How to use 7-Zip on Windows

Guide

These notes assume a typical Windows desktop after the program is installed. Paths and labels can differ slightly by language pack.

Make a new archive from File Explorer

Select one file, several files, or an entire folder.
Right-click the selection, open the 7-Zip submenu, then choose Add to archive…
Pick the format (for example 7z or zip), set a password if needed, and adjust the compression level if you want faster runs versus smaller output.
Confirm with OK; the archive appears beside your originals unless you chose another destination.

Unpack something you downloaded

Right-click the archive file.
Use 7-Zip → Extract to “FolderName\” for a dedicated directory, or Extract here when you already stand in the right place.
If the archive is password-protected, you will be prompted during extraction.

Use the main application window

Launch 7-Zip File Manager from the Start menu. It behaves like a small two-pane browser: navigate into an archive as if it were a folder, preview contents, drag items out, or start add / extract actions from the toolbar.

7-Zip file manager with toolbar and file list — Typical layout: path bar, toolbar, and file list.

Small quality-of-life tips

For huge jobs, prefer extracting to a drive with plenty of free space; temporary files can grow large.
When sharing with people on other platforms, zip remains the most universally recognized option even if 7z is tighter.
Keep originals until you verify the archive opens on another machine if the data matters.

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