Free online DEB to 7Z converter

People convert a DEB package to 7Z when they need a compact archive for storage or sharing, or when a workflow accepts 7-Zip archives instead of Debian packages. The result is an archive container, not a replacement install format for non-Debian systems.

What the DEB format is

DEB is the software-package format used by Debian, Ubuntu, Linux Mint, and other Debian-based distributions. Users, system administrators, and package developers encounter DEB files when installing applications, inspecting repositories, or distributing Linux software.

A DEB file is an ar archive containing a version marker, a compressed control archive, and a compressed data archive. The control archive stores metadata, dependencies, and installation scripts; the data archive contains the files installed on the system. Package tools include dpkg, apt, dpkg-deb, and Debian packaging utilities.

What the 7Z format is

7Z is a general-purpose archive format associated with 7-Zip. It can store files and directories using methods such as LZMA2, supports solid compression and AES-256 encryption, and can contain several DEB files in one archive.

7Z is useful for archiving or transferring packages, but it is not a Debian package. A system cannot normally install package.7z with apt or dpkg; extract the original .deb file first.

Choose what the 7Z archive should contain

There are two different operations commonly called DEB-to-7Z conversion:

• Archive the original DEB: the 7Z file contains the unchanged DEB as one member. This preserves the installable package and is the safest choice for later installation.
• Archive the package contents: extract the DEB and compress its files into 7Z. This is suitable for inspection or editing, but the result is no longer an installable Debian package and does not retain the package structure as a unit.

Archive the original DEB with 7-Zip

On Windows, install 7-Zip from its official desktop distribution. On Debian-based Linux systems, install the package available for the release, commonly 7zip on newer releases or p7zip-full on older ones. The executable may be named 7z or 7zz.

1. Open a terminal in the directory containing the package.
2. Create the archive with 7z a package.7z package.deb. Replace both filenames with the actual names.
3. Test the result with 7z t package.7z.
4. Recover the original package with 7z x package.7z; install the extracted DEB using the normal Debian package tools.

For several packages, use 7z a packages.7z *.deb. The option -mx=9, as in 7z a -mx=9 package.7z package.deb, selects maximum compression but can take longer and often produces little additional reduction because the DEB already contains compressed members.

Use the 7-Zip graphical interface

1. Select one or more DEB files in 7-Zip File Manager or Windows Explorer.
2. Choose 7-Zip → Add to archive....
3. Set Archive format to 7z, choose the compression level, and optionally set a password.
4. Select OK, then test the resulting archive if it will be stored or transferred.

PeaZip and Linux archive managers such as Ark can provide a graphical interface, but their DEB support depends on the installed backend. If a program cannot open a DEB directly, create a 7Z archive containing the original DEB with the command-line method instead.

Archive the extracted package contents

To archive only the installed payload on Debian-based Linux, extract it with dpkg-deb -x package.deb package-directory, then create the 7Z file with 7z a package-contents.7z package-directory/. To extract package control files separately, use dpkg-deb -e package.deb control-directory.

This operation does not produce a package that apt or dpkg can install. It can also change or omit package metadata, control scripts, ownership, permissions, symbolic links, and other filesystem attributes depending on the extraction and archiving tools and the operating system.

Use 101convert.com without installing software

You can upload the DEB file to 101convert.com, choose 7Z as the output format, and download the resulting archive without installing desktop software. Check whether the service preserves the original DEB as a single archive member or repacks its contents; use desktop tools for confidential packages or when byte-for-byte preservation is required.

Compatibility and compression limits

Archiving the original DEB preserves its bytes, including its dependency metadata, control scripts, and compressed payload. The outer 7Z archive may be password-protected, but that protection applies to the 7Z container; after extraction, the DEB itself has no additional encryption.

7Z readers are available on major desktop and Linux platforms, but a target device may support only ZIP or another archive type. A 7Z archive is lossless, yet maximum compression does not guarantee a smaller file because DEB payload and control archives are commonly compressed already.