that’s where doing it inside the explorer helps. And, as always, it all runs 100% on your PC — nothing about your files leaves the machine.

The whole loop, in short#

1. To send files compressed: select them, choose Compress (ZIP), save. ZIP opens everywhere with nothing installed. Need a level or tar variant? Use the advanced Compress and extract window (Fast / Normal / Maximum).
2. To peek inside an archive: double-click it and browse the contents like a folder. (Changes there don’t save back — to edit, extract first.)
3. To extract anything — including 7z, RAR and password-protected files: select the archive, choose Extract, type the password if asked, pick the destination.
4. On new Windows 11 with a simple 7z/RAR: the built-in right-click extract may be all you need.

If your question is really “how do I just open this 7z or RAR someone sent me?”, we wrote a focused guide on opening and extracting 7z and RAR files. This post is the fuller story — creating, browsing and extracting — for when compression is a regular part of your day. And since archives tend to pile up in Downloads, pairing this with a look at freeing up disk space keeps the clutter from creeping back.