You clicked a download link — maybe on GitHub, maybe from an open-source project's website — and instead of the usual .zip, you got a file ending in .tar.gz. Windows doesn't know what to do with it, and every guide you find online seems to assume you're comfortable typing commands into a terminal. You just want to see what's inside.
You're not doing anything wrong, and you don't need to learn command-line tools to fix this.
What .tar.gz Actually Is
Think of it as two steps bundled together, both borrowed from the Linux and open-source world:
- TAR ("tape archive") bundles multiple files and folders into a single file, without compressing anything — like putting loose papers into a single folder.
- GZ (gzip) then compresses that bundle to make it smaller — like shrink-wrapping the folder.
Put them together and .tar.gz is functionally very similar to a .zip file: it's a compressed collection of files. The main reason you're seeing it instead of a .zip is that it originated from a Linux-based tool or a developer's project, where .tar.gz is the default packaging format rather than .zip.
Windows doesn't have native support for it the way it does for ZIP, which is why double-clicking does nothing useful — or worse, tries to open it as an unfamiliar file type entirely.
Skip the Terminal
Most guides for opening .tar.gz files jump straight to terminal commands like tar -xzvf filename.tar.gz. That works fine if you're a developer, but it's genuinely unnecessary for someone who just wants to grab the files inside a download.
You don't need to install a Linux subsystem, learn command syntax, or install a desktop archive tool just to open one file. A browser-based extractor handles it just as easily as a ZIP file.
How to Open It in Your Browser
unpk.app supports .tar.gz extraction directly in the browser, using WebAssembly to process the file locally on your own computer:
- Go to the Free TAR.GZ Extractor
- Drag your
.tar.gzfile into the box, or click to select it - The contents extract instantly — browse the files and click any of them to save it to your Downloads folder
No terminal, no command syntax, no software to install. It's the same three-click process as opening a ZIP file.
Why This Matters Beyond GitHub
.tar.gz shows up more often than you might expect once you know to look for it — software source code downloads, backup exports from web apps, log file bundles, and open-source project releases all commonly use it. Now that you know what it is, you won't need to guess or search for a fix the next time it lands in your Downloads folder.
One Tool, Every Format
If you regularly download files from developer-focused sites, you'll probably run into .tar, .gz, .bz2, or .xz files eventually too. unpk.app handles all of them through the same simple drag-and-drop interface — no need to memorize which tool goes with which extension.
Next time you see .tar.gz, skip the search for terminal tutorials and just open the Free TAR.GZ Extractor instead.