Why convert FLATPAK to DEB?
People look for .flatpak to .deb because they want the app in their system package manager instead of the Flatpak sandbox. The two formats are architecturally opposite: a Flatpak is self-contained and isolated, a Debian package integrates with the host and shares system libraries, so you rebuild rather than convert.
How to convert FLATPAK to DEB
Build a .deb from the app's source OPEN-SOURCE
Get the upstream source, then package it natively with dpkg-buildpackage -us -uc after adding a debian/ directory, or use checkinstall make install to wrap a build into a .deb.
Just install from Flathub EASIEST
If you only want the app running, keep the Flatpak: run flatpak install flathub <app-id> instead of chasing a .deb.
Look for an official .deb FREE
Check the project's releases page or its apt repository; many apps that ship a Flatpak also publish a real .deb you can install with sudo apt install ./package.deb.
About these formats
A .flatpak file is a Flatpak single-file bundle: one Linux application or runtime packaged into a standalone file for direct download, sharing on removable media, or sending by email. Open…
Open .FLATPAK details →A DEB file is a software installer for Debian-based Linux systems - Ubuntu, Linux Mint, Kali, Raspberry Pi OS, and others. To use it, run sudo apt install ./package.deb in a terminal, or…
Open .DEB details →Quality & what to watch
- Extracting files from the Flatpak and stuffing them in a
.debproduces a broken package: the binaries expect the Flatpak runtime and/apppaths, not the host filesystem. - A rebuilt
.debuses system libraries, so behavior and versions can differ from the sandboxed Flatpak. - There is no
alien-style automatic converter for Flatpak the way there is between.deband.rpm.
Frequently asked questions
Can `alien` convert a flatpak to deb?
alien converts between .deb, .rpm, .tgz and .slp, but it does not handle Flatpak bundles.Why not just extract the flatpak and repackage it?
.deb built from them will not run on the host system.What is the easiest alternative?
flatpak install, or find an official .deb from the developer.